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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 Duarte, 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

DUARTE, CA
Two Plies, Welded Seams, No Guesswork.
Torch down roofing in Duarte 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 Duarte, Tujunga, Shadow Hills, Lake View Terrace and the northeast San Fernando Valley.
Duarte 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 Duarte, 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 DUARTE, CA
Leaks over a tenant space in Duarte 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.
What the system gives you on a {n} roof:
Access matters too: a roof you can only reach by ladder and bucket takes longer than one with a loading zone.
We price deck repair per sheet so there is no surprise number halfway through the tear-off.
We work on Duarte roofs most weeks, and the pattern is consistent: the slopes take the wind first and hold the afternoon sun longest. 16 miles east means a free inspection costs you nothing but an hour.
We are often working Bradbury, Monrovia and Irwindale in the same week, which keeps costs sensible.
Book in the dry months and the whole job happens on dry decking. If a repair solves it, we quote the repair instead of selling a replacement.
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 Duarte and the surrounding Los Angeles County communities, including Bradbury, Monrovia and Irwindale.
Where open flame is not appropriate, on a poor wood deck or a tight occupied building, we quote a cold-applied or coating system and say why.
You get a text when the crew is coming and a walk-through when they are done.
The estimate is free. Call (818) 275-0921 and we will measure your Duarte roof, check the deck, laps and drains, and tell you plainly whether coating is the right call.
The questions we hear most in Duarte are about price, timing and whether a repair will hold. We answer all three before you commit, and we put the answers in writing.
Cheap work shows up at the details: a flashing sealed instead of replaced, a vent reused because it was quicker, decking covered because nobody wanted the conversation. Those are the roofs we get called back to in two winters.
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 Duarte.
CLEAR ANSWERS. LOCAL EXPERTISE.
DUARTE, CA TORCH DOWN ROOFING
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.
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.
Cost depends on the size and pitch of the roof, the material you choose, how many layers come off and what the deck looks like underneath. We inspect the Duarte property, measure it and put a detailed number in writing before anything is booked.
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.
For most flat and low-slope roofs in Duarte, yes. Two plies of modified bitumen with heat-welded seams handle ponding and UV far better than patching.
Yes. The inspection and the written estimate are free, including a second opinion if you already have a quote in hand. We photograph what we find and walk you through it.
Most single-family roofs in Duarte 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.
Installed to spec, twenty years and up, with a manufacturer warranty of 10, 20 or 25 years depending on the system.
We work the same streets around Duarte. If you are closer to one of these, the crew is already there most weeks:
We cover Bradbury, Monrovia, Irwindale, Arcadia and Baldwin Park from the same yard as Duarte. We are in these every week, not occasionally.