The TopShield PRO SA PlyBase Black 39-3/8" x 64' 6" is a bur & mb systems for jobs that require TopShield model/MPN 650446 in the RL sell unit. The TopShield Pro SA PlyBase is crafted with an extra-strong fiberglass-reinforced mat that features a top sheet coated with a modified bitumen compound and a self-adhering modified bitumen compound on the back.

Key Specs

• Brand: TopShield
• Model / MPN: 650446
• SKU: TSP650446
• Sell unit: RL
• Product type: BUR & MB Systems
• Size / color: 39-3/8" x 64' 6"
• Category: Commercial Roofing | Commercial Roofing/Membranes | Commercial Roofing/Membranes/BUR & MB Systems
• Coverage / unit: 2 squares (200 sq ft) per roll

Key Features

• Robust fiberglass-reinforced mat that minimizes risk of fumes or burns
• No torching required but approved to do so
• No building occupant disturbance during installation
• No mess or side lap bleed out
• Reduced insurance requirements

Coverage & How Much You Need

This item is listed as 2 squares (200 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?

TopShield PRO SA PlyBase Black 39-3/8" x 64' 6", sold as RL, with SKU TSP650446 and manufacturer model/MPN 650446.

What model or part number should I match?

Match model/MPN 650446 and confirm the brand is TopShield. 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 2 squares (200 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 TopShield model/MPN 650446, SKU TSP650446, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.