What class is a TPO roof?
Fire-Rated, Class A – Both TPO and EPDM membranes are Class A fire-resistant. During the production process, the manufacturer adds fire retardant chemicals to the composition of the material.
Is TPO Class B?
PVC and TPO products are both available with a Class A rating, although TPO is the most common commercial roof.
What is EPDM and TPO?
TPO is a blend of polypropylene and ethylene-propylene rubber. EPDM stands for Ethylene Propylene Diene Monomer. It is a synthetic rubber derived from oil and natural gas (ethylene propylene).
What is Firestone EPDM?
Firestone EPDM is a long-term flat roof waterproofing solution with a low life cycle cost. ENVIRONMENTALLY FRIENDLY. Limited environmental impact during the manufacturing process and throughout use.
What is a Class C roof?
• Class C roof coverings, which are effective against light fire test exposures. Under such exposures, the roof coverings afford a degree of fire protection to the roof deck, do not slip from position, and are not expected to produce flying brands.
What makes a roof Class A?
Class A materials include flat or barrel-shaped roof tiles, fiberglass asphalt composition shingles, and metal roofs (i.e., steel or copper). Fire-retardant pressure-treated shakes and shingles are the most common Class B roofing material.
How do you know if you have EPDM or TPO?
An EDPM rubber roof will be very slippery when wet, while a TPO roof is not. TPO is also very glossy while EPDM is not. The texture may also give some clues as to what type of roof is on your RV or camper. EPDM is very smooth, while TPO may be slightly bumpy, similar to an orange peel.
How can you tell the difference between TPO and PVC roofing?
PVC vs. TPO – Performance Comparison
| Comparison Metric | PVC | TPO |
|---|---|---|
| Composition | Polyvinyl Chloride | Thermoplastic Polyolefin |
| Years in Production as Roofing Material | 60+ years with several reformulations | 30+ years with multiple reformulations |
| Roof Temperature Impact | Cooling | Cooling |
| Membrane Thickness | From .036 to .090 | From .045 to .080 |
How thick is Firestone rubber roofing?
Firestone RubberCover EPDM is a highly durable flat roofing material and is available in 2 thicknesses: 045 grade (1.14mm) and 060 grade (1.52mm).
What is a Class B roof?
Class B roof assemblies are those that are effective against moderate fire-test exposure. Class B roof assemblies and roof coverings shall be listed and identified as Class B by an approved testing agency.
What is a Class A and Class B roof?
This standard includes three classes of fire exposure: • Class A roof coverings, which are effective against severe fire test exposures • Class B roof coverings, which are effective against moderate fire test exposures • Class C roof coverings, which are effective against light fire test exposures.