Wet surface with water prior to cleaning. Apply cleaning solution liberally with a pump sprayer, mop, brush, or roller. Keep the surface completely wet with the solution for 10-15 minutes.
Scrub the surface using a stiff bristle broom or brush. The solution will foam.
After scrubbing, thoroughly rinse the surface area with clean water at normal pressure or using a pressure washer at low setting (500-1200 psi).
Let surface dry. Next, lightly sand any loose wood fibers with medium grit sandpaper.
For interior wood applications, use BEHR PREMIUM PLUS® All-in-One Primer and Sealer. For exterior wood applications, use BEHR PREMIUM PLUS® Multi-Surface Primer and Sealer.
To apply the primer, use a high-quality 3/8 - 1/2" nap roller cover, nylon polyester brush or airless sprayer.
Stir the primer occasionally. Do not thin if using a roller or brush. If using a sprayer and thinning is required, then thin with up to 1/2 pint of water per gallon of primer. Heavy stains may require two coats.
The primer will dry to touch in 30 minutes and be ready to topcoat in 1 hour. Use the primer when air and surface temperatures are between 50-90 degrees F. Clean up with soap and water.