Johns Manville EPDM Systems

Durable. Flexible. Smart.

JM logo format A-293.pngJM EPDM Roofing Systems

With superior durability and flexibility, EPDM is a smart roofing solution. 
Our EPDM production facility is one of the world's most technologically advanced, allowing us to extrude our sheets instead of using the traditional calendering process.

Our EPDM is manufactured thicker with a more uniform surface finish. This advancement in manufacturing cleaner sheets requires less preparation to ensure a stronger bond during installation.


JM EPDM NR

jm-epdm-nr-productimg.jpg45, 60 & 90 mil cured, nonreinforced EPDM (ethylene propylene diene monomer) membrane

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.


JM EPDM NR FIT Systems

jm-epdm-nr-fit-productimg.jpgNonreinforced, cured EPDM (ethylene propylene diene monomer) membrane

Meets the requirements of ASTM D 4637, Type I

Factory Inseam Tape: For superior quality assurance and labor savings compared to field fabricated seams.

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.


JM EPDM R

jm-epdm-r-productimg.jpgCured EPDM (ethylene propylene diene monomer) membrane reinforced with a tough 1,000+ denier polyester mat

Meets the requirements of ASTM D 4637, Type II

Fully Extruded: Produces fewer air voids, more uniform thickness and smoother sheets.

Vulcanization Process: Produces a redundant waterproofing monolithic membrane.

Polymer Formulation: Performs in extreme temperature climates and withstands differential movement.

UV-Stabilization Properties: Offers superior ozone and weather resistance delivering one of the longest service lives available.


JM EPDM R FIT Systems

jm-epdm-r-fit-productimg.jpgCured EPDM membrane reinforced with 1,000+ denier polyester mat and factory-applied inseam tape. Excellent puncture and hail resistance.

Meets the requirements of ASTM D 4637, Type II

Factory Inseam Tape: For superior quality assurance and labor savings compared to field fabricated seams.

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.

Polymer 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.


JM EPDM Metal/Membrane Flashing

JM EPDM Metal/Membrane Flashing is a specially designed and manufactured flashing for sealing and waterproofing JM EPDM roofing systems where they join an adjacent bituminous roof membrane. It is comprised of a nominal 6" (15.24 cm) strip of JM EPDM membrane secured (using a patented method) to flanges of nominal 4" (10.16 cm) wide, Type 100G-6, galvanized steel.


JM Vapor Barrier SA

jm-vaporbarrier-sa.jpgPolyethylene-reinforced, self-adhering SBS vapor barrier.

Tri-laminate woven polyethylene, nonslip, UV-protected top surface provides temporary weather protection for 90 days. Provides high tensile strength and puncture resistance.

Self-sealing, high-quality SBS rubber and asphalt blend provides low air and vapor permeability.

Silicone release film allows for ease of self-adhering installation.


Installation Supplies

Johns Manville supplies a full range of necessities for EPDM system installation and maintenance, including:

  • JM EPDM Accessories
  • Adhesives, Cleaners and Primers
  • Fasteners and Plates
  • Insulation and Coverboards

Contact Us for More Information


What's New

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Nov 26, 2018, 8:48 AM

Larimer/Shannon Group is celebrating its 15th anniversary. Together, our team has over 150 years of combined experience with products and systems associated with the commercial building envelope.…

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