Home Improvement Glossary

fascia carries the weight of the gutters, and wood fascia rots from behind when gutters overflow or back up. The damage is often invisible from the ground until the gutter pulls away from the house. The cleanest moment to inspect and replace damaged fascia is during a re-roof, while the gutters are off and the edge of the roof is exposed. Fixing it later usually means redoing the gutters too.

in fire-zone Southern California (which covers most of the LA basin and every hillside), fiber cement is the siding that earns insurance and fire-code points. James Hardie is the dominant brand. It typically costs around 2x vinyl up front but lasts 50-plus years with one repaint along the way, and it does not buckle in summer heat the way vinyl can. The other reason it dominates LA remodels is that it takes paint cleanly, so color updates later are straightforward.

permeable pavers let rainwater drain through to the ground instead of running off, which solves both flooding and stormwater regulations that are tightening across LA. They cost more than standard pavers (the open-graded base is more expensive) and need annual vacuuming to keep the joints from clogging with debris. For driveways in flood-prone areas or properties under stormwater rules, they are often the cleanest answer.

polymeric sand is what keeps a paver surface from becoming a weed garden in two years. It hardens between the joints when activated with water, locking the pavers together and preventing ant hills, weeds, and erosion. It does need replenishment every 5-10 years as foot traffic and weather wear it down. Skipping it on a new install is the most common shortcut on cheap paver jobs.

power washing is the standard prep step for any exterior repaint, but the pressure has to match the surface. Too much pressure on old wood lifts the grain, on stucco it can drive water behind the finish coat, and on lap siding it can force water under the laps where it sits and rots the sheathing. Drying time after washing is non-negotiable, usually 24-48 hours minimum before priming.

retaining walls fail when drainage is wrong, not when the wall material is wrong. Water builds up behind the wall (hydrostatic pressure) and pushes it out, often within a few years for poorly drained walls regardless of construction quality. The fix is a drain rock backfill plus weep holes or a perforated drain pipe at the base. In California, walls over 4 feet typically require engineering and a permit.

ridge vents work continuously with soffit vents to pull hot attic air out at the top while cool air is drawn in at the eaves. They typically move more air than passive box vents and keep working even when there is no wind. In LA summers, attic temperatures over 130 degrees are common, and a properly vented ridge can pull those temperatures down meaningfully and extend shingle life.

the scratch coat is what the rest of the stucco system grips onto. If the horizontal scoring is too shallow, or the coat does not cure long enough before the brown coat goes over it, the entire wall can fail years later by delaminating in sheets. Curing time between coats is the variable most often cut on speed-driven jobs, and it is the single most common cause of long-term stucco failure.

SHGC is the rating that matters most in Southern California. A low SHGC (under 0.25) keeps a house cooler in summer, reduces AC load, and protects flooring and furniture from sun damage. West and south-facing windows benefit most. Title 24 for LA climate zones typically requires SHGC at or below 0.25, and the rating is printed on the NFRC label that ships with every new window.

paint longevity is roughly 80% surface prep and 20% paint quality. Loose paint, mildew, dirt, and unfilled cracks all but ensure premature failure regardless of how expensive the topcoat is. The single most-skipped step on contractor jobs is letting washed surfaces fully dry before priming. If a paint quote is suspiciously low, prep is usually where the savings came from.

VOCs in paint are the chemicals you smell after a fresh paint job, and they affect indoor air quality for days or weeks after application. California has some of the strictest VOC limits in the country, especially in the South Coast Air Quality Management District, which covers all of LA. Modern low-VOC and zero-VOC paints are widely available and effectively required for most residential interior work.