The CertainTeed Flintglas Ply 4 Sheet Non-Modified Interply & Base Sheet 39-3/8" x 164' 7" Non-Modified is a bur & mb systems for jobs that require CertainTeed model/MPN 412145 in the RL sell unit. CertainTeed Flintglas Ply 4 is designed for use as an interply felt for both hot and cold applied, inorganic built-up roofing systems

Key Specs

• Brand: CertainTeed
• Model / MPN: 412145
• SKU: CER412145
• Sell unit: RL
• Product type: BUR & MB Systems
• Size / color: 39-3/8" x 164' 7" Non-Modified
• Category: Commercial Roofing | Commercial Roofing/Membranes | Commercial Roofing/Membranes/BUR & MB Systems
• Coverage / unit: 5 squares (500 sq ft) per roll

Key Features

• It is specially constructed to provide uniform strength and promote improved asphalt uniformity and adhesion between plies
• Wet process fiberglass support Mat
• Surfaced with Release Agent

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?

CertainTeed Flintglas Ply 4 Sheet Non-Modified Interply & Base Sheet 39-3/8" x 164' 7" Non-Modified, sold as RL, with SKU CER412145 and manufacturer model/MPN 412145.

What model or part number should I match?

Match model/MPN 412145 and confirm the brand is CertainTeed. 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 CertainTeed model/MPN 412145, SKU CER412145, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.