Fullerton Roof Pros provides professional commercial roofing in Fullerton, CA for residential and commercial properties across north Orange County. Downtown Fullerton and the older commercial strips along Harbor and Commonwealth are largely 1920s and 1930s masonry buildings with brick parapets and low-slope roofs behind them. On those buildings the membrane is rarely the problem. The parapet is.
A brick parapet is a wall with weather on both sides and a roof tied into it. Water gets in from the top through a failed coping, from the face through open mortar joints, and from the roof side wherever base flashing was surface-mounted and caulked. It then travels down inside the wall and shows up several feet in from it, which is why these buildings get new membranes and keep leaking.
The detail that fixes it is a through-wall or reglet-let-in counterflashing over a properly terminated base flashing, plus a coping that actually sheds outward and carries a drip on both faces. On unreinforced masonry we check what the parapet is doing structurally before anything else, because bracing and anchorage work has to happen first, and finding it afterwards means opening a roof you have just paid to replace.
Drainage on these older buildings is usually interior drains and scuppers rather than gutters, and the drains are often original cast iron with a strainer somebody removed in 1974. We scope the leaders where access allows, replace clamping rings and sumps, add overflow scuppers where the parapet turns the roof into a basin, and set the tapered insulation so water reaches the drain rather than pooling three feet from it.
Membrane selection follows the building's traffic and its rooftop plant rather than our preference. Mechanically attached or adhered TPO where there is a clean field and reflectance is wanted, two-ply modified bitumen where foot traffic is heavy and the roof is crowded with curbs and penetrations, and a coating where a sound existing roof simply needs another decade before a tenant improvement forces the issue.
We work around occupied tenants and we plan for it rather than improvise: staging and material handling agreed in advance, odour and noise windows discussed with the property manager, night and weekend phasing where a restaurant or a medical suite cannot take dust, and a written scope broken out by roof area so a multi-building owner can approve the work in whatever order suits the budget this year.
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 commercial roofing in Fullerton covers
One crew, one point of contact, and the full range of commercial roofing work in Fullerton, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- commercial roofing contractor
- commercial roof replacement
- parapet flashing
- through-wall counterflashing
- built-up roof replacement
- TPO membrane
- roof drain repair
- brick parapet repair
- commercial roof maintenance
- low slope commercial roofing
- warehouse roofing
- commercial roof coating
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 commercial roofing
The difference between commercial roofing that lasts and commercial 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 commercial 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.
- Commercial Roofing in Brea, CA — Orange County, population 47,325
- Commercial Roofing in Placentia, CA — Orange County, population 51,824
- Commercial Roofing in La Habra, CA — Orange County, population 63,097
- Commercial Roofing in Buena Park, CA — Orange County, population 84,034
- Commercial Roofing in Yorba Linda, CA — Orange County, population 68,336
- Commercial 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 commercial roofing
Quality here is not a matter of opinion — it is written down. The commercial 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 commercial 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 commercial roofing free estimate in Fullerton, or request a quote and we'll get right back to you.