USG SECUROCK Ultralight Glass-Matt Roof Board 1/4″ x 4′ x 8′

The USG SECUROCK Ultralight Glass-Matt Roof Board 1/4″ x 4′ x 8′ is a gypsum board from USG for exact-match material ordering. Match manufacturer model/MPN 221850 442. This variant is sold as PC with SKU USG221850. New coated mat for adhered applications.

Key Specs

• Brand: USG
• Model / MPN: 221850 442
• SKU: USG221850
• Sell unit: PC
• Product type: Gypsum Board
• Size: 1/4″ x 4′ x 8′
• Color / finish: 1/4″ x 4′ x 8′
• Category: Commercial Roofing | Commercial Roofing/Coverboards | Commercial Roofing/Coverboards/Gypsum Board

Key Features

• Exceptional bond and low absorption in cold-applied adhesive applications
• Light-weight core up to 18% lighter than competitive products
• Moisture and mold resistant core and facer
• Fire-resistant for use as fire barrier and thermal barrier

Coverage & How Much You Need

Confirm coverage/yield from the manufacturer instructions and job takeoff before ordering.

Compatibility / Fitment

Use only with compatible systems and installation conditions specified by the manufacturer.

FAQs

What exactly am I ordering?

USG SECUROCK Ultralight Glass-Matt Roof Board 1/4″ x 4′ x 8′, sold as PC, SKU USG221850, manufacturer model/MPN 221850 442.

What unit is the price based on?

The price is for the PC sell unit.

What should I match before ordering?

Match brand, model/MPN where available, size/color, sell unit, and the project specification.

Can this be substituted?

Treat this as an exact-match building material selection; hold for review before substituting a different model, color, size, or system family.

How do I estimate quantity?

Use the project takeoff plus manufacturer installation instructions, including waste, overlap, and accessory requirements.

Follow manufacturer instructions, OSHA-safe work practices, local code, and project specifications.

Product Expert Notes

Choose this variant when USG, SKU USG221850, PC sell unit, and MPN 221850 442 match the job requirement.