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Our 2-ply Polyfresko torch down roofing systems provide long-lasting, waterproof protection for flat and low-slope roofs. Designed for durability and performance, this system is ideal for residential, multi-family, HOA and commercial buildings across Monrovia, Los Angeles and Southern California. Waterproof protection, durable and long lasting, UV and heat resistant, ideal for flat roofs, professional installation.
RESIDENTIAL HOMES
APARTMENTS & HOAs
COMMERCIAL BUILDINGS
LOW-SLOPE ROOFS

MONROVIA, CA
Two Plies, Welded Seams, No Guesswork.
Torch down roofing in Monrovia is modified bitumen, installed in two plies and heat-welded as it goes down: a base sheet torched to the prepared deck or cover board, then a white Polyfresko cap sheet over it. The seams fuse instead of relying on adhesive, which is why the system holds up on flat and low-slope roofs that see standing water.
All American Roof Repair & Commercial Roofing installs and repairs torch down on houses with flat sections, apartment buildings, HOA property, offices and light industrial across Monrovia, Tujunga, Shadow Hills, Lake View Terrace and the northeast San Fernando Valley.
Monrovia sits in a bowl at the foot of the Verdugo and San Gabriel Mountains and it bakes. A dark flat roof here runs far hotter than the air, the daily swing works every lap, and the fall winds drive grit across the surface. Then the rain arrives in short, heavy bursts and finds whatever the summer loosened: a split lap, a lifted edge, a drain that has not been cleared since the last storm.
The old roof comes off and any soft decking is replaced before a new sheet touches it. You see the bad bays before they are covered.
Where the building wants R-value, polyiso goes down; otherwise a cover board gives the torch a sound, even surface.
The modified bitumen base ply is torched and rolled so the whole sheet bonds, not just the edges.
The white cap ply goes over it, seams welded and probed. White means the roof reflects heat instead of storing it.
Curbs, pipes, parapets, edge metal and drains are detailed last, because that is where flat roofs actually leak.
Straight talk: torch down is hot work. We carry the permits and insurance for it, run a fire watch and keep extinguishers on the roof. Where open flame is not appropriate — a wood deck in poor condition, an occupied building with tight access — we quote a cold-applied or coating system instead and say why.
If the roof is flat or low-slope, torch down is on the table:
Additions, garages and mid-century flat roofs where shingles were never the answer.
Staged section by section so tenants stay put and the lot stays usable.
Offices, retail and light industrial, scheduled around your hours.
Shallow pitches where water moves slowly and details decide everything.
The same roof, cracked and ponding, then two plies down with a white cap sheet.


Installed to spec, a two-ply torch down roof runs twenty years and up, and the manufacturer warranty is written for 10, 20 or 25 years depending on the system we specify. The paperwork is registered in your name, not left in a folder. We check the roof after the first rainy season so small things stay small.
Most calls start with a leak over one room. We trace it to the source — a split lap, a failed pipe flashing, a drain that never cleared — repair it and photograph what we found. Two things keep a flat roof going: clear the drains before the rains, and have the flashings looked at once a year.
We install and repair torch down throughout Monrovia, Tujunga, Shadow Hills, Lake View Terrace, La Crescenta, Sylmar and the rest of the northeast San Fernando Valley. Flat roof work is dry-weather work, so the calendar tightens once the rain starts — call early.
We’ll measure the roof, check the deck, drains and flashings, and tell you whether torch down is the right system.
TORCH DOWN ROOFING MONROVIA, CA
Leaks over a tenant space in Monrovia almost always trace back to a lap, a flashing or a drain rather than the field of the roof. Up against the hills the wind gets at the edges first, so the perimeter metal and the first course decide how long the roof holds.
If the insulation is wet, no membrane fixes that - it comes off first, whatever it costs.
Installed to spec, a two-ply torch down roof runs twenty years and up. The manufacturer warranty is written for 10, 20 or 25 years depending on the system, and we register the paperwork in your name.
We install and repair torch down roofs throughout Monrovia and the surrounding Los Angeles County communities, including Duarte, Bradbury and Arcadia.
Price follows square footage, how many layers come off, how much decking needs replacing and how many penetrations the roof carries.
We price deck repair per sheet so there is no surprise number halfway through the tear-off.
Why it outlasts patch-on-patch asphalt:
The estimate is free. Call (818) 275-0921 and we will measure your Monrovia roof, check the deck, laps and drains, and tell you plainly whether coating is the right call.
Drone shots cover the steep sections, and the rest is checked on foot.
What a roof faces in Monrovia is specific, not generic: gusts funnel down the canyons and lift anything not fastened right. Our shop sits about 15 miles northeast of Monrovia, so a crew is on site the same morning.
Duarte, Bradbury and Arcadia are on the same route, which keeps follow-ups easy.
A roof opened in winter costs more and risks more, so we plan around the forecast. The inspection is free, and so is the second opinion if you already have a quote.
The questions we hear most in Monrovia are about price, timing and whether a repair will hold. We answer all three before you commit, and we put the answers in writing.
Price follows the roof, not a rate card: access, pitch, material, how many layers come off and what the deck looks like underneath. We measure in person, show you photos and put the number in writing before anything is booked.
When the crew leaves, the debris leaves with them: magnet passes morning and evening, gutters cleared, driveway swept. You get photos of the finished work and the warranty paperwork registered in your name.
FREQUENTLY ASKED
Find answers to common questions about torch down roofing in Monrovia.
CLEAR ANSWERS. LOCAL EXPERTISE.
MONROVIA, CA TORCH DOWN ROOFING
We do. Permits and inspections go through the local building department and we handle the paperwork rather than leaving it to you.
For most flat and low-slope roofs in Monrovia, yes. Two plies of modified bitumen with heat-welded seams handle ponding and UV far better than patching.
Most single-family roofs in Monrovia are done in two to four days once materials are on site. Larger or steeper roofs, or jobs with deck repairs, run longer and we say so up front.
You get the manufacturer warranty on the materials and ours on the workmanship, both in writing. The paperwork is registered for you and transfers if you sell.
Yes, licensed, bonded and insured, with workers' compensation on every crew. Certificates are available before work starts.
Installed to spec, twenty years and up, with a manufacturer warranty of 10, 20 or 25 years depending on the system.
We carry the permits and insurance for hot work, run a fire watch and keep extinguishers on the roof. Where open flame is not appropriate we quote a cold-applied or coating system instead.
A modified bitumen base sheet torched to the deck or cover board, with a white Polyfresko cap sheet over it. The white surface reflects heat instead of holding it.
Monrovia sits next to these, and we cover all of them from the same trucks:
We cover Duarte, Bradbury, Arcadia, Sierra Madre and Temple City from the same yard as Monrovia. Ask about the city you are actually in — we probably work it.