FlexGuard® TPO Membrane

Raw materials

Made of high-quality polypropylene and rubber co-polymerization, McGuire Flexguard TPO contains no plasticizers or harmful substances.

It offers excellent aging resistance, maintaining flexibility even at -40°C without becoming hard or brittle.

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

Smooth (Category H),
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 rooling systems, when installed in accordance with manufacturer requirements and project specifications

Thickness (mil)	Width / ft.	Length / ft.
45	5, 6, 10	100
60	5, 6, 10	100
80	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

Ensure substrates are clean, dry, smooth, and free of sharp edges, fins, loose or foreign materials, oil, grease, and other contaminants that may damage the membrane.
Repair all rough surfaces that could damage the membrane as specified to create a smooth substrate.
Properly fill all surface voids greater than 1/4” (6.3 mm) wide with an acceptable fill material.
Install McGuire FlexGuard TPO waterproofing membrane as a continuous roofing or waterproofing layer. Overlap rolls (side laps and end laps) before heat welding the seam areas.
Follow current McGuire FlexGuard TPO specifications, details, and workmanship requirements during installation.

Property	ASTM Standard	Performance Minimum	Typical Performance 45 mil	Typical Performance 60 Mil
Overall Thickness	D751	0.039″ (1mm)	0.045″ (1.14 mm) 100%	0.060″ (1.52 mm) 100%
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	D 751, Grab Method	15%	25%	25%
Tearing Strength	D751	55 lbf (245 N)	120 lbf (534 N)	120 lbf (534 N)
Brittleness Point	D2137	-40°F (-40°C)	Pass	Pass
Ozone Resistance No Cracks	D1149	Pass (No Cracks)	Pass	Pass
Properties After Heat Aging (Retained Values) ASTM D 573-5376 h (224 days or 32 weeks) at 240°F (116°C)
Breaking Strength	D 751 Grab Method	90% Minimum	> 90%	> 90%
Elongation at Break	D 751 Grab Method	90% Minimum	> 90%	> 90%
Tearing Strength	D 751	90% Minimum	> 90%	> 90%
Weight of Change	—	± 1% Minimum	<1%	<1%
Linear Dimension Change	D 1204 6 h at 158°F (70°C)	± 1% Minimum	<1%	<1%

What should contractors consider when selecting the best TPO manufacturer in USA?

Contractors should evaluate membrane quality, long-term durability, seam strength, installation efficiency, weather resistance, and available warranty programs. FlexGuard® TPO membranes are engineered to provide strong waterproofing performance, heat-weldable seams, and dependable protection for commercial roofing applications.

Why are FlexGuard® TPO membranes a popular choice for commercial roofing projects in Dallas, Texas?

Commercial buildings in Dallas, Texas experience intense sun exposure, temperature fluctuations, and severe weather conditions. FlexGuard® TPO membranes are designed with UV-resistant properties, puncture resistance, and reflective performance to help support long-term roof durability and energy efficiency.

What are the advantages of a reinforced TPO roofing membrane?

Reinforced TPO membranes offer enhanced strength, impact resistance, puncture resistance, and dimensional stability. Their heat-welded seams create a monolithic waterproofing layer that helps protect commercial buildings from moisture intrusion and environmental exposure.

Are FlexGuard® TPO membranes suitable for roof replacement and retrofit projects?

Yes. FlexGuard® TPO membranes are available in both smooth and fleece-back configurations. Fleece-back options can be an effective solution for certain reroofing applications where building owners want to minimize tear-off costs while improving roof performance.

What membrane thickness options are available for FlexGuard® TPO roofing systems?

FlexGuard® TPO membranes are available in 45-mil, 60-mil, and 80-mil thicknesses, allowing contractors, consultants, and building owners to select a roofing solution based on project requirements, building conditions, and long-term performance goals.

FlexGuard® TPO Membrane

FlexGuard® TPO Membrane

Raw materials

Excellent Quality

Convenient Construction

Product Type

Application Scope

Quick Links

Products

Single Ply Membranes

FlexGuard® TPO Membrane

FlexGuard® TPO Membrane

FlexGuard® TPO Membrane

Raw materials

Excellent Quality

Convenient Construction

Product Type

Application Scope

Quick Links

Products

Single Ply Membranes

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