Table of Contents
What is TPO membrane roofing?
Thermoplastic Polyolefin is a single-ply roofing membrane that is one of the fastest-growing commercial roofing systems on the market. TPO roofing systems are made up of a single layer of synthetics and reinforcing scrim that can be used to cover flat roofs.
What is a membrane roof covering?
Membrane Roofing is a roof system that creates a continuous watertight covering to protect the interior of a building. Membrane roofs are predominately used as a flat roofing system since they are watertight, which is critical where water is not shed immediately.
What is PVC roofing membrane?
PVC (polyvinyl chloride) is a single-ply white membrane used in both commercial and residential roofing. Due to the membrane being white, it reflects heat instead of absorbing it. PVC is a great option If you have a flat roof over a living space because it’ll keep the room below cooler.
What are the two types of TPO PVC thermoplastic membrane?
Thermoplastic polyolefin (TPO) and polyvinyl chloride (PVC) are two types of single-ply membranes utilized in low-slope and flat roofing systems. The two thermoplastic materials demonstrate similar physical characteristics—e.g., high strength, durability, and wind resistance.
Is PVC better than TPO?
TPO presents superior results for tear and break strengths, while PVC outperforms in chemical resistance, fire resistance, and overall cost. Restaurants or buildings with grease traps on the roof would be better served by a PVC roofing system.
How do you maintain a membrane roof?
Apply roof sealant to every every crack and apply a quality butyl roof tape to all the seam edges for maximum moisture protection.
- Remove all limbs and debris from the rubber roof.
- Inspect the rubber roof for old, loose or crumbling roof sealant.
- Clean the rubber roof using dish-washing detergent and water.
How can you tell the difference between PVC and TPO membranes?
Off the rack, no you cannot tell the difference visually. You can ‘feel’ a difference- PVC feeling more waxy, and feeling more pliable then TPO (unaged anyway…) PVC also has a distinct ‘PVC Smell’ to it.
When should I replace my roof membranes?
If the roof is over 10 years old, install a new Modified Bitumen Membrane 2-ply over the EPDM. If there have been many intermittent repairs done, then it’s time to replace it. If the seams around A/C units, skylights, and vents are separating, replacing the roof would be less expensive over time.
Can you pressure wash a membrane roof?
Rinse the roof completely with a low-pressure power washer to rinse the cleaning solution off the roof. Avoid walking on surfaces where the cleaning solution has not been rinsed away. Inspect the membrane to ensure no damage has occurred; repair any damage discovered.
How long does a rubber membrane roof last?
An EPDM rubber roof is incredibly long-lasting and durable. The rubber recycled and used for the synthetic rubber membrane isn’t damaged under the sun’s UV or ultraviolet rays. If installed correctly, you can expect a rubber roof to in excess of up to 50 years.
Which is more expensive EPDM or TPO?
TPO roofing membranes are more expensive than EPDM. Regardless of which membrane you choose, it is better to spend more money and invest in a thicker membrane. Both EPDM and TPO roofs perform better and last longer if they are thicker.
What is membrane roofing for flat roofs?
Membrane roofing refers to a number of different roofing materials. Historically, the most common type was a tar and pitch membrane, but newer synthetic materials are quickly taking over. For a flat roof, these newer synthetic membranes offer a great leak proof option. Membrane Roofing for Flat Roofs
What is EPDM roofing?
Ethylene propylene diene terpolymer (EPDM) is a petrochemical-based rubber used in the manufacture of roof coverings. It has been in use for about 20 years and has proven to be highly weather-resistant. Rubber membrane, as with TPO membrane, is popular for low-slope and flat roofs where thin coverings are preferred.
What are the different types of thermoplastic roof membranes?
There are four common subcategories of thermoplastic roof membranes. The most common thermoplastic roof membranes are PVC (chemical weld) and TPO (heat weld). PVC is common simply because it was the frontrunner until TPO came into its own with more adopters.
What is a roof membrane strip?
The membrane strips are heat or chemical welded to create a single ply. Proper welds are as strong as the material. There are four common subcategories of thermoplastic roof membranes. The most common thermoplastic roof membranes are PVC (chemical weld) and TPO (heat weld).