How to Prep a Subfloor
More in Floors
Step 1: Level the Seams
Make sure all the nails are below the surface. Make sure the seams are level. If they're not, belt sand off the high spots.
Step 2: Fill the Gaps
Fill the gaps that are larger than 1/8" with skim coat. You will want to work fast because this is a gypsum-based skim coat and will dry within five minutes.
Step 3: Apply the Skim Coat
Work in the skim coat and feather the edges. Go back over it with a large mudding (drywall) knife for a smooth finish. After it dries, knock down the high spots with a random orbital sander.
Step 4: Attach the Rosin Paper
Cover the subfloor with rosin paper to create a moisture barrier between the subfloor and the finished floor and will smooth out any imperfections. Tack it down with a hammer stapler.
Was this project helpful?
Advertisement
Find your DIY inspiration or just steal ideas from the best renovations and remodels done by the DIY Network pros.
