Preparing Walls for Paint in an Old Torrance House

A patch is only as flat as the wall behind it. Painting work in Torrance, CA starts with reading that wall, and the crew, as the notes at torrance painting contractor burnside writers collective put it, walks every room with a straightedge and a raking flashlight before a single tub of paint is opened. A house from the early 1900s in Old Torrance and a post-war tract home in the South Bay fail in different ways, so the repair list differs too.

Plaster walls in Old Torrance

Original plaster over wood lath cracks along the lath lines and around door heads. A hairline crack that is simply filled with spackle comes back within a season, because the plaster on either side still moves. The fix is to open the crack slightly with a utility knife, bed fiberglass mesh tape in setting compound, and feather the edges wide. Loose plaster that sounds hollow when tapped needs to be screwed back to the lath with plaster washers before any patching begins.

Drywall in the tract homes

Post-war walls tend to show nail pops, tape seams that have lifted, and dents from furniture. Nail pops are reset below the surface with a screw set a few inches above or below the old nail, then covered in two thin passes of compound. Lifted tape is cut out, not painted over, and replaced. Orange peel texture on ceilings is a separate job, since it has to be matched with a hopper or a can of knockdown mix rather than sanded flat.

Sanding and dust

Compound shrinks as it dries, so most patches need a second coat before sanding. Pole sanding with 150 grit paper levels the repair without gouging the paint around it. A scuff sand over the whole wall, including old gloss paint, gives the primer something to grip. Dust is wiped with a damp rag, not blown off, because fine powder left in the texture shows up as pimples under the topcoat.

Primer over repairs

Bare compound soaks up paint faster than the wall around it, and the difference shows as dull patches called flashing, even under a flat finish. A coat of acrylic primer over every repair, and over water stains with a stain blocking product first, evens out the absorption. Old oil based paint that is chalky or glossy gets a bonding primer so latex will hold.

Caulk and the last look

Gaps at baseboards, window casings and crown molding are sealed with paintable caulk, tooled with a wet finger and left to skin over. Then the crew goes back with the flashlight held flat against the wall. Any ridge, pit or hollow that shows under that light will show again when afternoon sun comes through a window near Wilson Park or Columbia Park. Only after that second look does the first coat go on, with a roller for the field and a brush to cut in the corners.