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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 Diamond Heights, Los Angeles and the Bay Area. 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

DIAMOND HEIGHTS, CA
Two Plies, Welded Seams, No Guesswork.
Torch down roofing in Diamond Heights 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 Diamond Heights, Tujunga, Shadow Hills, Lake View Terrace and the northeast city.
Diamond Heights 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 Diamond Heights, Tujunga, Shadow Hills, Lake View Terrace, La Crescenta, Sylmar and the rest of the northeast city. 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 DIAMOND HEIGHTS, CA
Flat roofs in Diamond Heights fail at the laps and the details, which is why we install torch down in two plies with every seam heat-welded. Marine air keeps a flat roof damp into the morning, so drainage and a clean cap sheet matter more here than anywhere.
Why it outlasts patch-on-patch asphalt:
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.
Access matters too: a roof you can only reach by ladder and bucket takes longer than one with a loading zone.
A cut-up roof with ten curbs costs more per square than an open one, because the detailing is the work.
We install and repair torch down roofs throughout Diamond Heights and the surrounding San Francisco County communities, including Glen Park, Noe Valley and Twin Peaks.
We work on Diamond Heights roofs most weeks, and the pattern is consistent: nothing dries quickly here, so a small leak stays wet. We are 336 miles northwest of Diamond Heights; crews pass through most days anyway.
We know Glen Park, Noe Valley and Twin Peaks as well as we know Diamond Heights.
Dry-season work books up fast, so the calendar tightens once the first storm forecast lands. We will tell you if the roof has five years left, because that is also useful to know.
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.
The estimate is free. Call (818) 275-0921 and we will measure your Diamond Heights roof, check the deck, laps and drains, and tell you plainly whether coating is the right call.
Ridge venting goes in where the roof line allows it, with proper intake at the eaves.
A roof is a system. The membrane or shingle gets the attention, but the underlayment, the fasteners, the edge metal and the ventilation decide whether it reaches its warranty.
The questions we hear most in Diamond Heights are about price, timing and whether a repair will hold. We answer all three before you commit, and we put the answers in writing.
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 Diamond Heights.
CLEAR ANSWERS. LOCAL EXPERTISE.
DIAMOND HEIGHTS, CA TORCH DOWN ROOFING
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 Diamond Heights property, measure it and put a detailed number in writing before anything is booked.
Installed to spec, twenty years and up, with a manufacturer warranty of 10, 20 or 25 years depending on the system.
For most flat and low-slope roofs in Diamond Heights, yes. Two plies of modified bitumen with heat-welded seams handle ponding and UV far better than patching.
We do. Permits and inspections go through the local building department and we handle the paperwork rather than leaving it to you.
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.
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.
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.
Yes. Panels are detached and reset on a schedule that matches the roofing crew, and the penetrations are re-flashed properly when they go back.
We work the same streets around Diamond Heights. If you are closer to one of these, the crew is already there most weeks:
We cover Glen Park, Noe Valley, Twin Peaks, Castro and Bernal Heights from the same yard as Diamond Heights. No travel surcharge between them.