{"product_id":"general-finishes-exterior-450-topcoat","title":"Exterior 450 Water-Based Topcoat","description":"\u003cp\u003eA water-based exterior clear finish for suitable outdoor wood projects.\u003c\/p\u003e\u003csection class=\"tl-gf-application\"\u003e\u003ch3\u003eApplication guide\u003c\/h3\u003e\n\u003cp\u003eDrying times assume about 70°F and 50% humidity. Allow longer in cool or humid conditions, and follow the current can label.\u003c\/p\u003e\n\u003cdetails open\u003e\u003csummary\u003ePrepare \u0026amp; apply\u003c\/summary\u003e\u003cp\u003ePrepare the surface and apply three coats. Spray application is recommended in the current technical sheet; use a brush or roller only as permitted by your can’s instructions. Lightly sand between dry clear coats with 220–320 grit. Do not sand fresh stain or use steel wool.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDrying \u0026amp; next coat\u003c\/summary\u003e\u003cp\u003eAllow at least 2 hours between coats and 5 days before exposure to outdoor weather. Full cure takes about 21 days. Allow longer in cool or humid conditions.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCompatibility \u0026amp; important tips\u003c\/summary\u003e\u003cp\u003eUse with Exterior 450 Stain or a manufacturer-approved system. Not for decks or tabletops directly exposed to sun and rain. UV protection helps preserve the finish but does not stop wood from changing color. Avoid clear coating white or light paint.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eManufacturer instructions \u0026amp; documents\u003c\/summary\u003e\u003cp\u003e\u003ca href=\"https:\/\/generalfinishes.com\/wood-finishes-professional\/exterior-topcoats-stains-oils\/exterior-450-water-based-topcoat\" target=\"_blank\" rel=\"noopener\"\u003eFull manufacturer instructions\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/generalfinishes.com\/sites\/default\/files\/documents\/files\/2025-07\/TDS-Exterior-450-Topcoat-General-Finishes-2025-07-16.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTechnical data sheet (PDF)\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/generalfinishes.com\/safety\" target=\"_blank\" rel=\"noopener\"\u003eSafety data sheets — choose your product and sheen\u003c\/a\u003e\u003c\/p\u003e\u003c\/details\u003e\u003cp\u003eNeed help choosing your system? \u003ca href=\"\/pages\/contact\"\u003eAsk our Malden team\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","brand":"General Finishes","offers":[{"title":"Flat \/ Gallon","offer_id":67806631067890,"sku":"B093-01","price":115.99,"currency_code":"USD","in_stock":true},{"title":"Flat \/ Quart","offer_id":67806631100658,"sku":"B093.4","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Satin \/ Gallon","offer_id":67806631133426,"sku":"B099-01","price":115.99,"currency_code":"USD","in_stock":true},{"title":"Satin \/ Quart","offer_id":67806631166194,"sku":"B099.4","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Semi-Gloss \/ Gallon","offer_id":67806631198962,"sku":"B681-01","price":115.99,"currency_code":"USD","in_stock":true},{"title":"Gloss \/ Quart","offer_id":67806631231730,"sku":"B682.4","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Semi-Gloss \/ Quart","offer_id":67806631264498,"sku":"B691.4","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/6638\/2322\/files\/606016107698_c7680842-b842-4506-a660-7fc6ee848cce.jpg?v=1792501854","url":"https:\/\/www.townlinepaint.com\/products\/general-finishes-exterior-450-topcoat","provider":"Town Line Paint","version":"1.0","type":"link"}