Time to reach 1 5 weight loss or surface cracking visible using 7x magnification whichever comes first rationale.
Gaf tpo roof failures.
Gaf analyzed membrane samples from roofs across the us and studied thickness over scrim surface cracking and the ability to repair aging tpo membranes.
At 1 66 per square foot generic tpo is 13 more expensive than high quality brand name pvc so the price war is lost.
Fwiw we ve never observed such a failure in gaf s everguard tpo membrane what about the allan buick bers 2011 study on the roofs at unlv in las vegas that found high heat related failures of a 3 year old gaf tpo roof that resulted in replacement only 3 years later 2008 with a gaf tpo that was also failing only 2 5 years later.
Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer.
Gaf analyzed membrane samples from roofs across the us and studied thickness over scrim surface cracking and the ability to repair aging tpo membranes.
A recent study of everguard tpo roofs installed between 8 and 16 years ago found the all performed above astm standards for newly manufactured tpo.
One of the major issues with tpo roofs has been premature aging and seam failures due to prolonged exposure to intense heat.
Field failure has not occurred due to mechanical performance leaks are always the failure cracks or erosion.
The third best performing membranes were carlisle and johns manville which failed at 77 and 70 days respectively.
See page 9 top chart in sri executive summary.
A recent study of everguard tpo roofs installed between 8 and 16 years ago found they all performed above astm standards for newly manufactured tpo.
Tpo also lost its competitive advantage by using peel stick flashing.
Smooth tpo fleece back tpo self adhered tpo tpo colors extreme tpo.
Tpo heat aging proposed specification failure.
Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.
Now tpo is more like epdm rubber with heat welded field seams.
A recent study of everguard tpo roofs installed between 8 and 16 years ago found they all performed above astm standards for newly manufactured tpo.
Gaf tpo roofing membranes include.
It s no longer a truly heat welded system but is a hybrid of welded plus glued roof.
