Sanding produces dust, which may make it difficult for new paint to stick. As such, you should wipe the old wood surface with a mixture of 1 cup bleach, 1 cup trisodium phosphate (TSP) and 2 gallons water. Let the wood air-dry before you apply primer. Cleaning kills any mold and mildew in the old wood.
Furthermore, can you use paint thinner to clean surface before painting?
Paint thinner leaves an oily residue. Thats why we recommend that it be the last thing you run through a paint sprayer when cleaning it. So it will keep all the seals and orings lubricated. Use something like MEK, lacquer thinner, or xylene to wipe before painting.
Beside above, can I use vinegar to clean wood before painting?
Combine equal parts vinegar and water in a bucket. Wipe down the entire wall with the solution to remove the invisible grime so you have a clean surface for priming and painting. Dust also collects on top baseboards and trim. Wipe these areas with the vinegar solution before you paint.
What to use to wipe down before painting?
Use sandpaper or a sanding block to dull any uneven surfaces, wipe away dust with a damp cloth and let dry thoroughly. Smoothing walls before painting is necessary for surfaces previously painted with a gloss or high-gloss paint. For previously painted water-based paint, sand with a fine-grit sandpaper.
