GAF TPO EverGuard Extreme 70 mil

EverGuard Extreme® 70 mil

EverGuard Extreme® 70 mil

70 mil EverGuard Extreme® TPO is the perfect replacement for standard 80 mil TPO membranes, offering superior performance at an economical price.

  • Advanced Heat & UV Protection TPO
  • Next Generation TPO Engineered For Extreme Applications

The Problem

Building-integrated photovoltaics (BIPV) systems are typically mounted directly to a low slope roofing membrane.

Temperatures are as high as 190?F in close proximity to solar panels mounted directly to white roofing membrane. Standard TPO formulations can fail in extreme accelerated heat aging studies in as little as 40 days. Without enhanced UV and heat protection packages, membranes will be subject to premature failures.

Removing BIPV and repairing failed roofing membrane is expensive. Installed pricing for BIPV ranges from $4.00-6.50 per watt. These arrays are typically expected to have a useful life of 20-25 years. GAF scientists were the first to use the new Atlas Ultra Accelerated Weathering Test Unit. This unit collects and concentrates sunlight producing the equivalent of 40 years exposure in only 12 months. EverGuard Extreme™ TPO membranes survived 13 months under these conditions without signs of failure.

Green Spec

EverGuard Extreme™ TPO was engineered with solar installations in mind.

High heat and solar loading can cause premature failure in single-ply roofing.

Thermoplastic polyolefin (TPO) single-ply roofing membranes have an excellent history in commercial roofing. Single-ply roofing membranes are constructed using organic polymers. Like all organic materials they are subject to damage by extreme heat, sunlight and UV. The increasing use of building integrated photovoltaic (BIPV) has highlighted the challenges faced by roofing membranes exposed to concentrated heat, sunlight and UV.

Solar panels are dark in color by nature. Dark BIPV panels can create areas of high temperatures up to 190°F on roof surfaces immediately adjacent to them. Highly reflective architectural structures such as mirrored glass can act as solar magnifiers and concentrate sunlight onto adjacent roof surfaces. This concentrated sunlight can be far more intense than ambient sunlight leading to higher heat and UV loading than would be anticipated under normal circumstances leading to premature failure.

The Solution

EverGuard Extreme™ TPO is formulated for the most severe applications!

GAF scientists have created a new grade of TPO single-ply membrane that is built to handle the extreme demands that new roof top applications can place on roofing membranes. EverGuard Extreme™ TPO uses proprietary stabilizers and UV absorbers to achieve weathering performance far beyond current standards.


35 Year Guarantee

It carries the longest guarantee in the industry!

The Proof

EverGuard Extreme™ TPO was tested under the most severe conditions— and it far exceeded standard TPO membranes.

EverGuard Extreme™ and other commercial TPO membranes were subjected to accelerated weathering and aging tests. Heat-aging studies were conducted at 280°F—a temperature beyond the most rigorous proposed ASTM tests.

Everguard extreme graph
Everguard extreme samples



1. Certain data is provided in MD (machine direction) x CMD (cross machine direction) format.

2. Data is based upon typical product performance, and is subject to normal manufacturing tolerance and variance

Physical Properties ASTM Test Method ASTM 6878 Minimum EverGuard®Typical Test Data
Nominal Thickness ASTM D-751 0.039″ (min.) 0.050″, 0.060″, 0.070″, and 0.080″
Breaking Strength ASTM D-751 Grab Method 220 lbf/in. 360 lbf x 340 lbf
Factory Seam Strength ASTM D-751 66 lbf 140 lbf (membrane failure).
Elongation at Break ASTM D-751 15% 30%
Heat Aging ASTM D-573 90% Retention of Breaking Strength and Elongation at Break 100%
Tear Strength ASTM D-751
8″ x 8″ Sample
55 lbf 60 lbf x 150 lbf
Puncture Resistance FTM 101C Method 2031 Not Established >380 lbs.
Cold Brittleness ASTM D-2137 -40º C -40º C
Permeance ASTM E-96 Not Established 0.04 Perms
Dimensional Change ASTM D-1204 @158º F, 6 hrs. +/- 1% 0.4%
Water Absorption ASTM D-471 @158º F, 1 week +/- 3% 0.7%
Hydrostatic Resistance ASTM D-751 Method D Not Established >430 psi
Ozone Resistance ASTM D-1149 No visible deterioration @ 7 x magnification No visible deterioration @ 7 x magnification
Reflectivity (white) ASTM C1549 N/A 0.84
Emissivity (white) ASTM C1371 N/A 0.84
Weather Resistance ASTM G155, 80ºC BPT, 50ºC chamber air temp., no cracks and crazing observed when the exposed specimen wrapped around a 3″ mandrel and inspected at 7x magnification 10,080 kJ/(m2•nm) at 340 nm >30,240 kJ/(m2•nm) at 340 nm


“Typical Test Data” is based on Extreme 60 mil.



Everguard extreme warranty

No Exclusion For Ponding Water!

Leaks caused by ponding (or standing) water are NOT excluded in your EverGuard® TPO system guarantee. Before you buy, always check the details of the manufacturer’s guarantee coverage!