All materials
Low-Slope & Flat (TPO / Modified)
Flat and low-slope sections don't take shingle — they need a membrane or modified bitumen system. Common on screened porches, room additions, and small commercial. We do TPO membrane, modified bitumen, and EPDM as the job calls for.
Lifespan20-30 yrs
Cost tier$$$$
WeightLight
Best forFlat porches, room additions, small commercial, low-slope tie-ins on residential
✓ What's good
The pros.
- Only material that works on flat roofs
- TPO reflects heat — energy savings
- 20-30 year typical lifespan with proper install
- Repairable in place — no full tear-off for most leaks
! Honest trade-offs
The cons.
- Not for high-slope — a different system entirely
- Punctures from foot traffic are the main failure mode
- Requires specialist install (heat-weld for TPO)
Manufacturers for low-slope.
The names we trust on the trailer. Have a preference? Tell us and we'll spec it.
TPO (white membrane)
Modified bitumen (torch-down)
EPDM (rubber)
How low-slope
goes on a Birmingham home.
Step-by-step. Most jobs run 1-3 days on the roof depending on size, pitch, and weather.
01
Inspect existing low-slope assembly — tear off or recover per condition
02
Inspect substrate, replace any rotted decking
03
Cover-board insulation if specified
04
TPO membrane heat-welded at all seams, or modified bitumen torch-down
05
Flashings and edge details specific to the system
06
Pressure-test seams before final sign-off