The short answer
TPO is white and reflective with heat welded seams, which cuts cooling load meaningfully in Texas. EPDM is black rubber, extremely durable, with adhered seams. Both run 20 to 30 years with maintenance.
Specifications
| Factor | Detail |
|---|---|
| Typical cost | $35,000 to $70,000+ |
| Service life | 20 to 30 years |
| TPO seams | Heat welded, very strong |
| EPDM seams | Adhered, the common failure point |
| Reflectivity | TPO high, EPDM low |
| Best for Texas | Usually TPO |
Where it performs
- TPO reflectivity lowers cooling load in San Antonio summers
- Welded TPO seams are stronger than adhered
- EPDM is extremely puncture resistant
- Both are repairable rather than replace only
- Maintenance programs extend service life substantially
The trade-offs
- Drainage design matters more than membrane choice
- Ponding water accelerates failure on both
- Rooftop HVAC traffic damages flashing over time
- Hail bruising on membrane is harder to spot than on shingle
What we install
On commercial roofs, seams, curb flashing and drainage cause nearly all the leaks. That is where our assessments and maintenance programs focus.
Other materials
Compare directly: roofing comparisons · cost guide · glossary
