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San Dimas Torch Down Roofing
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RESIDENTIAL • COMMERCIAL • ALL ROOF TYPES
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& INSURED - FAST
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BUILT FORSouthern California
Professional torch down roofing — stronger roofs for a safer tomorrow
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 San Dimas, Los Angeles and Southern California. Waterproof protection, durable and long lasting, UV and heat resistant, ideal for flat roofs, professional installation.
IDEAL FOR MULTIPLE PROPERTY TYPES
RESIDENTIAL HOMES
APARTMENTS & HOAs
COMMERCIAL BUILDINGS
LOW-SLOPE ROOFS
BEFORE & AFTER
SAN DIMAS, CA
Torch Down Roofing
Two Plies, Welded Seams, No Guesswork.
Torch down roofing in San Dimas 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 San Dimas, Tujunga, Shadow Hills, Lake View Terrace and the northeast San Fernando Valley.
Why Flat Roofs in San Dimas Fail
San Dimas 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.
How We Install It
Tear-off and deck check
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.
Insulation or cover board
Where the building wants R-value, polyiso goes down; otherwise a cover board gives the torch a sound, even surface.
Base sheet
The modified bitumen base ply is torched and rolled so the whole sheet bonds, not just the edges.
Polyfresko cap sheet
The white cap ply goes over it, seams welded and probed. White means the roof reflects heat instead of storing it.
Flashings and drains
Curbs, pipes, parapets, edge metal and drains are detailed last, because that is where flat roofs actually leak.
Torch Down vs the Alternatives
- Against a patch. Patching buys months. A two-ply system is a roof, with a manufacturer warranty behind it.
- Against TPO. Both work on flat roofs. Torch down suits smaller, cut-up roofs and buildings with lots of penetrations; TPO suits wide open spans.
- Against a coating. A coating renews a sound roof. If the deck or insulation is wet, torch down replaces it instead of sealing the problem in.
- Against built-up. No kettle, no gravel, and a white surface rather than black asphalt cooking all afternoon.
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.
What We Roof in San Dimas
If the roof is flat or low-slope, torch down is on the table:
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Homes with Flat Sections
Additions, garages and mid-century flat roofs where shingles were never the answer.
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Apartments & HOAs
Staged section by section so tenants stay put and the lot stays usable.
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Commercial Buildings
Offices, retail and light industrial, scheduled around your hours.
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Low-Slope Roofs
Shallow pitches where water moves slowly and details decide everything.
Before and After
The same roof, cracked and ponding, then two plies down with a white cap sheet.
Warranty and Lifespan
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.
Repairs and Maintenance
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.
Serving San Dimas and the Foothills
We install and repair torch down throughout San Dimas, 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 SAN DIMAS, CA
THE COMPLETE GUIDE TO
TORCH DOWN ROOFING IN SAN DIMAS
A torch down roof is two plies of modified bitumen, welded as they go down, and on a flat San Dimas roof that is what keeps water out. 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.
Where the money goes
We price deck repair per sheet so there is no surprise number halfway through the tear-off.
Price follows square footage, how many layers come off, how much decking needs replacing and how many penetrations the roof carries.
The San Dimas version of this job
Roof life in San Dimas is decided by exposure more than brand, and ridges here catch the first gust of every Santa Ana. From the yard it is roughly 25 miles east to San Dimas - no travel surcharge, no week-long wait.
La Verne, Glendora and Pomona are on the same route, which keeps follow-ups easy.
- We photograph every penetration before and after, so the file shows the work.
- Skylights are flashed new rather than reused, because that is where the next leak starts.
- Solar gets detached and reset by a licensed crew, not improvised around.
- Where an HOA sets colour or material rules, we match the approved list before the job is quoted.
- Material is delivered the morning of the job, not left on the driveway for a week.
Summer is for planned work; winter is for emergencies nobody planned. We will tell you if the roof has five years left, because that is also useful to know.
Our habits on site
The quote lists materials and labour separately so you can see what you are buying.
- Any rot found under the old layers is swapped before anything new goes down.
- Change orders are discussed before anything is done, not billed afterwards.
- Rake and eave metal is new on every job; reusing bent metal is false economy.
- Moisture readings go in the report where a leak is suspected but not obvious.
Serving San Dimas and nearby
We install and repair torch down roofs throughout San Dimas and the surrounding Los Angeles County communities, including La Verne, Glendora and Pomona.
When torch down is the wrong call
If the roof is sound and simply weathered, a silicone coating is cheaper than a tear-off and we will tell you so.
What torch down does better
Why it outlasts patch-on-patch asphalt:
- It handles ponding better than a single-layer repair ever will
- Two plies mean a second line of defence over the whole roof, not just the patches
- Heat-welded seams fuse the plies instead of relying on adhesive
- It suits cut-up roofs with curbs, pipes and skylights
- Manufacturer warranties run 10, 20 or 25 years depending on the system
How the job runs
- Free inspection with photos of every penetration and drain
- Written scope and price before anything is booked
- Tear-off and deck repair, with bad bays shown to you
- Two plies down, welds probed as the crew goes
- Flashings, drains and edge metal detailed
- Daily clean-up and a final walk with you on the roof
What you can expect from it
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.
Layer by layer
- Roof deck, repaired where it is soft
- Insulation or cover board, depending on what the building needs
- Modified bitumen base sheet, torched and rolled so the whole sheet bonds
- White Polyfresko cap sheet, seams welded and probed
- Edge metal, curb and pipe flashings detailed last
Get a number in writing
The estimate is free. Call (818) 275-0921 and we will measure your San Dimas roof, check the deck, laps and drains, and tell you plainly whether coating is the right call.
What this costs in San Dimas, honestly
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.
We do not use subcontract crews we have never met. The people on your San Dimas roof are the people we train, and they carry our workers' compensation.
Timing the work in San Dimas
The questions we hear most in San Dimas are about price, timing and whether a repair will hold. We answer all three before you commit, and we put the answers in writing.
FREQUENTLY ASKED
QUESTIONS
Find answers to common questions about torch down roofing in San Dimas.
CLEAR ANSWERS. LOCAL EXPERTISE.
SAN DIMAS, CA TORCH DOWN ROOFING
What happens to the old roof and the mess?
Tear-off debris leaves the same day. Driveways are swept, gutters cleared and a magnet pass runs morning and evening, which matters on a street with kids and pets.
How much does a new roof cost in San Dimas?
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 San Dimas property, measure it and put a detailed number in writing before anything is booked.
How long does a torch down roof last?
Installed to spec, twenty years and up, with a manufacturer warranty of 10, 20 or 25 years depending on the system.
Are you licensed and insured?
Yes, licensed, bonded and insured, with workers' compensation on every crew. Certificates are available before work starts.
What is the 2-ply Polyfresko system?
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.
Is torch down right for a flat roof in San Dimas?
For most flat and low-slope roofs in San Dimas, yes. Two plies of modified bitumen with heat-welded seams handle ponding and UV far better than patching.
Do you give free estimates in San Dimas?
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.
Is the torch safe around my San Dimas building?
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.
San Dimas Torch Down Roofing — and the five closest cities
Just outside San Dimas, we work in:
- La Verne Torch Down Roofing 2 mi
- Glendora Torch Down Roofing 4 mi
- Pomona Torch Down Roofing 5 mi
- Covina Torch Down Roofing 5 mi
- Claremont Torch Down Roofing 5 mi
We cover La Verne, Glendora, Pomona, Covina and Claremont from the same yard as San Dimas. Ask about the city you are actually in — we probably work it.
