JM DynaGlas FR CR G Cap Sheet Cool Roof White 39-3/8″ x 32′ 10″

The JM DynaGlas FR CR G Cap Sheet Cool Roof White 39-3/8″ x 32′ 10″ is a bur & mb systems for jobs that require Johns Manville model/MPN 90038714 in the RL sell unit. DynaGlas FR CR G is a SBS cap sheet with reflective roofing granules, a high-quality SBS rubber and asphalt blend, and a fiber glass reinforcement mat that offers excellent dimensional stability and tensile strength.

Key Specs

• Brand: Johns Manville
• Model / MPN: 90038714
• SKU: JM90038714
• Sell unit: RL
• Product type: BUR & MB Systems
• Size / color: 39-3/8″ x 32′ 10″
• Category: Commercial Roofing | Commercial Roofing/Membranes | Commercial Roofing/Membranes/BUR & MB Systems
• Coverage / unit: 1 squares (100 sq ft) per roll

Key Features

• Fire-Retardant, Fiber Glass-Reinforced, SBS Reflective Mineral-Surfaced, Cool Roof Cap Sheet
• Meets the requirements of ASTM D 6163, Type I, Grade G
• Reflective Roofing Granules: Specifically engineered for high reflectivity, durability and optimal embedment in the SBS modified bitumen sheet.
• High-Quality SBS Rubber and Asphalt Blend: Lends elasticity and flexibility to the sheet and contains fire-retardant additives. The thicker JM SBS coating provides more waterproofing value.
• Fiber Glass Reinforcement Mat: Offers excellent dimensional stability and tensile strength and withstands differential movement. Because it has no thermal memory less time is needed to relax the sheet, allowing for ease of installation. The fiber glass ma
• Color: Bright white only

Coverage & How Much You Need

This item is listed as 1 squares (100 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 DynaGlas FR CR G Cap Sheet Cool Roof White 39-3/8″ x 32′ 10″, sold as RL, with SKU JM90038714 and manufacturer model/MPN 90038714.

What model or part number should I match?

Match model/MPN 90038714 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 1 squares (100 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.

Roofing and exterior-envelope work can involve fall hazards, weather exposure, fumes, adhesives, and system-specific installation requirements; follow the manufacturer instructions, OSHA-safe work practices, and local code or use a qualified contractor.

Product Expert Notes

Choose this item when Johns Manville model/MPN 90038714, SKU JM90038714, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.