A city built on fill
Frank Brewer owned about 2,600 acres of tidal marsh called Brewer Island, and the Foster family developed it in the 1960s. Foster City incorporated in 1971. The lagoons are part of the design, and the land is graded so water drains toward them. On that kind of site, a roof that drains badly causes trouble quickly.
Roofing services for lagoon-side homes
- Roof Repair
Flat lots with open bay wind mean lifted edges and failed sealant, which are traced from the stain before any patch. We photograph the ridge and rake edges first, since wind works there before it reaches the field.
- Roof Replacement
Houses of one planned era reach roof age together, and the plan starts with a layer count and decking check. Because neighbors compare notes, the estimate itemizes what is removed, replaced and flashed.
- Flat Roofing
Low-slope sections on homes need a membrane and drainage that works on a city built on level ground. We check ponding, seams and drains, and photograph standing water so the estimate shows what a fix reaches.
- Gutters
Drainage on this flat site depends on gutters and downspouts working as designed, so they are checked with the roof. Downspout outlets that dump near the foundation are extended or redirected.
- Emergency Roof Repair
A leak is sealed first, and the San Mateo Bridge crossing is described honestly. Bridge traffic changes the arrival, so you get a visit window and a plain account of what can be sealed on the first visit.
- Storm Damage Roofing
Open water and level ground let bay wind reach rooftops at full strength. Lifted ridge and rake shingles are photographed with dates before cleanup, and we meet your insurer's adjuster on site if you file.
- Roof Inspection
A photographed inspection of layers, decking, flashing and low-slope seams gives you records to show an association board, a buyer or an insurer, which helps when approval and bids need the same facts.
Same-age houses, shared problems
Neighborhoods here went up in waves, so a cul-de-sac often has roofs of one age. When one house on the block needs work, the others are close behind. We still inspect each roof alone. The checks are the same everywhere in the city: layer count, decking condition at the eaves, flashing at walls and chimneys, and the state of the vents. The estimate lists what we found at your house, not the neighbor's.
Wind off the bay
With flat ground and open water on several sides, wind reaches rooftops without much to slow it. Ridge caps, rake edges and loose sealant are the first to go. After a gusty day, look along the ridge from the lagoon path for a raised line, and call if you see one.
Townhomes and association rules
Many Foster City properties belong to an association. Association roof programs for many buildings are outside what this page covers. If you own a townhome with your own roof, check your rules for approvals first, then call us with the property type.
A city of 33,805 on engineered ground: repair or replace a low-slope section
Foster City counted 33,805 residents in the 2020 Census (U.S. Census Bureau), on land engineered flat around its lagoon. Water here has nowhere steep to go, so a low-slope roof section either drains well or becomes a pond. That makes the repair-or-replace call a drainage call.
If the membrane is sound and the problem is a clogged drain or a gutter outlet, the fix is small. If seams have opened, the surface has blistered, or the boards under it are soft, a repair only moves the problem. We check ponding, seams and the flashing line at the wall, and photograph each. The estimate then lists both paths, so you see what a section repair reaches and where a replacement begins.
Crossing the San Mateo Bridge
The route is the San Mateo Bridge, and its traffic changes the arrival time, so we give a window and not a promise. An inspector, often Wayne or Pedro, photographs the roof and the written estimate follows. You can see progress photos during the job. Nearby, San Mateo and Belmont are on the same side.