Fullerton Roof Pros provides professional flat and low-slope roofing in Fullerton, CA for residential and commercial properties across north Orange County. Almost every period house here has grown a flat roof at some point. A porch got enclosed in 1958, a back bedroom went on in 1963, a carport became a laundry room. Those small low-slope planes are where most of the leaks in this housing stock live.
They leak for the same two reasons every time. First, they were built over the existing 1x board decking with a hot-mopped built-up roof, and board decking moves, so the felts crack along every board joint. Second, the transition where the flat plane meets the original pitched roof or the stucco wall was flashed as an afterthought, and that junction takes water from the whole slope above it.
Membrane choice matters less than people think on a two-hundred-square-foot plane. What matters is a new solid deck and a properly built transition. We sheet over the boards with plywood, taper the drainage with tapered insulation or sleepers so water actually leaves, and build the wall junction as a base-flashed detail carried up under the wall covering rather than sealed at the surface.
For the covering itself, self-adhered SBS modified bitumen in two plies with a granulated cap is our default on residential additions. It is quiet to install, needs no torch near a seventy-year-old wall cavity, and it tolerates the movement these decks still have. Torch-applied cap sheet has its place on larger clean decks, but not over old board framing where there is nowhere safe to put a flame.
Single-ply gets specified where it earns its place: a large uninterrupted plane, a roof that needs reflectance, a deck with almost no penetrations to detail. On a small residential addition with a wall junction, a plumbing vent and an old swamp cooler curb, a single-ply's advantages disappear into fiddly detail work and modified bitumen is simply the better buy.
Drainage is the part people skip and then pay for twice. A dead-flat plane with a half-inch ponding depth holds water for days and finds every seam it has. We shoot the plane with a level, put the fall where it can actually go rather than where the drawing wanted it, and add an overflow scupper where the addition is bounded by a parapet so a blocked drain does not turn the roof into a tank.
Our licensed and insured team brings the right materials and equipment to every job — spaced 1x6 skip sheathing, two-piece mission barrel tile, straight 1x8 shiplap decking, self-adhered SBS modified bitumen underlayment, mortar-set hip and ridge tile, flat-lock soldered copper pans — and backs the work with a written workmanship warranty. We serve Fullerton and nearby communities including Brea, Placentia, La Habra, Buena Park.
What We Handle
Everything our flat and low-slope roofing in Fullerton covers
One crew, one point of contact, and the full range of flat and low-slope roofing work in Fullerton, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- flat roof repair
- low slope roofing
- modified bitumen
- torch down roofing
- self-adhered membrane
- built-up roof
- cap sheet roofing
- flat roof replacement
- porch roof repair
- addition roof
- TPO roofing
- commercial flat roof
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Fullerton services.
Materials, equipment and how we do flat and low-slope roofing
The difference between flat and low-slope roofing that lasts and flat and low-slope roofing that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with spaced 1x6 skip sheathing, two-piece mission barrel tile, straight 1x8 shiplap decking, self-adhered SBS modified bitumen underlayment, spec them to the job instead of to the invoice, and write the material grades into the free estimate so you know exactly what you are buying.
Every Fullerton job runs the same way: site walk and measurements, written scope and fixed price, protection of the surrounding area, then the work itself with a daily clean-up. Years of roofing work in north Orange County means we have already met whatever your property is going to throw at us — awkward access, older construction, an HOA with opinions.
Where we do flat and low-slope roofing outside Fullerton
Fullerton Roof Pros covers Fullerton and the surrounding communities of north Orange County. Crews run out to the same nearby cities every week, so an out-of-town job does not mean an out-of-town price.
- Flat and Low-Slope Roofing in Brea, CA — Orange County, population 47,325
- Flat and Low-Slope Roofing in Placentia, CA — Orange County, population 51,824
- Flat and Low-Slope Roofing in La Habra, CA — Orange County, population 63,097
- Flat and Low-Slope Roofing in Buena Park, CA — Orange County, population 84,034
- Flat and Low-Slope Roofing in Yorba Linda, CA — Orange County, population 68,336
- Flat and Low-Slope Roofing in Villa Park, CA — Orange County, population 5,843
Start on the Fullerton Roof Pros homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Fullerton Chooses Fullerton Roof Pros
- ✓We open a plane and photograph the deck before quoting, so the number is not a guess
- ✓Roof price and re-deck price are separate lines, with a per-sheet figure written down
- ✓Period profiles matched from architectural salvage before new tile is ever specified
- ✓Open-eave houses get roof-edge intake ventilation, not soffit vents that do not exist
The standards behind flat and low-slope roofing
Quality here is not a matter of opinion — it is written down. The flat and low-slope roofing work we do in Fullerton follows published industry standards: NRCA publishes the Roofing Manual, the industry's reference for details and slope minimums, and Asphalt Roofing Manufacturers Association sets the shingle application and ventilation guidance the warranties reference. If a contractor cannot tell you which standard a detail comes from, that is worth asking about before you sign.
Every flat and low-slope roofing project in Fullerton gets the same attention, whether it is a single room or a full commercial job. We show up on schedule, keep the site clean, and stand behind the work — the estimate is free and there is no pressure.
Ready to get started? Call (844) 511-2320 for a free flat and low-slope roofing free estimate in Fullerton, or request a quote and we'll get right back to you.