If there are stubborn nibs that stand up to the pads grab 280 grit and be more aggressive.
How to sand between coats of polyurethane on floors.
Between each coat the polyurethane must be sanded with a light grit sandpaper.
Lightly sand with pads and paper.
Sucks to be you.
If applying in this manner you may not have to sand between coats as you do with oil based poly.
And now you ll have to sand the entire floor with 220 grit sand paper and clean all the dust up.
If you want a natural wood finish you can skip the stain.
If you do stain you don t want to sand after the stain application before the first coat of polyurethane.
I lightly sand between coats with extra fine synthetic sanding pads.
When applying polyurethane brush along the grain stretching the polyurethane into as thin a coat as.
Step 1 allow the first polyurethane coat to dry.
After applying the first two coats of polyurethane it is important to remove any blemishes in the dried polyurethane by both wet sanding and using a razor blade.
Step 1 inspect the polyurethane finish after it is dry to the touch.
The sanding between coats accomplishes two things.
You don t have to stain before you use polyurethane.
It removes defects from the applied urethane as well as small dust particles lodge in the dry finish.
What type of product do i need to use.
If you do have to sand between coats of polyurethane on floors because you didn t get to the second coat within the required time frame then that s a bummer.
Sanding polyurethane between coats sanding polyurethane between coats image source stain or no stain.
The goal is to roughen the surface a bit and rub out dust motes hairs and drips.
Look closely at eye level across the surface of the dried polyurethane for any bumps or dust specks.
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.
You will get oil based and water based polyurethane in the market.
Depending on temperature and humidity it may take up to 24 hours.