Preparation For Painting
MATERIALS: 12-inch baseboard masking; bleach; water; lightweight crack filler; blue painter's masking tape; 220-grit sandpaper; latex or oil-based, stain-blocking primer; TSP solution
TOOLS: Bucket, rubber gloves, drop cloth, 4-foot stepladder, sponge, phillips screwdriver, 3-inch putty knife, sanding block, 2-inch nylon brush, 9-inch roller with %-inch nap, roller tray, brass-wire brush
1 Move Furniture Away From Walls And Protect Floor and baseboards with 12-inch baseboard masking and a paper/poly drop cloth.
2 Set Popped Nails Or Screws repair cracks and holes, and fill dents with lightweight crack filler.
3 Let The Crack Filler Dry Per Manufacturer’s Instructions, then sand the area using a sanding block with 220-grit sandpaper.
4 Treat Any Areas Of Mildew with a 3-to-1 water/bleach solution. Protect your hands with rubber gloves.
5 Rinse The Entire Wall Surface With Clean, Fresh Water and Let the wall dry overnight.
6 Spot Prime all of the Repaired Areas with a latex, stain-blocking primer. If stains are still bleeding through, use an oil-based primer.
7 Prime The Entire Wall with the same stain-blocking primer for uniformity.
WET-SANDING - One of the most annoying parts of sanding plaster and joint compound is the flourlike dust that is produced. To minimize the dust, use a drywall wet-sander—a sponge with coarse abrasive on one side and fine abrasive on the other side. Use the coarse side to level ridges and high spots; use the fine side to smooth.
TSP = SQUEAKY-CLEAN WALLS - Trisodium phosphate (TSP), a powerful, nonsudsing soap, is the painter’s cleaner of choice. But phosphate also causes algae blooms in water bodies, so its use has been restricted in some areas. TSP substitutes are also available in box or bottle. TSP will prevent paint from bonding, so rinse the surface several times with fresh water to remove all residue. Always read the instructions. Clean with a TSP solution before you prime and paint.
Liquid Deglosser - While roaming through the paint department, you may run into something called "liquid deglosser.". It may sound a lot better than sanding, and it may be if you're repainting an office building. Working at home, the drawbacks probably outweigh the advantages. It's caustic, and the fumes are strong and dangerous. If you use it, ventilate the area, wear neoprene rubber gloves, goggles, and a respirator recommended by the deglosser manufacturer.
Glossy paints dry to a hard, nonporous surface; therefore, it’s almost impossible for new paint to adhere effectively. Glossy surfaces lack what painters call “tooth,” or roughness, which gives the paint something to stick to. It doesn’t take much to create tooth—a light sanding or use of a chemical deglosser will do the trick. When the surface has dulled and ceases to be reflective, it’s ready to paint. To detect gloss, use a bright light with a reflector to shield your eyes.
1 Fill Gaps In Trim And Baseboard With Paintable Caulk; after drying, sand all glossy areas lightly with 220-grit sandpaper. Use a sanding block for flat surfaces, a brass-wire brush for fluted surfaces.
2 Remove The Sanding Or Brushing Residue with a damp rag or tack cloth.
Treating stains and mildew
It would be perfect if a fresh coat of paint, especially over a good primer, would cover stains, water marks, and mildew. In fact, when the paint is still wet, it may appear to cover. As it dries, however, these stains will seep through and you’ll end up with a fresh coat of stained paint. Before you prime or paint, remove stains and mildew. It takes elbow grease, but cleaning will save time in the long run because you won’t have to repaint. Regular household bleach diluted with water is extremely effective in destroying the spores that cause mildew. Water stains need to be fixed at the source before you repair the wall or ceiling.
MATERIALS: Water, household bleach, primer and paint, TSP solution
TOOLS: Bucket, rubber gloves, 4-foot stepladder, old clothes, safety goggles or glasses, large round-cornered sponge, rollers and brushes
Water Leaches Chemicals From Wood And Drywall. When the mixture seeps through a wall or ceiling, it stains.
Mildew Is A Spore In The Air. Given food (paper or paint] and moisture, mildew flourishes on walls.
What’s The Real Problem? Anytime mildew or stains are present on your walls, it's a sign of a larger problem. Find the source of the moisture that's causing the staining and fix it.
Beware What You Breathe - Don’t mix bleach with other household cleaners. Household cleaners often contain ammonia, which reacts with bleach to produce toxic fumes. Inhaling such fumes can cause dizziness, nausea, cramps, or extreme illness. If you do breathe such fumes, get outside and breathe fresh air until your symptoms disappear.
1 Mix Three Parts Water To One Part Laundry Bleach in a bucket. If you are sensitive to bleach, protect your hands and eyes.
2 Apply Liberally With A Sponge. Apply again after 20 minutes even if the mold has disappeared.
3 Rinse Off The Bleach And Dead Mildew With Clean, Fresh Water. Allow it to dry thoroughly before cleaning with TSP or a TSP substitute. Then prime with a stain-blocking primer, and paint.