Architectural shingles
Metal roofing
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Repair Across Monrovia
If you’ve spotted a water stain on a ceiling in Monrovia or shingles lifting after a Santa Ana wind event, here’s the short version: roof repair in Monrovia typically runs $350 – $1,200 for targeted fixes like flashing or leak repair, and $1,500 – $4,500 when we’re re-decking sections or upgrading to fire-rated assemblies near the foothills. We respond to Monrovia calls within 24 – 48 hours for standard repairs and same-day for active leaks. Call (866) 650-8319 and we’ll schedule a roof inspection first, so you know exactly what you’re dealing with before any work is proposed.
We know Monrovia’s roofs because we work on them weekly. From the Craftsman bungalows along Myrtle in Old Town to the post-WWII tract homes east of Mayflower, the failure patterns are consistent and predictable. That matters because a roofer who knows what a 1920s wood shingle roof does after 40 years of foothill sun doesn’t waste your time or money guessing.
Why Gable Roof Repair Is Monrovia’s Preferred Roof Repair Company
Homeowners around Monrovia call us for one reason more than any other: we inspect first and recommend second. That’s not a slogan, it’s a sequence. When you call about a leak, we don’t show up to sell you a full replacement. We get on the roof, find the actual failure, and tell you what the roof genuinely needs. Repair when it makes sense, replace when it’s right.
Neil Drummond, our owner, built Gable Roof Repair around a simple observation. Most roofing companies push one manufacturer’s product because their crews are only trained on that system. We’re certified to work with GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That means when we tell a Monrovia homeowner their shingles need replacing, the recommendation is based on what their roof needs, not what we happen to stock.
We’re a full-service Roof Repair contractor, which means we also handle replacement and standalone inspections. You’re never handed off to a different crew or a different company. The estimator who walks your roof in Monrovia is the same person who walks you through the findings. For over a decade, that consistency has built trust in neighborhoods from Old Town to the northern foothills.
Styles & brands we work with






Roof Leak Repair in Monrovia
Roof Leak Repair in Monrovia usually comes down to one of three failures: deteriorated flashing at a valley or penetration, cracked or missing shingles from wind or sun damage, or failed underlayment beneath a roof that’s simply aged out. The repair itself isn’t complicated. Finding the exact entry point is. Water travels along sheathing and rafters, so the stain on your living room ceiling in 91016 might originate 15 feet away at a pipe boot or step flashing.
In Monrovia, leak repair pricing breaks down like this: a simple flashing repair or shingle replacement runs $350 – $700. A valley repair involving new underlayment and shingles runs $800 – $1,400. A trickier situation, like a leak that’s opened up rotted decking or damaged soffit material, pushes into the $1,500 – $2,800 range depending on how far the water damage spread. If you live along the northern edge of Monrovia backing the Angeles National Forest, expect the fire-rated material requirement to add roughly 15 – 20% to the shingle and underlayment line items. That’s not markup; it’s what Class A assemblies cost.
Flashing and penetration leaks
Pipe boots, chimneys, and skylights are the usual suspects on Monrovia homes built between 1940 and 1980. The rubber boot around a plumbing vent cracks from UV exposure after 8 – 12 years. The fix is a $150 – $350 job. We carry multiple boot sizes and flashing profiles on every truck that heads to Monrovia, so most of these are completed on the first visit.
Valley and transition leaks
Valleys are where two roof planes meet, and they concentrate more water than any other part of the roof. On older Monrovia bungalows, valleys often sit over skip-sheathing with no membrane underneath. Once the shingles fail, water hits that open gap directly. A proper valley repair means cutting back the shingles, installing ice and water shield, and re-shingling the transition. It’s a half-day job for a two-person crew and almost always stops the problem permanently.
Emergency Roof Repair in Monrovia
Emergency Roof Repair in Monrovia happens most frequently during two seasons: the winter rainstorms that arrive December through February, and the Santa Ana wind events that spike in October and November. Both create urgent failures, but they fail differently. Rain exposes existing weaknesses in underlayment and flashing. Wind actively tears shingles off, especially on the eastern tract homes where 20-year architectural shingles have been baking under 100°F summers for two decades.
If water is coming through your ceiling, call us first. We’ll give you immediate steps over the phone, typically tarping or interior water control. Then we schedule the actual repair as soon as the weather allows. Emergency leak repairs in Monrovia run $450 – $1,100 depending on whether the issue is isolated to a few shingles or involves structural water intrusion. A wind-damage repair involving 10 – 20 shingles and possible ridge cap replacement runs $600 – $1,400. The fire-rated underlayment requirement applies to emergency repairs too, and it’s not something you want to skip. If you’re in the foothill zone, properly installing Class A materials during an emergency means the repair won’t fail its next inspection.
Storm and wind damage
Santa Ana winds hit Monrovia’s north-facing roof slopes harder than anywhere else in the San Gabriel Valley. We regularly see ridge caps peeled back and whole sections of shingles lifted from decks near Bradbury and the canyon mouths. If shingles are lifting but not gone, the repair is relatively cheap: $350 – $700 to re-secure and seal. If wind-driven rain got underneath, the next sunny day is when the real damage starts showing up inside.
Tarp and temporary cover
When a Monrovia homeowner has an active leak and we can’t safely repair the roof until conditions improve, we install a temporary weatherproof covering. It’s not a permanent fix. It’s buying time to do the job right. Temporary cover in Monrovia runs $250 – $600, and we credit half of that back toward the repair if we do both within 30 days.
Trusted Brands We Service in Monrovia
We work with your roof’s brand, not ours. Gable Roof Repair is certified to install and repair materials from GAF, CertainTeed, Owens Corning, and IKO, among others. Why does that matter here in Monrovia? Because a 1925 Craftsman in Old Town might have a GAF architectural shingle conversion while a 1985 home near Duarte still wears its original CertainTeed stock. Matching the existing product matters for warranty continuity and appearance. We stock the common repair components for these brands, so most Monrovia repairs don’t wait on a supplier order. Seven brands, one standard of installation.
See the difference
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Before
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Before
AfterCommon Roof Repair Problems We See in Monrovia Homes
- Original wood shingle failures in Old Town. Those 1920s – 30s bungalows off Myrtle and Foothill often still carry their original cedar shingles over skip-sheathing. The shingles dry out, cup, and crack. When one fails, the sheathing underneath is usually gone too. Repair means re-decking, not patching.
- Santa Ana wind lift on eastern tract homes. The post-WWII neighborhoods east of Mayflower Avenue have asphalt shingles now hitting the 20 – 25 year mark. Dry, hot summers bake the adhesive strips. Wind gets under the edges and lifts whole courses. We re-seal where the shingle is still intact and replace where it isn’t.
- Failed valley flashing on hipped roofs. Monrovia’s Spanish Colonial Revival homes often have complex hip and valley geometries. The original galvanized flashing under those valleys is past its service life. We see rust-through at the eave line consistently on homes built before 1960.
- Inadequate attic ventilation cooking shingles from below. Monrovia summers push attic temps past 140°F. When ventilation is undersized, shingles cook from both sides and fail early. We often recommend adding ridge or soffit venting during a repair, which extends the life of the remaining shingles by years.
Pricing for Roof Repair in Monrovia, CA
Here’s what you can expect to pay for common roof repairs in Monrovia, based on jobs we’ve completed in the past 18 months:
- Shingle replacement (5 – 10 shingles): $350 – $700
- Flashing repair (chimney, step, or pipe boot): $250 – $650
- Valley repair with new underlayment: $800 – $1,400
- Leak repair with decking replacement: $1,200 – $2,800
- Fire-rated assembly upgrade on a repair section: Add 15 – 20% to the shingle and underlayment line items
These numbers shift based on roof pitch, access, and how much water damage exists once we open the roof. The range is honest, not a sales tactic. We write line-item quotes so you see exactly what each component costs. Estimates are free, and we never start a repair without written approval from you first. Call (866) 650-8319 to schedule yours.
We Also Serve Cities Near Monrovia
We handle Roof Repair in Monrovia and the surrounding foothill communities every week. Our crews regularly work in Mayflower Village, Duarte, Bradbury, and Arcadia. If you’re just outside the Monrovia city line, the same team, pricing, and inspection-first process applies. Call and ask.
Serving Monrovia, CA — Our Local Coverage Area
We’re based in the Monrovia 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 Monrovia
Yes. Homes on Monrovia’s northern edge fall under stricter fire code requirements than flatland neighbors like Arcadia or Duarte. Repairs must use Class A fire-rated shingles, underlayment, and edge details, and we maintain defensible-space clearances during the work. This isn’t optional. If we’re re-decking a section of your roof, the fire-rated assembly becomes part of the permit and inspection. It typically adds 15 – 20% to the material cost. Call (866) 650-8319 and we’ll tell you exactly what applies to your address.
It depends on the condition of the sheathing underneath. We’ve repaired original wood shingles where the decking is sound and only a small section failed. More commonly, a 1920s Craftsman off Myrtle that’s holding its original roof has widespread issues. We opened a valley leak on one recently and found skip-sheathing with no membrane, plus rusted drip edge at the eaves. That particular roof needed re-decking on the valley runs and a fire-rated upgrade, not a patch. We’ll tell you honestly whether repair is realistic or replacement is the smarter route. The inspection is standalone, so you get our assessment without any pressure.
Ask both contractors three questions: What exactly is failing and how did you determine that? What materials will you use and are they fire-rated if I’m in the foothill zone? What happens if you open the roof and find additional damage? We answer all three in writing. Our quotes are line-item, our material specs are named, and any discovery during the repair gets priced and approved by you before we proceed. If another bidder won’t do that, you’ve learned something useful. Call (866) 650-8319 for a quote built that way.
During an active leak, we aim to have a crew at your Monrovia home the same day you call, weather permitting. If we can’t safely repair immediately, we tarp the affected area to stop the water. Standard repairs in 91016 and 91017 are typically scheduled within 24 – 48 hours. Call (866) 650-8319 the moment you see water. The sooner we contain it, the less decking and drywall gets damaged.
Sometimes, and we handle it differently than most. In Monrovia’s older housing stock, what starts as a $500 flashing repair can reveal rotted decking, termite damage, or failed underlayment once we lift the shingles. When we scope your repair, we write allowances into the contract for the common discoveries we see in your neighborhood. If something unexpected surfaces, we photograph it, price it on the spot, and get your written approval before we touch it. No surprises, no change orders you didn’t authorize. Call (866) 650-8319 to schedule your inspection and get a quote that accounts for what we already know about Monrovia roofs.
Written by Neil Drummond, Owner at Gable Roof Repair, serving Monrovia and the San Gabriel Valley foothill communities.