HENRY SBS Modified Bitumen 2ply Membrane Roof System

ModifiedPLUS® HDgT4 Heavy Duty Cap Sheet is used as the top ply in a two-ply roofing system and as a flashing membrane for modified bitumen roofing, conventional built-up roofing and as a maintenance repair material. The product incorporates a high tensile composite reinforced mat, providing it with improved mechanical properties compared to traditional products. HDgT4 has a thermofusible poly lower surface for torching to modifiedPLUS® substrates


•Heavy duty composition provides greater physical properties
•Excellent puncture resistance and tear strength
•SBS polymer provides flow resistance at high temperatures and flexibility at low temperatures for lasting durability
•Factory applied surface granules to enhance ultra-violet resistance and surface durability
•Compatible with a variety of Henry’s base sheet products, providing a variety of installation configurations



-Proven long term durability, excellent waterproofing performance

-Superior puncture resistance.
-Proven Long term Durability
-Resistance to temperature variations
-High Puncture Resistance
-Low maintenance costs
-Superior Fire Resistance
-Protection against UV rays     


Duro-Last Roofing Systems offer proven chemistry and decades of sound performance. As the commercial roofing industry’s leader in manufacturing prefabricated PVC roofing systems, Duro-Last produces roofing membranes with performance layers that far exceed industry standards and competitor systems, a history of providing long-term durability, and watertight protection.


But it’s not just top-notch products that set Duro-Last apart from the competition.



Duro-Last’s most unique offering is prefabrication of the entire roof, including accessories and details. Click here to find out how prefabrication saves time and increases quality.


Industry-Leading Warranties

Duro-Last warranties provide unparalleled protection for commercial roofing applications. We were the first manufacturer to offer a warranty that expressly covers consequential damages.


Code Approvals

Duro-Last roofing membranes meet or exceed major national fire and wind code requirements as well as most required regional approvals throughout the country.

Energy Efficient

By reflecting up to 88% of the sun’s energy, Duro-Last white roofing systems can greatly reduce energy costs. Click above to learn more about how Duro-Last contributes to sustainability.

Superior Scrim

Duro-Last’s scrim is the backbone of all Duro-Last’s membranes, giving them their strength and puncture resistance

Blueskin® VP100 & VP160 Air Barrier Membrane

Blueskin® VP100 & VP160 

Self-Adhered Water Resistive Air Barrier Membrane

Picking up where traditional house wraps leave off, Blueskin® VP100 offers a fully adhered solution that produces an air tight, water tight and weather tight membrane.

Firestone TPO Roofing Systems

Thermoplastic polyolefin (TPO) single-ply roofing membranes are among the fastest growing commercial roofing products and have gained broad industry acceptance for their many performance and installation advantages. As demand increases for heat-reflective and energy efficient roofing systems, TPO single-ply roofing membranes continue to provide exceptional resistance to ultraviolet, ozone and chemical exposure.

UltraPly TPO Roofing Systems

Suitable for a variety of low-slope commercial roofing applications, Firestone UltraPly™ TPO roofing membrane is a sustainable roofing solution for a wide range of building types.

UltraPly TPO membrane also offers design options with panels available in reflective white, tan or gray, which can help reduce a building’s cooling requirements. White and tan UltraPly TPO membranes meet the new version of the

California Energy Efficiency Standards for Residential and Nonresidential Buildings (Title 24). These standards define cool roofs in California to have a minimum three-year aged reflectance of 0.55 and a minimum thermal emittance of 0.75 for low-sloped nonresidential buildings.

White and tan UltraPly TPO membranes are listed with the Cool Roof Rating Council (CRRC), and meet or exceed the new Title 24 requirements for low-slope roofing membranes. The listing for white and tan UltraPly TPO membranes can be found on the Cool Roof Rating Council (CRRC) web site.

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