Stucco & Exterior Walls in Marina del Rey
Marina del Rey stucco starts with the metal inside the wall: galvanized lath and zinc or vinyl trim that will not rust through paint.
Where the air carries salt, the steel inside a Marina del Rey wall is the first thing to give out, which is why the material choice starts with metal: galvanized lath, plus corner beads, casing beads and screeds made of zinc or vinyl. Bare steel trim rusts and bleeds through paint. The cement plaster over the metal is noncombustible, so it handles the fire side of the wall.
Metal that lasts
Lath is hot-dip galvanized, and the coating is only as good as the cuts and fasteners that pierce it. Fasteners are corrosion resistant too, since a plain steel nail rusts out of its hole and lets the lath sag. Zinc and vinyl accessories handle the edges and corners where plaster ends, and they take paint well. Their coatings are checked for scratches before they disappear under the plaster. Dissimilar metals touching each other corrode faster in damp air, so the lath, nails and trim are chosen as a matched set.
Plaster that lets go of water
Cement plaster is noncombustible, which suits a hardened exterior. Color mixed into the finish coat leaves no paint film to peel, and where paint is used, a vapor-permeable masonry coating lets the wall dry through its face. The base of the wall is the worst place for damp, so the screed is held clear of the ground and the plaster above it is detailed to shed water outward. Fiber cement siding becomes the choice when a wall needs more repair than patching can deliver.
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Stucco & Exterior in Marina del Rey: common questions
Two noncombustible builds exist for this wall: troweled cement plaster on galvanized lath, and board siding made of fiber cement. Both resist flame, and in damp air both outlast bare wood. The wall counts as ignition resistant only when its details agree: rated vents, closed eaves, and trim that keeps off the ground. The scope lists those beside the cladding.
A tap test and a look behind a small opening decide it. Sound, dry layers make patching reasonable. Rusted lath, stained sheathing or hollow plaster call for a strip, because new plaster over corroded metal fails again. When stripping is the answer, new corrosion-resistant lath and trim go on in its place.
Plaster ends at a zinc or vinyl screed with a drain slot, and open air below it lets moisture out. A wall that runs into soil or paving gets its bottom band opened and the screed raised. A bare, noncombustible strip stays in front of the wall so mulch and plants cannot hold moisture against it.
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Tell us about the house and the stucco & exterior work. We reply about a walk-through and a written scope.