Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
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AfterFast, Reliable Roof Repair Across Tustin
Tustin homeowners call us for Roof Installation - Tustin and repair when they need someone who understands that this city runs on two different clocks. Old Town’s century-old wood-frame bungalows fail one way. Tustin Ranch’s 1980s and 1990s concrete tile roofs fail another. Most roof repair in Tustin falls between $350 and $1,200 for targeted fixes like flashing, valley, or vent boot work. Call (743) 200-8347 and a live person answers, any hour, any day.
We know the neighborhoods off Newport Avenue, the tract homes running up past Tustin Ranch Road, and the Craftsman bungalows near Main Street. Our crews coordinate from the Los Angeles office and dispatch into Tustin throughout the week. When we arrive, the technician at your door has been background-checked, identity-verified, and their name and photo sent to you before the truck pulls up.
Why Mercer Roofing Is Tustin’s Preferred Roof Repair Company
The defining promise Mercer Roofing makes is simple: you know exactly who is walking up your driveway. Every technician is dispatched under the Threshold Verified standard, which means a background check, a photo ID badge presented at the door, and a clean, marked uniform. For Tustin homeowners who are often home alone, parents with young kids, or older residents who want proof of who’s there before opening the door, this is the difference that matters most.
We’ve built strong local standing across Tustin by doing what we say we’ll do. Our Roof Repair team arrives with a written price in hand before any work starts, and every repair carries a written 365-Day Done Right Promise. If the fix is not right within a year, we make it right. That guarantee is included on every job, not sold as an add-on.
Founded in 2000, Mercer Roofing is part of the Threshold Group family of home-service companies. Each location is independently owned and operated, and each is contractually held to the Threshold Verified quality framework. Grant Whitlock leads our team, and he insists on one thing above all: no work begins until the homeowner has the price in writing, understands the scope, and has approved it.
Emergency Roof Repair in Tustin
Emergency Roof Repair in Tustin happens most often during Santa Ana wind events, when 40 to 60 mph northeast gusts peel back tile edges, strip ridge caps, and send tree debris slamming into valleys and pipe penetrations. The damage is usually invisible from the ground. Homeowners often find it months later as a brown ceiling stain after the first concentrated winter rain. A temporary tarp and stabilization in Tustin typically runs $250 to $550, while permanent repairs generally land between $500 and $1,400 depending on what the wind exposed.
What the First Visit Includes
We start with a ladder inspection and photos of the full damaged area, not just the visible break. We check tile courses, ridge caps, valley metal, flashing at walls and chimneys, and penetrations. Then we hand you a written repair plan with a line-item price and an honest assessment of what can wait. If the roof is in danger of further damage that night, we tarp and secure before we leave.
When to Call Immediately
Call as soon as you see water staining on a ceiling, wet spots around a skylight, or missing tiles after a wind event. A leak left through one more rain cycle turns a $400 flashing fix into decking replacement and drywall work. Every hour the water tracks sideways above your ceiling, it costs more to fix. We answer live, 24/7, at (743) 200-8347.
Flat Roof Repair in Tustin
Flat Roof Repair in Tustin is concentrated in older commercial conversions and mid-century residential additions, plus a handful of patio covers and attached garages off Browning Avenue and the streets west of the 55. The common failure points are ponding water at low spots, split seams on older modified bitumen or torch-down, and cracked caulking around scuppers and roof drains. Typical flat roof patches in Tustin run $450 to $1,000, with larger section reseals or membrane replacements pushing higher depending on the deck condition.
Ponding and Drainage
Flat roofs fail when water sits longer than 48 hours. In Tustin’s dry climate, homeowners sometimes skip repairs because it never rains, then one solid storm fills a low spot and water finds the seam that opened up two years ago. Our first step is always identifying where water pools and why the drainage is not carrying it off. A well-executed patch on a flat roof should outlast the surrounding membrane by years, not months.
Seams and Penetrations
Most Tustin flat roof leaks trace back to a penetration: an HVAC curb, a vent pipe, a skylight frame, or an edge detail where the membrane meets a parapet. We remove the failed material around the penetration, inspect the deck below for rot or delamination, and rebuild the detail with new flashing and compatible membrane. Everything is priced in writing before the first cut is made.
Roof Repair in Tustin from Mercer Roofing covers everything from a two-hour flashing fix to a full underlayment replacement on a tile roof that looks fine from the curb. We know which neighborhoods send us which problems, and we stock the parts to match.
Trusted Brands We Service in Tustin
We install and repair shingle roofs using manufacturer-recognized brands including GAF, CertainTeed, and Owens Corning. For Tustin homeowners, that matters in a specific way: the next repair crew that works on your roof will be able to identify what’s up there, and the product warranty stays intact when repairs follow manufacturer specs. We keep common flashing, underlayment, and shingle color matches local to Tustin so a smaller repair does not stall waiting on a shipped part.
Common Roof Repair Problems We See in Tustin Homes
- Dead 30-lb felt under visibly sound concrete tile. In Tustin Ranch, late-1980s and early-1990s tile roofs often look cosmetically intact while the felt underlayment has dried, cracked, and stopped shedding water. The first sign is a leak after a hard rain, not a broken tile. The fix is underlayment replacement, not a tile patch.
- Santa Ana wind damage that surfaces months later. Fall and winter northeast winds lift tile edges, blow off ridge caps, and drive debris into valleys. We see homeowners in the spring with ceiling stains from a leak that actually opened in October. Annual post-wind inspections catch this before the rain does.
- Flashings at Old Town chimneys and side walls. Pre-WWII bungalows in Old Town Tustin have original chimney brick and wood siding that move differently than modern framing. Step flashing ages out, and the repair often reveals board sheathing that needs evaluation before new metal goes down.
- Vent boot and pipe-jack deterioration in exposed east-facing roofs. The inland sun and Santa Ana wind combined wear rubber boots faster on elevations that face the wind corridor. We replace them with fresh boots and proper sealant, then verify the surrounding shingles or tiles are still holding.
Pricing for Roof Repair in Tustin, CA
Targeted roof repair in Tustin runs from $350 to $900 for small jobs: a vent boot replacement, a short section of flashing, a few tiles reset, or a flat roof seam patch. Mid-size repairs such as valley metal replacement, chimney flashing rebuilds, or decking patch-and-reseal land between $900 and $1,800. Larger repairs like full underlayment replacement on a Tustin Ranch tile roof or extensive decking replacement in Old Town can run $3,000 to $9,000 depending on the square footage and what the tear-off reveals. Every job starts with a free written estimate. Call (743) 200-8347 and we will put the price on paper before you decide anything.
We Also Serve Cities Near Tustin
If you’re outside Tustin, our crews also cover Tustin neighbors including Santa Ana, Orange, Irvine, and Villa Park. Same written pricing, same badge-at-the-door standard, same 365-Day Done Right Promise on every repair.
Serving Tustin, CA - Our Local Coverage Area
We’re based in the Tustin 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 Tustin
Because the waterproofing layer under your tiles, the original 30-lb felt, has aged out. Tustin Ranch homes built in the late 1980s and early 1990s are now hitting the point where that felt has dried and cracked from inland heat cycles. The tiles above look fine because they were never the waterproof layer, they’re the wear surface. The felt underneath is what sheds water, and when it’s dead, water gets through to the deck. Call (743) 200-8347 for an inspection and we will show you the felt in the areas we can access, not just the tiles.
Tustin sits directly in the Santa Ana wind corridor, so fall and winter events routinely exceed 40 to 60 mph. Those winds lift unsealed tile edges, strip ridge caps, and pack debris into valleys and penetrations. The damage is frequently invisible from the ground. What starts as a wind-lifted tile edge in October becomes a ceiling stain in February when the first hard winter rain arrives. We recommend post-wind inspections in Tustin every fall, before the rains come.
In Old Town’s pre-WWII bungalows, what starts as a simple flashing repair often opens onto aging board sheathing and original rafter sizing. That means the job can shift from a $600 flashing fix to a structural evaluation and decking replacement once we see what’s under the old material. We handle it by inspecting first, writing allowances into the contract, and pricing any surprise in writing before we touch the newly exposed area. Call (743) 200-8347 for an honest assessment of your bungalow’s roof condition.
Yes. Ask for the same scope in writing from both companies, including what happens if decking replacement is needed once the old material is opened up. Our written price includes allowances for hidden decking and structural work, so you see the realistic worst-case number up front. A bid that only covers visible damage will look cheaper and then change once the roof is opened. We write the full range into the contract from day one.
Architectural shingles from GAF, CertainTeed, and Owens Corning are rated for high-wind zones, but only when they are installed correctly: proper nail pattern, correct overhang, sealed edges, and solid decking beneath. In Tustin’s Santa Ana corridor, wind-rated installation matters more than brand name. A mid-grade architectural shingle nailed correctly will outperform a premium shingle slapped down fast. We spec and install to the wind zone, not just the warranty sheet.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Tustin since 2000.