Flat and Low-Slope Roof Repair
Rowhouse roofs, porch roofs and additions. Flat roofs fail at seams and drains, so that is where we start.
- Seam, drain and edge repair
- Rubber, TPO and PVC membrane work
- Ponding water and blister fixes
- Full flat roof replacement when it is past repair
Flat roofs are not really flat. They are built to drain slowly, so anything that blocks or opens the surface turns into a leak.
Signs you may need this
- Water that sits for days after rain
- Bubbles or blisters in the surface
- Seams lifting or opening
- Cracks around a drain or a pipe
- A stain inside on a porch ceiling or under an addition
How the visit goes
1. Identify the material
Rubber, TPO, rolled asphalt or an older built-up roof each get repaired differently. The wrong patch material peels back off.
2. Look at where water goes
Drains, edges and low spots. Ponding water finds every weak seam.
3. Check the penetrations
Vents, pipes, skylights and the wall edge where the flat roof meets the house.
4. Press for soft spots
Soft areas mean the insulation or wood underneath is wet. That part has to come out, not get covered over.
What changes the price
We do not post prices, because a roof nobody has looked at cannot be priced. These are the things that make the job bigger or smaller.
- • How large the failing area is
- • Whether the insulation or wood underneath is wet
- • The existing material and how old it is
- • Drain work or adding a new drain
- • Getting equipment and material up to the roof
Questions homeowners ask
- Can a flat roof be patched?
- Yes, when the rest of the surface is sound and the material can be bonded to. A roof that is failing all over needs a plan, not a patch.
- Is ponding water normal?
- A little water after a storm is normal. Water still sitting days later is not, and that is where leaks start.
- Do flat roofs need coating?
- Some systems take a coating and it can help. A coating over wet insulation just traps the problem, so the roof gets checked first.
- How long will the repair last?
- That depends on the material, the age and how much of the roof is tired. The roofer will tell you plainly whether you are buying years or buying time.
Straight talk: We do not promise a number of years on a repair to an old flat roof. Where the honest answer is that it is near the end, that is what you will hear.