
Watertight Exteriors is a certified Duro-Last installer. Duro-Last roofing systems are custom prefabricated at the factory to the exact dimensions of your roof, with seams welded under controlled conditions rather than out on the job site.
Benefits of a Prefabricated Duro-Last Roof
- Up to 85% of seaming is completed in the factory, not on your roof
- Faster installation means less disruption to your business
- Reflective PVC membrane helps lower energy costs
- Industry-leading material and labor warranties
- Resistant to punctures, chemicals, grease, and severe weather

Because each Duro-Last roof is fabricated off-site, the amount of labor-intensive work performed on your roof is greatly reduced — cutting installation time, cost, and the risk of on-site errors.