What people ask us on the roof

Yes. On-site estimates are free anywhere in our service area, with no obligation. We walk the roof when it's safe to, look in the attic if there's access, and put what we found and what we'd do in writing.

The scope in plain words (tear-off, overlay or repair, and which slopes), materials by type and color, underlayment and ice-and-water shield, which flashing gets replaced, ventilation changes, how damaged decking is handled, cleanup and disposal, whether a permit is needed, and the schedule and payment terms. There's a longer version of that list on our about page.

Not always. If the job can be judged from outside, like a gutter run or a repair visible from the ground and the roof, we can do it while you're at work. If we need the attic, or you want to walk it with us and ask questions, we'll find a time you're there. Most people like to be.

It changes with the season. Late summer and early fall fill up fastest, because everyone wants the roof done before the rain settles in. Call and we'll give you a real date rather than a guess.

Often, yes. Replacement work happens through fall and spring in dry windows. We don't tear off in the rain, we watch the forecast closely, and we only open as much roof as we can dry in the same day. In cold weather, shingles are slower to seal, and manufacturers call for extra steps such as hand-sealing, which we follow.

Many single-family roofs take one to a few working days on site. Steep, cut-up roofs, more than one layer to remove, deck repairs and weather all add time. Your estimate gives you the expected window for your house.

Months of rain, mild temperatures and shade. Moss takes hold where a roof stays damp longest: north-facing slopes, under firs and big maples, and anywhere needles and debris pile up in the valleys and behind chimneys. Once it's established it traps more debris and more water, and it spreads.

No. A pressure washer strips the granules that protect shingles from the sun, and it can drive water up under the courses. Moss comes off with a treatment and gentle hand removal, and debris is cleared from the valleys so it doesn't come straight back. That's part of roof maintenance.

At least once a year in late fall after the leaves are down, and again in spring if you're under firs, which drop needles all year. A house under big trees may need more. Clogged gutters overflow at the fascia, and that water ends up in the fascia board, the siding and sometimes the foundation.

Usually the gutters are too small for the roof area feeding them, there aren't enough downspouts, the pitch is wrong so water sits, or the hangers have sagged. A long, steep roof in a Northwest downpour can put more water into a gutter than a 5-inch profile with small downspouts can carry. Bigger gutters, larger or additional downspouts, and hidden hangers on tighter spacing usually fix it. See gutter systems.

From the ground, not the roof: look for missing or folded shingles along the edges and ridge, lifted flashing, branches on the roof, and gutters pulled away from the fascia. Inside, check ceilings and the attic for new stains. Don't climb an icy or wet roof. If you find damage, call us at (971) 280-9253. Same-day emergency response may be available depending on scope, and where the situation allows we may be able to tarp or dry in the damaged area until it can be repaired.

Yes. Acosta Roofing LLC holds Oregon CCB license #263343. You can check it, with the bond and insurance on file, on the Oregon CCB license search. Our about page explains what each of those words means.

It depends on your city or county and on the job. Some jurisdictions require a permit for a re-roof, others only when sheathing or structure is replaced, and a repair often needs none. We check with the jurisdiction the house is in, and the estimate says whether a permit is needed and who pulls it.

Yes. We work anywhere in Oregon within about 75 minutes' drive of our Beaverton shop, which takes in parts of 9 counties from Columbia down to Linn. The service area page has the map and the town list. Just past the line? Call anyway.

Low-slope and single-ply membrane roofs (TPO and PVC) on shops, warehouses and light-industrial buildings: replacement, repair, and detailing at curbs, drains, scuppers and rooftop units, where most commercial leaks start. See commercial roofing.

Yes. Multi-unit work is planned building by building around the residents: notice before work starts, where the trucks and debris container go, working hours, and keeping entries and walkways clear and safe. We work with property managers and HOA boards on scope and scheduling. See multi-unit roofing.