Frequently Asked Questions

Salt air, persistent fog, and temperature swings accelerate shingle degradation and fastener corrosion along the coast. Roofs in Daly City typically need inspection every 2-3 years rather than the standard 5-year interval. Wind-driven rain also increases leak risk around flashing and penetrations.

Metal roofing lasts 40-70 years versus 15-25 for asphalt shingles and resists wind uplift better in coastal conditions. Metal costs 2-3 times more upfront but eliminates mid-life replacement. Shingles offer more color options and lower initial investment but require more frequent maintenance in foggy climates.

Clean gutters twice yearly—late fall after leaves drop and early spring before heavy rains return. Homes near eucalyptus or redwood trees need quarterly cleaning since these species shed year-round. Clogged gutters overflow during winter storms, causing fascia rot and foundation erosion.

Standing water from inadequate slope, foot traffic wearing through coatings, and UV exposure breaking down sealants cause most failures. Coastal fog keeps decks damp longer, accelerating wood rot beneath compromised waterproofing. Proper drainage design and high-grade coatings extend protection beyond standard 5-year expectations.

Water staining on ceilings, missing shingles visible from the ground, or daylight showing through the attic indicate urgent needs. Wind can lift shingles without tearing them off, breaking the seal and allowing water infiltration. Tarping within 24 hours prevents interior damage and supports insurance claims.

Flat or low-slope commercial roofs collect standing water and debris, requiring quarterly inspections and drain clearing. Foot traffic from HVAC maintenance damages membrane roofs more than sloped residential systems face. Ponding water accelerates membrane degradation and creates leak points within 2-3 years if unaddressed.

Material choice, wall height, trim complexity, and whether old siding requires disposal drive pricing. Stucco repairs cost more than vinyl or fiber cement replacement due to multi-coat application and longer cure times. Moisture damage discovered during removal adds sheathing replacement to project scope.

Inspectors check shingle condition, flashing integrity, ventilation adequacy, and structural decking from both exterior and attic. Photos document trouble spots like lifted shingles, worn valleys, and inadequate ventilation causing premature aging. Detailed reports identify immediate repairs versus components nearing end of service life.

Replace if the roof is over 70% through its expected lifespan or damage covers more than 30% of the surface. Matching discontinued shingle colors for small repairs often fails, creating visible patches. Storm damage to roofs under 10 years old usually qualifies for repair covered by insurance.

Waterproof membranes and drainage systems keep groundwater away from foundation walls, preventing hydrostatic pressure cracks and moisture infiltration. Bay Area clay soils expand when wet, pushing against foundations and creating entry points for water. Exterior waterproofing addresses the source rather than managing interior symptoms.

Surface cleaning, scraping loose paint, filling cracks, sanding rough areas, and priming bare wood happen before any topcoat application. Coastal homes need mildew treatment since fog promotes growth that causes paint adhesion failure. Proper prep accounts for half the project timeline but determines coating longevity.

Hairline cracks under 1/8 inch and isolated damage get patched, while widespread cracking, bulging, or moisture staining behind stucco indicates system failure requiring removal. Older stucco without drainage planes traps moisture against sheathing, causing hidden rot. Thermal imaging reveals moisture intrusion invisible to surface inspection.