JM GlasPly Type IV Fiber Glass-Reinforced Asphalt-Coated Ply Sheet

The JM GlasPly Type IV Fiber Glass-Reinforced Asphalt-Coated Ply Sheet is a bur & mb systems for jobs that require Johns Manville model/MPN 90001270 in the RL sell unit. GlasPly IV is intended for use as an interply in any built-up roofing or modified bitumen roofing system.

Key Specs

• Brand: Johns Manville
• Model / MPN: 90001270
• SKU: JMGPP5
• Sell unit: RL
• Product type: BUR & MB Systems
• Size / color: 36″ x 177′
• Category: Commercial Roofing | Commercial Roofing/Membranes | Commercial Roofing/Membranes/BUR & MB Systems
• Coverage / unit: 5 squares (500 sq ft) per roll

Key Features

• Offers consistent tensile strength and tear resistance. Low moisture, excellent dimensional stability and resistance to rot make it an ideal replacement for organic ply sheets.
• Provides a solid dimensionally stable substrate for other roofing membrane components. Laying lines – Before the product is wound into rolls, it is imprinted with laying lines on the top surface so the roofing mechanic can install the felt with the proper
• Liquid parting agent eliminates sticking when the felt is unrolled

Coverage & How Much You Need

This item is listed as 5 squares (500 sq ft) per roll. Use the project takeoff, manufacturer installation instructions, and expected waste/overlap to confirm the order quantity.

Compatibility / Fitment

Use this item only when the brand, model/MPN, size/color, sell unit, and system type match the project specification. Do not substitute it for a different bur & mb systems, pack size, color, membrane/system family, or installation condition without checking the manufacturer instructions.

FAQs

What exactly am I ordering?

JM GlasPly Type IV Fiber Glass-Reinforced Asphalt-Coated Ply Sheet, sold as RL, with SKU JMGPP5 and manufacturer model/MPN 90001270.

What model or part number should I match?

Match model/MPN 90001270 and confirm the brand is Johns Manville. If the job spec lists a different model, size, color, or system family, hold for review.

What unit is the price based on?

This listing is built around the RL sell unit. Confirm the unit before comparing price, quantity, or coverage.

How do I estimate quantity?

Use 5 squares (500 sq ft) per roll, then add waste or overlap per the manufacturer instructions and the project design.

What should be checked before purchase?

Confirm the model/MPN, sell unit, size/color, jobsite condition, compatible system components, and any manufacturer installation limits before approving the order.

Verify the manufacturer instructions, local code, and project specification before installation or substitution.

Product Expert Notes

Choose this item when Johns Manville model/MPN 90001270, SKU JMGPP5, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.