What is the purpose of urethane primer?
Mar-Hyde Ultimate 2K Urethane Primer Surfacer is formulated to provide a fast-drying, high-build film that has excellent adhesion, easy sanding properties and excellent color holdout. It is designed to be used on properly prepared steel, aluminum, iron, fiberglass and previously painted surfaces.
Do you have to sand urethane primer?
Wet sanding 2K Urethane primer is best done with 400 to 600 grit wet/dry paper on a Durablock. Under most circumstances you will not need to DA sand over your work after wet sanding because wet sanding creates much finer scratches. You would sand the same way as 2K Urethane Primer—400 to 600 grit wet.
Is urethane primer the same as epoxy primer?
Since urethane is only a primer surfacer, you’ll also need to apply a sealer before you paint. Again, a coat of epoxy primer over the top will serve the purpose. Some restorers believe filler primer is little more than liquid body filler. In most cases, the filler primer or high-build primer is also a urethane product.
Is 2K Urethane primer a sealer?
This 2K Primer-Sealer is a two-component acrylic urethane primer sealer formulated to be applied as a low build nonsanding sealer. Our 2K Sealer offers excellent coverage with minimal coats, fast dry, excellent adhesion, and superior color holdout without shrinking.
Can you use lacquer primer with urethane paint?
This can cause serious adhesion problems which can result in paint delamination problems (the paint can come off in sheets). So the bottom line answer to your question is – yes you can spray urethane primer over lacquer primer but you’re playing a game of russian roulette with paint adhesion in the potential loser.
Is automotive urethane primer waterproof?
Will rain effect primer? 2K high fill primer is not waterproof or even water resistant. It is porous like a sponge and will absorb moisture, causing the the metal to rust underneath.
Can you Bondo over urethane primer?
As long as the filler is fine enough to get into the scratches in the primer or paint and the primer or paint that you’re putting it on is a good quality urethane that is well attached to the surface then you’re probably ok.
Can you use urethane paint over epoxy primer?
bs35j, The answer to your question is “yes” you can spray urethane paint directly over the epoxy primer. In fact that method is preferable to spraying urethane over 2-K primer surfacer. Thats with the caveat that you spray the urethane over the epoxy within the epoxies recoat time window.
What is the difference between automotive primer and sealer?
It creates a bond between properly sanded primer and the basecoat paint. Sealers help the paint to stick, and can reduce the chance of having the topcoat paint run. Sealer fills those light sand scratches and can diminish very slight imperfections.
What comes first primer or sealer?
Sealer paint can be used as a substitute for a primer, or before the primer is applied to the base surface. The main purpose of sealer paint is to provide good adhesion between the substrate and the new paint or the primer.
Can urethane paint go over lacquer?
Polyurethane will not bond or grip well with the lacquer and will peel off over time with general use. Instead, use an alkyd varnish. Make sure the alkyd varnish has a finish that matches the lacquer finish—a gloss finish is a safe bet.