Commercial Roofing
Commercial Roof Repair in Carlsbad & North County San Diego
A leak over a Vista business park unit rarely announces itself where it lands. Water tracks along a metal deck rib, follows a conduit, and shows up two bays over above a tenant's server rack. That is the part of commercial repair most crews get wrong: they patch the stain, not the source. We trace low-slope leaks back to the actual breach, whether it is a split seam, a failed pitch pan, or a drain that stopped draining three storms ago.
Our repair work covers the membranes that dominate North County rooftops, single-ply TPO and PVC, sprayed foam, modified bitumen, and older built-up gravel roofs. Every repair leaves you with photos of what failed and what we did, so your property manager or insurance adjuster is not taking our word for it.
When you need commercial roof repair
- Ceiling stains, drips, or bubbling drywall inside tenant spaces after rain
- Standing water that lingers more than 48 hours after a storm (ponding)
- Open or fishmouthed seams on a single-ply membrane you can see from the roof
- Cracked or bare spots on foam where the UV coating has worn through
- Blistering, alligatoring, or exposed felts on an aging built-up or mod-bit roof
- Loose or lifted flashing around HVAC curbs, skylights, parapets, or scuppers
- Backed-up or clogged roof drains and overflow scuppers
- A recent tenant complaint you need documented before your next board or owner meeting
What we do
- Walk the roof and interior to map where water enters versus where it appears
- Test suspect areas, seams, penetrations, terminations, and drains, for the true source
- Give you a written scope that separates the urgent leak from deferred wear
- Prep and clean the repair zone so the patch actually bonds to the membrane
- Match the repair method to your system (heat-weld for TPO/PVC, reinforced patch for mod-bit, recoat for foam)
- Rebuild flashing and terminations to manufacturer detail, not a caulk smear
- Clear and reseat drains so the fix does not get undone by the next ponding cycle
- Hand off a photo report of before, during, and after for your records
Roof types & materials
- Single-ply seam and puncture repair (TPO, PVC) by hot-air weld
- SPF foam repair and spot recoating with silicone or acrylic topcoat
- Modified bitumen torch or cold-applied patch and cap sheet repair
- Built-up roof flashing rebuild and gravel-embedded patch
- Flashing, pitch pan, and penetration reseal around curbs and conduit
- Drain, scupper, and overflow clearing and re-flashing
How do you find a commercial roof leak when the ceiling stain is nowhere near the roof problem?
On low-slope roofs, water enters at a breach and travels along the deck or insulation before dropping through a fastener hole or joint, so the interior stain is often bays away from the source. We inspect the roof and interior together, then test the likely entry points, seams, penetrations, and drains, rather than patching under the stain. That is why chasing the visible drip usually fails while source tracing holds.
If repairs are no longer keeping up with the leaks, these related commercial services are worth a look.
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Commercial Roof Repair questions, answered
Can you repair my roof, or does it need full replacement?
Do you work around our business hours?
Will a repair void my roof warranty?
What affects the cost of a commercial repair?
Do you provide documentation for insurance or an HOA board?
Get commercial roof repair done right
Free inspection and an honest estimate from a local North County crew.