Until now, I’ve aimed most of my words about RV roofing at the winner by popular choice: membrane roofing. It’s what most people call “rubber roofing.” The two most popular membrane roofing types are EPDM and TPO, with PVC taking the bronze. Dicor and Alpha Systems are the two largest OEMs, I think. 

But there is a fourth option (and a fifth, too, but we won’t worry about it yet). The fourth option is fiberglass, and it’s unofficially accepted as the best RV roofing material.

What Is an RV Fiberglass Roof Made From? 

All the membrane roofs, you see, are simply large plastic sheets, rather like fancy tarps. They are generally soft and flexible, which allows them to wrap around the compound curves of modern RV roofs, but that same softness also makes them vulnerable to tree limbs, hail, rocks, and even the hard urethane soles of shoes.