{"id":1957,"date":"2025-11-11T15:28:43","date_gmt":"2025-11-11T20:28:43","guid":{"rendered":"https:\/\/www.bottompaintstore.com\/blog\/?p=1957"},"modified":"2026-05-12T12:00:51","modified_gmt":"2026-05-12T16:00:51","slug":"gelcoat-did-not-cure-what-caused-it-and-whats-next","status":"publish","type":"post","link":"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/","title":{"rendered":"Gelcoat Did Not Cure &#8211; What Caused It and What&#8217;s Next?"},"content":{"rendered":"<p class=\"post-updated\"><strong>Last Updated: January 19, 2026<\/strong><!--?php echo get_the_modified_date('F j, Y'); ?--><\/p>\r\n<!-- Quick Recommendation Box: Gelcoat Did Not Cure -->\r\n<div class=\"bps-quick-reco\" style=\"border: 1px solid #e5e5e5; border-left: 6px solid #0a6fb5; background: #f8fbff; padding: 16px 18px; margin: 14px 0 22px; border-radius: 8px;\">\r\n<p style=\"margin: 0 0 8px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: #0a6fb5; font-weight: bold;\">Quick Recommendation<\/p>\r\n<h2 style=\"margin: 0 0 10px; font-size: 20px; line-height: 1.25;\">Gelcoat Did Not Cure: What to Do First<\/h2>\r\n<ul style=\"margin: 0; padding-left: 18px; line-height: 1.6;\">\r\n<li><strong>Check the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> ratio immediately:<\/strong> Incomplete or incorrect <strong><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> mixing<\/strong> is the most common cause of uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>.<\/li>\r\n<li><strong>Confirm curing conditions:<\/strong> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> requires proper <strong>temperature, humidity control, and oxygen exclusion<\/strong> to fully cure.<\/li>\r\n<li><strong>Do not apply more <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> yet:<\/strong> Uncured material must be <strong>removed or sealed correctly<\/strong> before recoating.<\/li>\r\n<li><strong>Bottom line:<\/strong> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> that doesn\u2019t cure is usually a <strong>process issue\u2014not a product failure<\/strong>\u2014and can often be corrected with the right next steps.<\/li>\r\n<\/ul>\r\n<p style=\"margin: 12px 0 0; color: #555; line-height: 1.5;\"><strong>Tip:<\/strong> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> exposed to air will remain tacky unless a <strong>wax additive or PVA<\/strong> is used on the final coat.<\/p>\r\n<\/div>\r\n<div class=\"content-section gelcoat-cure-guide\">\r\n<h2>Quick Answer: Why Did My Gelcoat Not Cure?<\/h2>\r\n<p><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> usually does not cure because the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> ratio was incorrect, the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> was not mixed thoroughly, the temperature was too cold, the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> was applied too thick or too thin, or the surface was contaminated with wax, solvent, moisture, oil, or residue. In some cases, the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> may also stay tacky because it was unwaxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> exposed to air.<\/p>\r\n<p>If your <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is still soft, gummy, sticky, or wet after the expected cure time, do not sand it aggressively right away. First, determine whether the problem is surface tackiness, slow curing, incorrect <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> mixing, or a failed cure. The right fix depends on how uncured the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is and what caused the problem.<\/p>\r\n<h2>Gelcoat Not Curing: Most Common Causes and Fixes<\/h2>\r\n<table>\r\n<thead>\r\n<tr>\r\n<th>Problem<\/th>\r\n<th>Likely Cause<\/th>\r\n<th>What to Do Next<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> is sticky on the surface but firm underneath<\/td>\r\n<td>Unwaxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> exposed to air<\/td>\r\n<td>Apply PVA, wax additive, or another sealing method recommended for the product so the surface can fully cure.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> is soft or gummy throughout<\/td>\r\n<td>Too little <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> or poor mixing<\/td>\r\n<td>Allow more time if conditions are cool, but if it remains soft, the uncured material may need to be removed and reapplied.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> cures unevenly<\/td>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Catalyst<\/a> was not mixed thoroughly<\/td>\r\n<td>Remove uncured or weak areas, sand the surface once stable, and reapply properly mixed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> takes much longer than expected to cure<\/td>\r\n<td>Low temperature, high humidity, or low <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> amount<\/td>\r\n<td>Move the project into a warmer, controlled area if possible and allow additional cure time before deciding it has failed.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> wrinkles, cracks, or overheats<\/td>\r\n<td>Too much <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> or <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> applied too thick<\/td>\r\n<td>Let it fully cure if possible, then sand or grind out damaged areas and reapply in proper thickness.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> will not bond properly<\/td>\r\n<td>Surface contamination or poor sanding<\/td>\r\n<td>Remove the failed coating, clean thoroughly, sand properly, and reapply to a clean, dry surface.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> remains wet and never hardens<\/td>\r\n<td>No <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>, expired <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>, wrong product mix, or severe measurement error<\/td>\r\n<td>Remove the uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> completely, clean the area, and start over with fresh materials.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h2>What to Check Before You Remove the Gelcoat<\/h2>\r\n<p>Before removing uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>, check the product instructions, <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> ratio, working temperature, cure time, and whether the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> was waxed or unwaxed. A surface that is slightly tacky may not be a failed cure if unwaxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> was used without PVA or wax additive.<\/p>\r\n<p>If the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is soft all the way through, transfers onto your glove, or can be scraped off easily after the normal cure window, the cure may have failed. In that case, it is usually better to remove the uncured material than to try to cover it with more <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>, primer, or paint.<\/p>\r\n<h2>Basic Steps to Fix Gelcoat That Did Not Cure<\/h2>\r\n<table>\r\n<thead>\r\n<tr>\r\n<th>Step<\/th>\r\n<th>What to Do<\/th>\r\n<th>Why It Matters<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td>1. Identify the type of uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a><\/td>\r\n<td>Check whether the surface is only tacky or whether the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is soft throughout.<\/td>\r\n<td>Surface tackiness and total cure failure require different fixes.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>2. Check the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> type<\/td>\r\n<td>Confirm whether you used waxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>, unwaxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>, or <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> with a separate surfacing agent.<\/td>\r\n<td>Unwaxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> often needs air exclusion to cure tack-free.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>3. Review the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> ratio<\/td>\r\n<td>Compare the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> amount used with the manufacturer\u2019s recommended ratio.<\/td>\r\n<td>Too little <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> can prevent curing, while too much can cause cracking, overheating, or poor performance.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>4. Consider temperature and cure time<\/td>\r\n<td>Check whether the surface, air, and materials were warm enough during application and curing.<\/td>\r\n<td>Cold conditions can slow or interfere with the curing process.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>5. Remove failed material if needed<\/td>\r\n<td>Scrape, wipe, or sand away uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> depending on how soft it is.<\/td>\r\n<td>New <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> should not be applied over a soft, unstable, or contaminated layer.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>6. Clean and prepare the surface again<\/td>\r\n<td>Remove residue, solvent, wax, oil, moisture, and dust before recoating.<\/td>\r\n<td>Proper surface prep helps the new <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> bond and cure correctly.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>7. Reapply with fresh <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> and <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a><\/td>\r\n<td>Measure carefully, mix thoroughly, and follow product directions for thickness, temperature, and cure time.<\/td>\r\n<td>Accurate mixing and application reduce the chance of another failed cure.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h2>Common Questions About Gelcoat That Did Not Cure<\/h2>\r\n<h3>Will uncured gelcoat eventually harden?<\/h3>\r\n<p>Sometimes <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> will eventually harden if the problem is cool temperature or slightly slow curing. However, if the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> has too little <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>, no <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>, poor mixing, contamination, or expired materials, it may never cure properly and may need to be removed.<\/p>\r\n<h3>Why is my gelcoat still tacky?<\/h3>\r\n<p><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> may stay tacky if it is unwaxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> and the surface was exposed to air while curing. It can also remain tacky because of incorrect <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> ratio, poor mixing, cold temperatures, or contamination. The key is determining whether only the surface is tacky or the entire layer is soft.<\/p>\r\n<h3>Can I apply more gelcoat over uncured gelcoat?<\/h3>\r\n<p>In most cases, you should not apply fresh <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> over soft or uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>. The new layer may not bond correctly, and the failed layer underneath can continue to cause problems. It is usually better to remove uncured material, clean the area, sand properly, and reapply.<\/p>\r\n<h3>How do I remove gelcoat that did not cure?<\/h3>\r\n<p>Soft or gummy <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> can often be scraped off carefully before final cleaning. Remaining residue may need to be removed with the cleaner or solvent recommended by the product manufacturer, followed by sanding and surface preparation before recoating.<\/p>\r\n<h3>What happens if I use too much MEKP catalyst?<\/h3>\r\n<p>Too much <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> can cause <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> to cure too quickly, overheat, crack, discolor, shrink, or become brittle. More <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> is not always better. Always follow the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> manufacturer\u2019s recommended <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> range for the temperature and application conditions.<\/p>\r\n<h3>What happens if I do not use enough catalyst?<\/h3>\r\n<p>Too little <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> can cause <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> to cure slowly, remain soft, or fail to cure completely. If the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> remains gummy or wet after the expected cure time, the uncured material may need to be removed and reapplied with the correct <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> ratio.<\/p>\r\n<h3>Does temperature affect gelcoat curing?<\/h3>\r\n<p>Yes, temperature can strongly affect <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> curing. Cold surfaces, cold air, and cold materials can slow down or interfere with the cure. <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> products usually have a recommended temperature range, and staying within that range helps the coating cure properly.<\/p>\r\n<h3>Do I need wax additive in gelcoat?<\/h3>\r\n<p>Wax additive is often used when <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is intended as a final coat. It rises to the surface and helps block air so the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> can cure tack-free. If you are using unwaxed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>, you may need wax additive, PVA, or another manufacturer-approved air-blocking method.<\/p>\r\n<h3>Can I sand gelcoat that is still tacky?<\/h3>\r\n<p><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> that is still sticky or gummy is difficult to sand and can clog sandpaper quickly. If the surface is only slightly tacky because it needs air exclusion, address that first. If the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is soft throughout, it may need to be removed before sanding and recoating.<\/p>\r\n<h2>Recommended Gelcoat Repair Supplies<\/h2>\r\n<p>Bottom Paint Store carries <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> repair products, <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>, wax additive, PVA, fiberglass repair materials, sandpaper, cleaners, fillers, fairing compounds, and related marine finishing supplies. The right product depends on whether you are fixing surface tackiness, removing a failed cure, or reapplying <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> after a repair.<\/p>\r\n<\/div>\r\n<div class=\"content-section\">\r\n<h2>Gelcoat Not Curing? Causes, Fixes, and Prevention Tips<\/h2>\r\n<p>Applying <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> can feel intimidating, even for experienced do-it-yourselfers. Unlike paint, <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> involves a precise chemical reaction that requires careful measuring and preparation. When it stays tacky or won\u2019t harden at all, it can be one of the most frustrating issues in fiberglass repair. Don\u2019t worry\u2014uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is a common problem with clear, fixable causes.<\/p>\r\n<p>This guide explains the most common reasons why <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> fails to cure, how to fix it, and how to prevent it from happening again.<\/p>\r\n<h3>Common Reasons Gelcoat Does Not Cure<\/h3>\r\n<h4>1. Incorrect Surface Preparation<\/h4>\r\n<p><a href=\"https:\/\/www.bottompaintstore.com\/fiberglass-and-gel-coat-repair-gelcoat-c-13581_13586.html\">Gelcoat<\/a> adheres only to fiberglass, cured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>, or <a href=\"https:\/\/www.bottompaintstore.com\/Polyester-Resins\">polyester resin<\/a>. It will not stick to paint, epoxy, or any protective coating. Always remove existing paint completely before applying new <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>.<\/p>\r\n<ul>\r\n<li style=\"list-style-type: none;\">\r\n<ul><!-- \/wp:post-content -->\r\n\r\n<!-- wp:image {\"align\":\"right\",\"id\":3095,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} --><\/ul>\r\n<\/li>\r\n<\/ul>\r\n<figure class=\"wp-block-image alignright size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" class=\"wp-image-3095 alignright\" src=\"https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/EXT-Gelcoat-150x150-1.jpg\" alt=\"\" \/><\/figure>\r\n<ul>\r\n<li><strong>Sanding:<\/strong> Use <em>40\u201380 grit<\/em> sandpaper for heavy removal or shaping and <em>220\u2013330 grit<\/em> for feathering edges of the repair. A rubber sanding block helps maintain flat surfaces.<\/li>\r\n<li><strong>Cleaning:<\/strong> Wipe the surface with <em>acetone<\/em> to remove grease, wax, or dust. The surface must be completely clean and dry before applying <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>.<\/li>\r\n<li><strong>Recommended Tools:<\/strong> 3M abrasives and clean lint-free cloths provide the best bond.<\/li>\r\n<\/ul>\r\n<p>Skipping or rushing surface prep is one of the most common reasons <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> remains tacky or peels later.<\/p>\r\n<h4>2. Incorrect Catalyst Ratio (MEKP)<\/h4>\r\n<p><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> requires a precise mix of <a href=\"https:\/\/www.bottompaintstore.com\/fiberglass-and-gel-coat-repair-gel-coat-products-and-additives-c-13581_13582.html\"><strong>MEKP catalyst<\/strong><\/a> to harden correctly. Most products need 1.5%\u20132.0% by volume, with 1.8% @ 77\u00b0F being ideal (about 12 drops per ounce of <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>).<\/p>\r\n<ul>\r\n<li><strong>Too little <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>:<\/strong> The <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> won\u2019t \u201ckick,\u201d leaving a sticky, soft surface.<\/li>\r\n<li><strong>Too much <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>:<\/strong> The mixture can overheat and harden in the can or while applying.<\/li>\r\n<\/ul>\r\n<p><em>Always mix small batches\u2014no more than one pint at a time\u2014and stir thoroughly.<\/em><\/p>\r\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"5\">\r\n<tbody>\r\n<tr>\r\n<th>Temperature (\u00b0F)<\/th>\r\n<th>Recommended <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Catalyst<\/a> %<\/th>\r\n<th>Notes<\/th>\r\n<\/tr>\r\n<tr>\r\n<td>60\u201365\u00b0F<\/td>\r\n<td>2.0%<\/td>\r\n<td>Cooler temps require more <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>70\u201380\u00b0F<\/td>\r\n<td>1.8%<\/td>\r\n<td>Ideal range for most applications<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>85\u201390\u00b0F<\/td>\r\n<td>1.5%<\/td>\r\n<td>Reduce <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> in warm weather<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<div class=\"content-section gelcoat-cure-checklist\">\r\n<h2>Gelcoat Recoat Checklist<\/h2>\r\n<ul>\r\n<li>Confirm whether the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> is waxed or unwaxed<\/li>\r\n<li>Use fresh <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> and fresh <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a><\/li>\r\n<li>Measure <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> carefully according to the product directions<\/li>\r\n<li>Mix thoroughly, including the sides and bottom of the mixing container<\/li>\r\n<li>Apply within the recommended temperature range<\/li>\r\n<li>Make sure the surface is clean, dry, sanded, and free of wax or oil<\/li>\r\n<li>Use PVA or wax additive when required for a tack-free final cure<\/li>\r\n<li>Allow the full cure time before sanding, polishing, painting, or launching<\/li>\r\n<\/ul>\r\n<\/div>\r\n<p><strong>Pro Tip:<\/strong> Keep <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> at room temperature before use. For the most consistent cure, pour the mixed <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> into a clean second container before brushing or spraying. This ensures no uncatalyzed material remains on the sides of the pot.<\/p>\r\n<h4>3. Missing Wax Additive (Surfacing Agent)<\/h4>\r\n<p>Oxygen in the air prevents <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> from curing tack-free. The final coat must include a <strong>wax additive sanding aid<\/strong> to seal out oxygen and allow full cure. Use <strong>1 oz wax per quart of <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a><\/strong>. The first coat usually doesn\u2019t need wax, but the last coat does.<\/p>\r\n<p>All gelcoats from the <a href=\"https:\/\/www.bottompaintstore.com\/\">Bottom Paint Store<\/a> include both <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKP<\/a> <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> and wax additive, but extra additives are available if needed.<\/p>\r\n<h4>4. Too Thin of a Coat<\/h4>\r\n<p><a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> must be applied thick enough to generate heat for the curing reaction. The proper <strong>wet film thickness is about 25 mils<\/strong>, resulting in a cured thickness of 18\u201322 mils.<\/p>\r\n<p>Use a <strong>wet film thickness gauge<\/strong> to confirm coverage. Press the edge of the gauge into the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> until it contacts the surface below. The highest numbered tooth with <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> on it and the next higher tooth without <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> indicate the wet film thickness.<\/p>\r\n<p><strong>Example:<\/strong> If the 15-<a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">mil<\/a> tooth is coated and the 20-<a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">mil<\/a> tooth is clean, the film thickness is between 15 and 20 mils\u2014too thin for proper curing.<\/p>\r\n<h3>What to Do If Your Gelcoat Didn\u2019t Cure<\/h3>\r\n<h4>Can I Apply More Gelcoat Over It?<\/h4>\r\n<p>No. Adding new <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> over an uncured layer will not make the first coat cure. The underlying <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> must be removed and reapplied.<\/p>\r\n<h4>Will It Cure With More Time?<\/h4>\r\n<p>Sometimes. If the mixture or temperature was slightly off, it may cure after a few days. However, if it\u2019s still soft or tacky after 72 hours, it needs to be removed.<\/p>\r\n<h4>How to Remove Uncured Gelcoat<\/h4>\r\n<ul>\r\n<li>Wipe the surface with <strong>acetone<\/strong> to soften the uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>.<\/li>\r\n<li>Use a <strong>plastic putty knife<\/strong> to scrape off the material carefully.<\/li>\r\n<li>Re-sand the area and clean thoroughly before reapplying <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> with the correct <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> ratio and wax additive.<\/li>\r\n<\/ul>\r\n<h3>How to Prevent Gelcoat Cure Problems<\/h3>\r\n<ul>\r\n<li>Store and mix <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> at <strong>room temperature (70\u201380\u00b0F)<\/strong>.<\/li>\r\n<li>Measure <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> with <strong>graduated mixing cups<\/strong> for accuracy.<\/li>\r\n<li>Use <strong>wax additive<\/strong> in your final coat to achieve a hard, sandable surface.<\/li>\r\n<li>Apply multiple thin coats instead of one heavy coat.<\/li>\r\n<li>Verify <strong>wet film thickness (25 mils)<\/strong> with a gauge.<\/li>\r\n<\/ul>\r\n<p><a href=\"https:\/\/www.bottompaintstore.com\/gelcoat-repair-kits.html\">Shop Gelcoat Repair Kits<\/a> \u2022 <a href=\"https:\/\/www.bottompaintstore.com\/wax-additive-sanding-aid.html\">Buy Wax Additive Sanding Aid<\/a><\/p>\r\n<h3>Frequently Asked Questions<\/h3>\r\n<h4>Can I Apply Gelcoat Over Epoxy?<\/h4>\r\n<p>No. <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">Gelcoat<\/a> will not adhere directly to epoxy. You must apply a compatible barrier coat or primer first.<\/p>\r\n<h4>Why Is My Gelcoat Sticky After 24 Hours?<\/h4>\r\n<p>It\u2019s usually caused by too little <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> or forgetting the wax additive in the final coat.<\/p>\r\n<h4>How Long Should Gelcoat Take to Cure?<\/h4>\r\n<p>At 77\u00b0F, most gelcoats will be tack-free in 2\u20134 hours and fully cured within 24 hours.<\/p>\r\n<\/div>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:paragraph -->\r\n<p><strong>Pro Tip<\/strong><br \/><strong>1 mL = 1 cc<\/strong> If using wood mixing stick, place stick in resin before adding <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a> so the wood doesn&#8217;t absorb <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">catalyst<\/a>. Only catalyze slightly more than needed. Resin that cures still in the mixing pot is unusable.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:image {\"align\":\"left\",\"id\":1587,\"width\":316,\"height\":145} -->\r\n<figure class=\"wp-block-image alignleft is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1587\" src=\"https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/MEKP.jpg\" alt=\"MEPk Levels\" width=\"316\" height=\"145\" srcset=\"https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/MEKP.jpg 550w, https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/MEKP-300x138.jpg 300w, https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/MEKP-22x10.jpg 22w\" sizes=\"auto, (max-width: 316px) 100vw, 316px\" \/>\r\n<figcaption>Note the size and temperature variables.<\/figcaption>\r\n<\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:image {\"align\":\"left\",\"id\":1964,\"width\":219,\"height\":145} -->\r\n<figure class=\"wp-block-image alignleft is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1964\" src=\"https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/Catalyst.png\" alt=\"\" width=\"219\" height=\"145\" srcset=\"https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/Catalyst.png 375w, https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/Catalyst-300x198.png 300w\" sizes=\"auto, (max-width: 219px) 100vw, 219px\" \/>\r\n<figcaption>For Darker Colors &#8211; use 2% <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">MEKp<\/a><\/figcaption>\r\n<\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:heading \/-->\r\n\r\n<!-- wp:image {\"align\":\"left\",\"id\":1976,\"width\":110,\"height\":119} -->\r\n<figure class=\"wp-block-image alignleft is-resized\"><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:paragraph \/-->\r\n\r\n<!-- wp:image {\"align\":\"right\",\"id\":2164,\"sizeSlug\":\"large\"} -->\r\n<figure class=\"wp-block-image alignright size-large\"><\/figure>\r\n<!-- \/wp:image -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>&nbsp;<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading -->\r\n<h2 id=\"mce_17\">\u00a0<\/h2>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n<p><strong>Can I apply more <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> over uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>?<\/strong> No. Applying more <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> will not help the first layer cure. Most likely it will need to be removed and reapplied.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n<p><strong>What can I try to get the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> to cure? <\/strong>Allow more time. If something wasn&#8217;t exactly right, the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> may just take a few days to harden. If it&#8217;s not rock-solid in a few days, though, you may have to scrape it off and reapply it.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n<p><strong>How can I remove the uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>?<\/strong> Acetone on a rag can be used to break down the <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a>. Use a plastic putty knife to scrape the uncured <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/gelcoat-did-not-cure-what-caused-it-and-whats-next\/\">gelcoat<\/a> away.<\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:heading {\"level\":4} -->\r\n<h4>Read More:<\/h4>\r\n<!-- \/wp:heading -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>Click this link to read <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/how-to-apply-gelcoat\/\">How to Apply Gelcoat<\/a><\/p>\r\n<!-- \/wp:paragraph -->\r\n\r\n<!-- wp:paragraph -->\r\n<p>Click this link to read <a href=\"https:\/\/www.bottompaintstore.com\/blog\/gelcoat\/clear-coat-bass-boat\/\">Clear Coat My Bass Boat<\/a><\/p>\r\n<!-- \/wp:paragraph --><script type=\"text\/javascript\" charset=\"utf-8\" src=\"http:\/\/w.sharethis.com\/widget\/?wp=6.9.7\"><\/script>","protected":false},"excerpt":{"rendered":"<p>Last Updated: January 19, 2026 Quick Recommendation Gelcoat Did Not Cure: What to Do First Check the catalyst ratio immediately: Incomplete or incorrect MEKP mixing is the most common cause of uncured gelcoat. Confirm curing conditions: Gelcoat requires proper temperature, humidity control, and oxygen exclusion to fully cure. Do not apply more gelcoat yet: Uncured [&hellip;]<\/p>\n","protected":false},"author":817,"featured_media":3979,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[428,427,426,425],"class_list":["post-1957","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gelcoat","tag-cause-of-gelcoat-not-curing","tag-gelccoat-not-hardening","tag-gelcoat-did-not-cure","tag-gelcoat-not-curing"],"jetpack_featured_media_url":"https:\/\/www.bottompaintstore.com\/blog\/wp-content\/uploads\/10-Things-You-Must-Do-To-Get-Good-Results-From-Gelcoat-for-Your-Boat.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/posts\/1957","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/users\/817"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/comments?post=1957"}],"version-history":[{"count":29,"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/posts\/1957\/revisions"}],"predecessor-version":[{"id":4221,"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/posts\/1957\/revisions\/4221"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/media\/3979"}],"wp:attachment":[{"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/media?parent=1957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/categories?post=1957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bottompaintstore.com\/blog\/wp-json\/wp\/v2\/tags?post=1957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}