McGuire FlexGuard TPO Fleeceback - McGuire Roofing Products

Raw materials

The membrane is factory-laminated to a non-woven polyester fleece backing designed to facilitate full adhesion or mechanical attachment using manufacturer-approved bonding adhesives or fastening systems. The fleece backing improves adhesion to approved substrates, enhances dimensional stability, and increases resistance to puncture and substrate irregularities, while maintaining the flexibility and heat-weldability of the exposed TPO surface.

Excellent Quality

McGuire FlexGuard TPO features a low shrink rate, superior strength, impact and puncture resistance, and a long service life.

Convenient Construction

Roofing assembly is simplified with McGuire Flexguard TPO. It’s easy to weld, highly efficient, and provides strong seam connections with high peel strength for watertight sealing.

Product Type

Fiber fleece-backed (+55 mils) (Category L), Reinforced with polyester scrim (Category F).

Application Scope

The membrane is suitable for use in new construction and roof restoration applications over approved substrates, including steel, concrete, wood, gypsum, and existing compatible roofing systems, when installed in accordance with manufacturer requirements and project specifications.

Thickness (mil)	Width / ft.	Length / ft.
100	5, 6, 10	100
115	5, 6, 10	100
135	5, 6, 10	100

Enhanced chemical resistance
Can increase a building’s energy efficiency
Excellent heat weldability
Exceptional low-temperature flexibility
Highly resistant to punctures, UV, ozone and oxidation

Substrates must be clean, dry, smooth, and free of sharp edges, fins, loose or foreign materials, oil, grease, and other materials that may damage the membrane.
All rough surfaces that can damage the membrane shall be repaired as specified to offer a smooth
substrate.
All surface voids greater than 1/4” (6.3mm) wide should be properly filled with an acceptable fill material. McGuire FlexGuard TPO waterproofing membrane is installed as a continuous roofing or waterproofing layer on the roof. Rolls are over lapped (side laps and end laps) prior to heat welding the seam areas. Install the McGuire FlexGuard TPO in accordance with current McGuire FlexGuard TPO specifications, details and workmanship requirement

Property	ASTM Standard	Performance Minimum	Typical Performance 45 Mil	Typical Performance 60 Mil
Overall Thickness	D 751	0.039″ (1mm)	0.045″ (1.14mm) ±10%	0.060″ (1.52mm) ±10%
Coating Over Scrim	D 7635	0.015″ (0.38mm)	0.017″ (0.43mm)	0.021″ (0.53mm)
Breaking Strength	D 751, Grab Method	220 lbf (979 N)	340 lbf (1,512 N)	390 lbf (1,735 N)
Elongation of Reinforcement at Break	D 751, Grab Method	15%	25%	25%
Tearing Strength	D 751	55 lbf (245 N)	120 lbf (534 N)	120 lbf (534 N)
Brittleness Point	D 2137	-40°F (-40°C)	Pass	Pass
Ozone Resistance – No Cracks	D1149	Pass (No Cracks)	Pass	Pass
Properties After Heating Aging (Retained Values) ASTM D 573–5376 h (224 days or 32 weeks) at 240°F (116°C)
Breaking Strength	D 751, Grab Method	9096 Minimum	>9096	>9096
Elongation at Break	D 751, Grab Method	9096 Minimum	>9096	>9096
Tearing Strength	D 751	9096 Minimum	>9096	>9096
Weight of Change	—	±196 Minimum	<196	<196
Linear Dimension Change	D 1204 6 h at 158°F (70°C)	±196 Minimum	<196	<196
Water Absorption	D 471	±396 Minimum	<396	<396
Weather Resistance 176°F (80°C) Black Panel, no cracking, crazing when wrapped around Ø3″ (76.2mm) mandrel and inspected at 7x magnification	G 155	10,800 kJ/m² Minimum	<60,000 kJ/m²	<60,000 kJ/m²
Puncture Resistance	FTM 101C, Method 2031	—	265 (1,180)	300 (1,300)
Dynamic Puncture Resistance MD	D 5635	—	Pass (20 J)	Pass (40 J)
Dynamic Puncture Resistance CD	D 5635	—	Pass (35 J)	Pass (50 J)
Static Puncture Resistance	D 5602	—	Pass (25 kg)	Pass (25 kg)
Air Permeance (Material)	E 2178*	<0.004 ft³/ft² (0.02 L/s·m²)	Pass	Pass