Painting a Patio Cover or Pergola in Riverside

Stand under a pergola at noon and look up at the rafter tops, where the paint has turned to powder and the grain has opened into small splits. Painting a patio cover in Riverside, CA is mostly the work of repairing those tops, and painting riverside ca curiously veg radio sets the order of the job deliberately, because the sun hits horizontal surfaces for hours longer than it hits any wall.

Why the tops fail first

A wall gets sun for part of the day at a slanted angle. A rafter top gets it from sunrise to dusk, and rain, when it comes, sits there and soaks in. End grain, the cut face of every rafter and beam, absorbs the most and checks the most. Under the film, the wood swells and shrinks until the coat lets go in sheets.

Stripping what is loose

Loose film comes off with a scraper and a wire brush, and a sander with an eighty grit disc feathers the edge so the new coat does not show a ridge. Gaps where a beam meets a ledger board or a post get exterior caulk, after checks wide enough to take a fingertip get filled with spackle rated for outdoor wood. A coat of oil based primer on bare wood stops tannin bleed and seals the grain.

Brush, roller or sprayer overhead

An airless sprayer covers a lattice cover fast, but paint drifts, and a house with fresh stucco and a white car in the driveway needs thorough masking. A brush gets paint into end grain and the joints, and a roller with a low nap covers a flat purlin quickly. Many crews spray and then back-brush the end grain, which gives film where it matters most. Near stucco walls, a cut in line with a brush keeps a clean edge and no color on the wall.

Coats, sheen and color

Two coats of acrylic latex over primer is the normal build on the top and sides of a beam. Satin holds up well under hard sun and washes clean of dust, and flat hides a tired surface but chalks faster. A lighter color stays cooler under the Riverside sun, and the wood beneath moves less. A dark stain on a pergola beside a south facing wall runs far hotter than the shaded board next to it.

Posts and the base

Post bases where wood meets concrete hold water in a sprinkler zone. Raising the cut end off the slab, sealing it with primer and caulk, and keeping sprinkler heads aimed away from the wood adds years to the film.