Johns Manville | Membranes

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Membranes

TPO 60mil Membrane

TPO | Single Ply | Roofing Membrane

Meets or exceeds the requirements of ASTM D 6878

Thickness Over Scrim: Optimized and tested on a continual basis with a state-of-the-art thickness gauge to verify that the thickness valued by our customers in incorporated into the sheet.
One of the Widest Melt Windows: Promotes better welds over a wider variety of speeds and temperatures and leads to a softer, more flexible, and workable sheet.
Reinforced Fabric Scrim Layer and Top-Ply Thickness: Lends to durable physical properties including:

  • Long-term weathering, UV resistance, and heat-aging properties
  • High breaking and tearing strength

Optimized TPO Formulation: Delivers high-performance ozone resistance, cool roof reflectivity, and overall weather resistance.
EPDM 60mil Membrane

EPDM NR |Single Ply | Roofing Membrane

Fully Extruded: Produces fewer air voids, more uniform thickness and smoother sheets.
Vulcanization Process: Combines two layers of membrane to produce a fully cross-linked monolithic membrane.
Membrane Formulation: Performs in extreme temperature climates and withstands differential movement (elongation).
UV-Stabilization Properties: Offers outstanding ozone and weather resistance delivering one of the longest service lives available.
Technical Expertise: Backed by 30+ years of EPDM experience and installations.
APP Mineral Surfaced Membrane

APPeX 4.5M | Bituminous | Roofing Membrane

Meets the requirements of ASTM D 6222, Type I, Grade G

APPeX 4.5M is used as a cap or flashing sheet in APP multi-ply roofing systems.

Ceramic-Coated Roofing Granules: Specifically engineered for optimal embedment in the APP-blended sheet. The ceramic coating promotes excellent long-term adhesion.
APP (Atactic Polypropylene) Polymer and Asphalt Blend: Provides an extremely durable sheet with excellent weathering characteristics, flexibility and dimensional stability for ease of handling and quick installations.
Polyester Reinforcement Mat:Provides bidirectional glass-scrim reinforcement and offers robust tear strength and puncture resistance, allowing for high wind performance and excellent hail rating. The sheet also exhibits strong dimensional stability and enhanced elongation.
Polyolefin Burn-Off Film: Promotes ease of heat welding.

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