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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Repair Across Monrovia
Roof repair in Monrovia runs $350 – $1,400 for most residential jobs, depending on whether you need a few shingles replaced or valley and flashing work after a Santa Ana wind event. We serve both 91016 and 91017, from the Craftsman bungalows around Old Town up to the foothills neighborhoods above Foothill Boulevard. Call us at (866) 942-4187 and we’ll send a crew that knows exactly what your roof is dealing with.
Our Roof Repair team works across the San Gabriel Valley daily, so we understand the split personality of Monrovia roofing. A 1920s home near Myrtle Avenue has very different needs than a 1980s tract house in the north end of town or a custom build off Canyon Boulevard. That local knowledge matters when you’re deciding whether to patch or plan a tear-off.
Why Orange County Roofing Co Is Monrovia’s Preferred Roof Repair Company
Monrovia homeowners call us because we don’t push one brand. We carry GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, which means the material we recommend is the one that fits your roof’s exposure and your budget, not the one with the highest margin for us. That matters in Monrovia, where a foothills roof above Foothill Boulevard needs a fire-rated assembly and an Old Town bungalow might need a full tear-off down to original 1920s decking.
Kurt Hensley built our repair approach around telling homeowners what their roof actually needs, even when the honest answer is less work than they expected. From a single damaged shingle to a full tear-off and replacement, one call covers it. Our inspection tells you exactly what your roof needs, nothing more. That’s why Monrovia homeowners keep our number.
We work in Monrovia weekly, so we know the streets, the housing stock, and the failure patterns. When a homeowner near Recreation Park calls about a ceiling stain, we already know to check the valley where 100°F heat has been cooking forty-year-old underlayment all summer. When someone off Highland Place calls about lifting shingles, we’re already thinking about ember-resistant detailing and Class A assembly requirements.
Styles & brands we work with






Storm Damage Roof Repair in Monrovia
Storm Damage Roof Repair in Monrovia typically runs $450 – $1,900 depending on whether we’re replacing wind-lifted shingles, repairing lifted flashing at a chimney or skylight, or addressing water that got in through a saturated underlayment. The dry Santa Ana winds don’t bring rain, but they do tear shingles, blow debris across roof surfaces, and drive embers from the Angeles National Forest into your vents. Most Monrovia storm work we do involves wind damage rather than hail or heavy rain.
After a Santa Ana event, we work our way through Monrovia neighborhoods methodically. The foothills homes north of Foothill Boulevard get checked first, because that’s where the ember exposure is real and a missing shingle tab is more than cosmetic. Flat roof patches in the commercial district near Myrtle get triaged for standing water concerns.
Wind-Lifted Shingle and Flashing Repair
A wind event can unseal shingle tabs without leaving obvious damage from the ground. We inspect the entire windward slope, lift tabs to check the seal strip, and reseal or replace as needed. Lifted flashing at gravel stops and penetrations gets new mastic and fasteners, not just a bead of sealant over the old stuff.
Post-Storm Inspections for Foothills Homes
If you’re north of Foothill Boulevard and you’ve had embers land on your roof during a red flag warning, schedule a standalone inspection. We check the vents, the valleys, and the eave lines for ember entry points. We carry Atlas and Tamko fire-rated components in our Monrovia service truck stock, so we can address vulnerabilities the same visit.
Metal Roof Repair in Monrovia
Metal Roof Repair in Monrovia for a standing seam or exposed fastener roof generally runs $400 – $1,600 for panel replacement, screw replacement, or seam re-securing. A flat-lock copper detail on an Old Town Craftsman is a different animal and we price it accordingly. The San Gabriel Valley sun is brutal on sealant and gasketed fasteners, and we see more failures at the screw lines on exposed fastener metal roofs than anywhere else in the region.
Metal roofing on Monrovia homes ranges from original copper on 1920s bungalows to modern standing seam on the newer foothills builds. The repair approach depends on the system, but the common thread is that metal roofs fail at the penetrations, the seams, and the fasteners before the panels themselves go. Our inspection tells you exactly whether your metal roof needs a repair or a recoat, and we won’t sell you a replacement if we can extend the life of the roof you have.
Seam and Fastener Failure
Exposed fastener panels on older Monrovia homes lose their neoprene washers after ten to fifteen years of 100°F-plus summers. The washers crack, water follows the screw shank in, and you see rust streaks before you see leaks. We replace screws with new gasketed fasteners and reseat the panels. On standing seam, we re-crimp and mechanically seam where wind has popped a leg.
Copper and Flat-Lock Repairs on Old Town Homes
Original copper on a 1920s Craftsman near Old Town is not a job for a crew that only does composition. The soldered flat-lock details need a torch and a roofer who’s worked on period metal before. We handle those repairs in-house, and we’ll tell you honestly if a section has reached the end of its service life or if it’s got another twenty years.
Trusted Brands We Service in Monrovia
For Monrovia homeowners, brand access means more than a logo on a shingle. We carry GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, which means we’re not steering you toward one product line because we have a sales quota. GAF, CertainTeed, and Owens Corning are the workhorses we install most often on Monrovia composition roofs. Atlas and Tamko give us fire-rated, ember-resistant assemblies for the foothills zone above Foothill Boulevard. We stock fast-turnaround parts locally for Monrovia customers, and if you need a specific shingle color or material matched, we can typically have it in hand within a day or two.
See the difference
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After
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AfterCommon Roof Repair Problems We See in Monrovia Homes
- Ember-zone vulnerabilities north of Foothill Boulevard. Homes in the foothills interface with Angeles National Forest need Class A fire-rated shingles and ember-resistant vents. Repairs that reuse standard box vents and skip fire-rated detailing fail the next time a red flag warning hits.
- Multi-layer tear-offs on Old Town bungalows. The early-1900s Craftsman and period revivals near Myrtle and Lime often carry two or three layers of original wood shingles under later composition. A patch over that stack masks rotten decking and violates code. The decking has to come off to the sheathing.
- Dried-out underlayment and valley sealant from 100°F-plus summers. The San Gabriel Valley heat bakes the peel-and-stick membrane at the valleys and around penetrations. We see sealant that’s chalked and cracked, and underlayment that’s brittle, even on roofs that are only fifteen years old. The repair leaks again within a season or two if you don’t replace the membrane, not just the shingle.
- Original wood shingle rot near Old Town and along Myrtle Avenue. Homes built before 1930 often still have original cedar shingles under the visible layer. That wood rots at the valleys and eaves, and you cannot see it from the ground. A repair has to include decking inspection at the leak point, or you’re fixing the symptom.
Pricing for Roof Repair in Monrovia, CA
A straightforward shingle replacement in Monrovia runs $350 – $650. Flashing repair around a chimney or skylight is $400 – $800. Valley rebuilds with new membrane and shingles come in at $650 – $1,400. A full tear-off repair on a bungalow with multiple layers and rotted decking north of Old Town starts around $1,500 and moves up with framing and sheathing replacement. If you’re in the foothills ember zone, Class A fire-rated materials and ember-resistant vents add $400 – $900 to the repair scope, and that’s not optional. The right material for your roof, backed by the manufacturer’s own warranty.
The honest variable in Monrovia is what’s under the shingles. A house on Highland or off Canyon that’s had one roof is predictable. A 1920s Craftsman on Lime that’s had three roofs layered isn’t. We give you a written line-item quote after a full inspection, and the price is fixed before we order materials. Call (866) 942-4187 for a free estimate. We’ll tell you the real scope, not a sales pitch.
We Also Serve Cities Near Monrovia
Our crews are in Mayflower Village, Duarte, Bradbury, and Arcadia every week, so Monrovia customers share scheduling with our existing San Gabriel Valley route. If you’re on the Monrovia border near Duarte or along Huntington Drive toward Arcadia, you’re already in our service area. Call (866) 942-4187 and we’ll get you on the schedule.
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
Because the scope is different, not because the labor rate changes. Homes north of Foothill Boulevard are in the wildfire ember zone of the Angeles National Forest, so a repair must use Class A fire-rated materials and ember-resistant vents to meet current code. That’s an added material cost of $400 – $900. Old Town bungalows have their own cost driver: multi-layer tear-offs down to the sheathing. Call (866) 942-4187 for a line-item quote on your specific home.
Put the two scopes side by side and check three things: whether the bid includes tear-off depth, whether the materials are specified by brand and fire rating, and whether the price is fixed in writing before materials are ordered. A $600 patch over two layers is not the same as a $1,900 code-compliant repair with new decking and ember-resistant vents. We give you a written scope you can hold against any other bid.
Yes, if the underlayment and sealant are spec’d for sustained 100°F-plus exposure and the windward slopes are mechanically fastened. We use peel-and-stick membranes rated for high-heat climates and we reseal tabs with adhesives that don’t chalk out in two seasons. The failures we see on Monrovia roofs are almost always from cheap sealant and skipped membrane replacement, not from the shingles themselves.
In most cases, yes. A standing seam roof with popped seams or failed fasteners can usually be re-crimped and resecured for $400 – $1,600. Exposed fastener panels with rusted screws and cracked washers get new fasteners at the seam lines. We’ll tell you honestly if a recoat or panel replacement is the better use of your money, and we won’t pitch a full replacement unless the substrate is gone.
Often, yes. When a 1920s Craftsman near Old Town has two or three layers of original wood shingles under the visible composition, you cannot patch over rotten decking and meet current code. The repair requires tearing off to the sheathing at the leak point, replacing the damaged decking, and rebuilding the membrane and shingle layers. We’ll show you the decking in person before we touch it, so you know exactly why the tear-off is necessary. Call (866) 942-4187 to schedule an inspection.
Written by Kurt Hensley, Owner at Orange County Roofing Co, serving Monrovia and the San Gabriel Valley.