How Thick Can Exterior Polyurethane Be Applied?


To protect your surface, apply at least two coats of polyurethane. For surfaces that will see occasional and hard wear, such as the floor should have a minimum of three layers. Choosing to apply between 2-3 layers of polyurethane formula on your surface depends entirely on the use of your structure.

Triple Thick Polyurethane


Don’t use wood finishes from a spray can!

Frequently Asked Questions

What happens if you apply polyurethane too thick?

A: If you applied the finish beyond what the spread rate recommends (generally 500 sq. feet per gallon) it means it will take longer to cure or fully harden. I don't think I would start over just for this. Related Q: I put oil poly on a stained wood floor and the poly kinda puddled up in places.

Can you apply polyurethane thick?

Apply using a high quality synthetic bristle brush. Apply in the direction of the wood grain in one, thick smooth uniform coat. Gloss Triple Thick Polyurethane Spray (6-Pack) is 3X thicker than traditional polyurethane. ... Apply polyurethane using a bristle or foam brush about 2″ wide.

How thick should a polyurethane coat be?

0:321:31How to Video: How to Apply Varathane Triple Thick PolyurethaneYouTubeStart of suggested clipEnd of suggested clipApply triple thick directly over fully cured stain or paint using a high quality synthetic bristleMoreApply triple thick directly over fully cured stain or paint using a high quality synthetic bristle brush apply in the direction of the wood grain in one thick smooth uniform coat.

How to apply polyurethane on a flat surface?

1 Brush flat surfaces with a thin coat using a bristle brush . 2 Wipe contoured surfaces with a clean cloth, going with the grain. Brushing a rounded, contoured or vertical surface is more likely to create drips. 3 Spray less accessible areas with aerosol polyurethane. Hold the can 8-12 inches from the surface.

How many coats of polyurethane should I put on my floor?

Repeat these steps until the desired level of protection is achieved. For protection, two coats are the minimum, but floors and anything else that will see hard wear or occasional moisture should get at least three coats. Each coat also makes the finish a bit smoother.

Do you have to sand between coats of polyurethane?

If applying in this manner, you may not have to sand between coats as you do with oil-based poly; check the manufacturer's recommendations. Plan on at least three coats of water-based poly on lightly used projects and at least four coats on floors and any pieces that need maximum protection.

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