{"product_id":"duratec-sunshield-clear-polyester-topcoat","title":"Duratec SunShield Clear Polyester Topcoat 904-061 with MEKP","description":"\u003cp\u003eDuratec SunShield (904-061) is a clear polyester topcoat that resists yellowing in sunlight, so exterior carbon fiber and fiberglass parts can be clear coated without a sun-blocking urethane over the top. It is easy to sand and polishes to a wet-look gloss.\u003c\/p\u003e\n\u003cp\u003eUse it three ways. Spray it over a finished part as the clear coat, spray it into the mold first and laminate behind it, or spray it wet on wet over fresh unwaxed polyester gelcoat as a gloss, UV-protective layer that lets the gelcoat cure with no wax or PVA. It is pre-promoted and air cures with no wax. Typical jobs are exterior carbon fiber parts, exterior fiberglass parts, marine work above the waterline and outdoor wood furniture.\u003c\/p\u003e\n\u003cp\u003eCatalyze at 2% MEKP by weight and mix only what you will use in about 12 minutes. Spray with an HVLP gun through a 1.8 to 2.2 mm tip at 34 to 40 psi. Start with a light dust coat, wait two minutes, then build 4 to 5 mil per coat. Twelve mil gives a good finish with UV protection, and up to 22 mil can go on if the part needs heavy sanding afterward.\u003c\/p\u003e\n\u003cp\u003eOver a cured epoxy laminate, wash the surface with clean water and a scrub pad before and after sanding, and sand with 180 grit for tooth. In the mold, use a wax release, and let the SunShield reach tack free before an epoxy layup. Polyester and vinyl ester can go on while it still has some tack. Test the bond with your own epoxy first.\u003c\/p\u003e\n\u003cp\u003eBoth sizes ship with MEKP catalyst. The shop and the part need to be at 64 F or warmer.\u003c\/p\u003e","brand":"Duratec","offers":[{"title":"Quart with Catalyst","offer_id":68005547671854,"sku":"DURA-SS061Q","price":84.95,"currency_code":"USD","in_stock":true},{"title":"Gallon with Catalyst","offer_id":68005547704622,"sku":"DURA-SS061G","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/4071\/2494\/files\/duratec-904-061-sunshield-clear-polyester-topcoat-gallon-can.jpg?v=1794447118","url":"https:\/\/boatsuppliers.com\/products\/duratec-sunshield-clear-polyester-topcoat","provider":"Boat Suppliers","version":"1.0","type":"link"}