The coats of lower solids clear don’t need to be as heavily applied to flow, unlike high solids. This makes them a favorite for many home enthusiasts. Lower solid clears are thinner, so they flow smoothly. If the paint doesn’t flow, you’re left with a bumpy, orange-peel surface. The painter has to lay the clear on heavy enough so the thicker clear flows but doesn’t run. The thicker the paint, the harder it is for it to flow. It also means higher solids are trickier to spray. Eastwood’s Urethane Premium Show Clear is another high-solids clear that is durable and has excellent gloss and depth. It’s a favorite for many professional painters. DCX61 is the most commonly used catalyst for this clear. PPG’s Deltron DCU2021 is a very painter friendly high-solids clear. The solid content refers to the amount of solids that remain as compared to the amount of solvents. Solids are what’s left behind after the clearcoat has flashed (gassed) off. High-solids clears are more expensive and are most often used on show cars and high-end restorations. Most vehicles you see on the road are painted with universal or lower solids clear. Both are great products and produce hard, glassy finishes that last for years. There are two main kinds of urethane clearcoats: high solids and universal (lower solids) clear. If you use a basecoat clear for pearl or candy layers of a paintjob, you should apply several coats of urethane clear over it. A basecoat clear is always topcoated with clear urethane. Also, make sure you use the hardener designed to go with your basecoat clear.”īasecoat clear is not meant to be used as a topcoat clear. Once you add hardener to any basecoat, it gives it a much shorter pot life. “Catalyzing basecoats and basecoat clears will always give the paintjob more strength and durability,” Ron explains. We asked Ron Peyton, a trainer at PPG about this. ![]() Hardener may be added to some brands of clear basecoat, but that doesn’t mean it becomes urethane clear. You might have heard about adding a hardener to basecoats or basecoat clears. The bottom line is, whatever clear you use, do your research and follow the product sheet for that particular product. Another company might have a product with solvents that aren’t as strong, which makes it easier to work with. One company might want its intercoat or basecoat clear to have superior adhesion qualities, so the solvents in that product might be stronger than most. Not all basecoat clears are the same, as different companies produce different products. Sometimes, cooler or hotter temperature reducer will lead to better results. ![]() The reducer’s active-temperature range choice can also play a role. The more coats of basecoat clear applied, the longer it will take to dry. ![]() But restoration and custom paint shops will often lay down at least four to five layers. And, if urethane clearcoat is applied over that heavy basecoat, It gets trapped under the urethane and lifts it, causing a bubble or lifted area.Ĭollision repair shops typically apply two to three coats of basecoat clear. In the case of heavily applied or too many coats of any basecoat, it can take days for the solvent to gas out. Have you ever seen paint bubble up? This is usually caused by trapped solvents. Be certain your basecoat is dry before topcoating with urethane. Paint bubbles can happen when unreleased solvents in a basecoat are trapped under urethane clear.
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