Prepping a Room for Painting
Prepping a Room for Painting

Prep The Walls

Fix cracks in the drywall
Check your walls to see if there are any cracks that need to be filled.
If there are plaster cracks, the first step is to use a five-in-one tool to make the crack wider beneath the surface of the wall than it is on the wall, like an inverted V.
Remove loose debris and fill the crack with lightweight crack filler.
Wait 24 hours, then sand using 220-grit sandpaper.
After sanding, prime the area with a latex stain-blocking primer.
Remove and cover mold, mildew and other stains
First, make sure to correct the problem that created the stain or mildew.
To remove mold or mildew, make a cleaning solution with three parts water and one part laundry bleach. Protect your eyes, hands and mouth if sensitive to bleach.
With a sponge, apply the bleach mixture liberally to the stain.
Wait 20 minutes, and apply it again, even if the mold has disappeared.
Rinse off the bleach with clean, fresh water.
Allow it to dry and then clean with a trisodium phosphate (TSP) solution.
Rinse the entire wall surface with clean, fresh water. Let it dry overnight.
More prep before painting
Remove all electrical cover plates and dimmer knobs.
Cover the switches and receptacles with blue painterís masking tape.
Remove all furniture or group it in the center of the room and cover it with a drop cloth.
Sand, if necessary. Remove loose dust with a tack cloth.
For complete floor coverage, put a drop cloth under the masking.

Selecting and Purchasing Paint

Before making your final color selection for a wall, paint several test panels and put them in the room to be painted under different lighting conditions to be sure you are satisfied with the color.
Some paint colors can be purchased in very small quantities. You can apply the paint to the wall to make sure the color is just what you want.
To determine the quantity of primer and paint needed, calculate the square footage of the surfaces to be painted. For each wall, multiply the height of the wall times the length of the wall. You will need one gallon for every 300 square feet, so take the number of square feet and divide by 300. It is better to have more paint than you need than to run out during the middle.

Always Apply a Primer

Priming is an essential part of the painting process. While paint provides color, primer provides durability and blocking. After you apply primer, lightly sand the surface with 220-grit sandpaper. Then wipe down the walls with a tack cloth or damp rag to remove the dust.
Primer is designed to:
Increase adhesion of the paint.
Help the finish coat develop maximum sheen.
Give the finish coat a uniform appearance.
Block stains such as water, dirt and smoke.
Block tannins from aromatic woods.