Topic · Walls & Surfaces
Mold-resistant drywall for Florida baths, leak- and storm-driven drywall repair, mildew-resistant interior paint, UV- and humidity-rated exterior coatings, trim and crown detailing.
29 articles published in this topic · updated weekly.
Walls & SurfacesComparison··10 min read
PVA equalizes the porosity of new drywall so paint will not flash; a shellac or alkyd stain-blocker locks down the water-stain bleed a humid Florida wall pushes back through latex.
All Walls & Surfaces Articles
Sorted newest first. Each article links downstream to the relevant Pro Work Flooring service pages and to other articles in the same cluster.
Most Florida homes are CMU block, not stud framing. Furring plus a foil-faced foam moisture break keeps gypsum off the masonry — block wicks humidity straight through, and drywall glued flat to it molds within a season.
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A covered-porch ceiling lives in unconditioned, salt-laden air. Here is how cypress, western red cedar, and cellular PVC compare, and why the fasteners matter as much as the boards.
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Paper-faced drywall feeds mold and dissolves in a flood. Here is when fiberglass-mat paperless gypsum is enough for a Florida wet wall, and when rigid PVC panel is the code-driven call.
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Florida shortens the repaint cycle by intensity, not neglect. Here is how UV chalks the binder, why south- and west-facing walls fade first, and the chalk test that tells you when to recoat.
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Salt deposition, UV, and wind-driven rain shorten coating life on the coast. Here is how 100% acrylic and elastomeric coatings compare by perm rating, elongation, and mildew resistance on Florida stucco.
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The repair-vs-replace call is decided by a moisture meter and a clock, not by how the paint looks. Here is the flood-cut height, the mold-behind-the-wall test, and the Florida dry-out rule.
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Shiplap traps a humid air gap behind the boards, so in Florida the substrate decides survival. PVC vs moisture-resistant MDF vs wood, by zone — plus a real install sequence.
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Cellular PVC fascia absorbs no water, so it cannot rot like wood. The catch is heat movement and corrosion: long runs must be gapped and every coastal fastener must be 316 stainless.
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In a Florida bath that runs humid year-round, sheen is moisture defense, not looks. Here is how flat, eggshell, satin, and semi-gloss compare on the specs that decide whether mildew gets a foothold.
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Greenboard is moisture-resistant drywall, not a code-legal shower backer. Here is what FBC R702.3.7 and R702.4.2 actually require behind tub and shower tile, and how cement board, fiber-cement, and glass-mat gypsum compare.
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Greenboard is water-resistant, not waterproof. Here is the board each Florida wall actually needs by location, with the ASTM and Florida Building Code standard that governs dry walls, damp rooms, and the wall behind your tile.
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In Florida the vapor drives inward, so a plastic sheet behind drywall traps moisture and grows mold. Here is the code-correct Class III retarder, by perm rating, for a hot-humid zone 2A wall.
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