Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Repair Across Alpine
Roof repair in Alpine, CA usually costs between $350 and $1,400 for common fixes like shingle replacement, leak repair, and flashing work. Larger repairs involving valley rebuilds or decking replacement can run $1,800 to $4,500. Most Alpine jobs are completed in one day, and we always put the price on paper before any work starts. If you’ve got water coming in or shingles lifting, call us at (361) 320-9467 and we’ll send a background-checked, uniformed technician to Alpine to assess the damage and give you a written quote.
Why Brennan Roofing Is Alpine’s Preferred Roof Repair Company
Alpine homeowners call us because we show up when we say we will, with a written price in hand. That’s the Garrison Standard, and it’s the same on every job, whether you live off Alpine Boulevard or up near the Viejas Grade. Our technicians know the difference between a roof that’s failing from sun damage on the south side and one that’s rotting from trapped moisture on the north side. That local read saves Alpine homeowners real money because we fix the actual cause, not just the visible symptom. Every repair is backed by the 365-Day Done Right Promise: in writing, for one full year, and we come back for free if it fails. Travis Oakley runs this crew, and he answers for every job personally.
Commercial Roof Repair in Alpine
Commercial Roof Repair in Alpine means working on low-slope and flat roof systems that take a beating from the mountain sun. We repair membrane tears, ponding water damage, failed seams, and flashing penetrations on retail spaces, offices, and warehouse buildings along Alpine Boulevard and the Tavern Road corridor. A typical commercial patch or seam repair runs $600 to $1,800 depending on the membrane type and damage extent. Full commercial roof restoration on older TPO or built-up roofs runs $4,500 to $12,000. You get a written price before we touch the roof, and the same one-year written guarantee applies to any commercial repair we make.
Low-Slope Membrane Repair
Alpine’s commercial buildings often have TPO or modified bitumen roofs that expand and contract hard in the mountain temperature swings. We inspect seams, boots, and parapet flashing for signs of UV cracking and thermal stress. Small punctures get patched and heat-welded; failed seams get cleaned, primed, and resealed with the correct membrane-compatible material.
Parapet and Edge Flashing
Parapet walls on Alpine commercial buildings trap water when the cap flashing separates from the wall. We replace failed coping, reseal terminations, and install new counter-flashing where the old metal has pulled loose. This is the kind of repair that costs $800 to $2,000 and prevents a $10,000 deck replacement three years later.
Roof Leak Repair in Alpine
Roof Leak Repair in Alpine starts with finding the actual entry point, which is rarely where the stain appears on your ceiling. Water can travel along rafters and decking for ten feet before it shows up inside. Most Alpine leak repairs run $350 to $1,100, with the price going up if we find rotted decking or failed underlayment that has to be cut out and replaced. We use ice and water shield in valleys and around penetrations because Alpine’s winter rains and freeze-thaw cycles punish shortcuts. A leak you ignore through the summer will be a rotted fascia and soffit problem by February. Call us before that happens.
Valley and Flashing Leaks
Alpine’s ranch-style homes have more valleys and gables than a standard suburban track home, and every one of those intersections is a leak waiting to happen. We remove the failed valley metal or shingles, inspect the decking beneath, replace anything soft or swollen, and install new flashing with the correct lap pattern for Alpine’s rain direction. The repair is detailed for both moisture and UV exposure, because Alpine’s climate attacks from both sides.
Vent Boot and Pipe Collar Leaks
Rubber boots around plumbing vents crack in Alpine’s heat after seven to ten years, and that lets water run down the pipe and into your attic. We replace old boots with UV-stable models rated for high-altitude sun exposure. It’s a $250 to $450 repair that most homeowners don’t notice until the drywall ceiling starts sagging.
Trusted Brands We Service in Alpine
We install and repair shingles from GAF, Atlas, and CertainTeed, and we stock common accessories locally so Alpine customers aren’t waiting on a warehouse in San Diego. If your roof has an older Tamko or Owens Corning shingle line that’s been discontinued, we’ll match the profile as closely as possible and tell you flat-out before we do the work if a full replacement makes more sense than a patch. We don’t push one brand on you; we explain the material tradeoffs in plain English and let you choose with the price on paper.
Common Roof Repair Problems We See in Alpine Homes
- Moss and algae on north-facing slopes – Alpine’s morning marine layer settles on shaded roof planes, and moss grows under shingle edges and lifts the starter strip. That creates hidden leaks that only show up during winter rains, long after the moss has been doing quiet damage.
- Curled and sun-baked shingles on south-facing planes – the same roof can look ten years older on the south side than the north. UV at 1,800 feet is relentless, and the shingle granule loss accelerates once curling starts. Repairs here need UV-stable replacement shingles, not whatever’s left in the truck.
- Split and cracked flashing at valleys and chimneys – Alpine’s freeze-thaw cycle works on any existing crack in metal flashing and makes it worse every winter. Where decking underneath has swelled from prior moisture, you get a chain reaction that turns a simple flashing repair into rotted wood replacement.
- Drip edge failure on long eaves – many Alpine homes have wide overhangs that shed rain onto fascia that was never properly flashed. Water backs up under the bottom shingle course and rots the first few inches of decking. We see this repeatedly on homes built in the 1980s and early 1990s around the Rancho Palo Verde and Al Bahr Shrine areas.
Pricing for Roof Repair in Alpine, CA
Here’s what you should expect to pay in Alpine for common roof repairs: shingle replacement runs $350 to $700 for a small area, and $1,200 to $2,800 for a full slope. Flashing repair around chimneys or skylights runs $400 to $1,000. Flat roof patches run $600 to $1,800 depending on membrane type. Valley rebuilds run $900 to $2,500. Vent boot replacement runs $250 to $450. The biggest price swing is decking: if we find rotted wood underneath, every affected sheet adds $250 to $400 in material and labor. We never start work without a written line-item price, and that price does not move at the door. Call (361) 320-9467 for a free estimate.
We Also Serve Cities Near Alpine
Brennan Roofing handles Roof Repair calls throughout eastern San Diego County. If you’re in Jamul, Lakeside, El Cajon, or Santee, the same Alpine Standard applies: written price before any work, background-checked uniformed technicians, and a live person answering the phone around the clock. We schedule Alpine and surrounding-area repairs daily.
Serving Alpine, CA - Our Local Coverage Area
We’re based in the Alpine area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Repair in Alpine
Because Alpine sits at 1,800 feet, your north-facing roof plane catches the morning marine layer that burns off by noon, and that consistent moisture feeds moss and algae growth under shingle edges. Your south-facing plane gets eight hours of intense high-altitude UV, which bakes the shingles until they curl and lose granules. It’s the same roof, two different failure modes. Repairing it correctly means plane-specific materials: moisture-resistant underlayment and zinc strips for the north side, UV-stable shingles and sealant for the south. Call (361) 320-9467 and we’ll give you a written assessment of both planes.
Look beyond the shingle brand and compare what’s under and around it. A quote that uses GAF architectural shingles but skips underlayment replacement or reuses old flashing is weaker than a quote using Atlas shingles with new ice and water shield in the valleys and fresh drip edge. Ask each roofer what they’re doing about decking, underlayment, and flashing, and whether the price is written before work starts. Ours is, every time. Call (361) 320-9467 for a line-item quote you can compare honestly.
Valley flashing, step flashing against walls, and the kick-out flashing where a roof meets a sidewall. In Alpine, we also pay close attention to the counter-flashing on chimneys because mountain wind drives rain sideways into corners that coastal roofs never see. The most commonly skipped detail is the drip edge-to-gutter connection, where water backs up and rots the bottom shingle course. We put the flashing details in writing on every quote so you can see exactly what you’re paying for. Call us for a free inspection.
Yes. We handle combination failures on Alpine commercial buildings regularly, especially on low-slope roofs where north-facing sections hold moisture and south-facing sections bake. The repair involves treating the moss with appropriate algaecide, cutting out the UV-degraded membrane, and patching with material compatible with your existing system. You get one written price for the whole roof, not two separate invoices. Call (361) 320-9467 and we’ll inspect your building and put it all on paper.
Freeze-thaw cycles in Alpine mean small cracks in flashing and valley metal expand every winter and let water in during the first storm after summer. If you wait until January to fix a leak that started as a hairline crack in September, you’re looking at decking replacement instead of a simple flashing repair. The best time to repair is between storms in late fall or early spring. We work Alpine year-round, and we respond quickly when the rains hit. Call (361) 320-9467 to schedule your free estimate now, before the next cycle catches you.
Written by Travis Oakley, Owner at Brennan Roofing, serving Alpine, CA and surrounding communities.






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