Johns Manville 80 mil TPO Roofing Membrane, White, 5 ft x 100 ft Roll

This is a Johns Manville 80 mil TPO single-ply roofing membrane in white, supplied as one 5 ft x 100 ft roll for commercial low-slope applications. The extra-thick thermoplastic sheet is the heaviest standard gauge in the JM TPO family and installs with hot-air welded seams. Use it with JM flashing, fasteners, plates and insulation for a complete JM system.

Key Features:

• Heavy 80 mil: This roll uses the 80 mil gauge, the thickest standard JM TPO option listed here.
• Reflective white: White TPO finish is the standard reflective surface for JM TPO systems.
• 500 sq ft roll: The 5 ft x 100 ft roll provides 500 sq ft of membrane nominally per roll.
• Code approvals: Listed as FM Approved, UL Classified, Miami-Dade County Approved and meeting ASTM D6878.
• System component: Intended as the field membrane in a complete Johns Manville TPO roof system.
• Welded seams: TPO laps are hot-air welded per JM installation specifications.

Specifications Table:

Coverage & How Much You Need:

One 5 ft x 100 ft roll nominally covers 500 sq ft of roof field before seam laps and detailing. Plan rolls per roof area accordingly and confirm layout with JM fastening pattern documents.

Fit and Compatibility:

Part of the Johns Manville TPO roofing system; pair with JM TPO flashing and accessories, JM insulation and cover boards, JM fasteners and plates, and JM adhesives and sealants. Approved assemblies are in the JM 80 mil TPO data sheet.

Frequently Asked Questions (FAQ):

Q: What is included?
A: One 5 ft x 100 ft roll of Johns Manville 80 mil white TPO membrane; accessories and insulation are sold separately.

Q: How much does one roll cover?
A: Nominally 500 sq ft, reduced in practice by seam laps and perimeter work.

Q: Why choose 80 mil over 45 or 60 mil?
A: The 80 mil gauge provides the thickest standard sheet in this JM TPO selection; the specified assembly and warranty requirements should drive the choice.

Q: Is it approved for high-wind or coastal areas?
A: The listing states FM Approved, UL Classified and Miami-Dade County Approved status; follow JM fastening patterns for the specific wind zone.

Q: How are seams joined?
A: TPO seams are hot-air welded following Johns Manville installation instructions.

Q: What does the roll weigh?
A: The dealer sheet lists gross weight at 200 lb per roll.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Specify 80 mil where the JM assembly or warranty term requires the thickest membrane, such as high-traffic or high-heat exposures. The 5 ft width is useful for detailing, narrow sections and repair work where a 10 ft roll is unwieldy. Keep flashing, plates and sealants within the JM TPO system.

Installation requires hot-air welding tools and rooftop work; use trained crews, fall protection, and follow Johns Manville specifications and local code.

Get the Johns Manville 80 mil white TPO membrane roll for heavy-duty low-slope roofing.