
Malbastone
Malbastone Underlayment Sheathing Panels are fiber reinforced MgO based sheets to replace OSB or plywood subfloor and poured gypsum concrete in certain fire rated floor assemblies.

Jeff Ouyang
CEO

Fire Resistance
Underlayment Sheathing Panels are fire resistance tested and rated thus providing with fire control properties.

Sound Control
Underlayment Sheathing Panels are STC and IIC rated thus providing acoustic resistance.

Structural Strength
Instead of stopping all other trades like poured gypsum concrete, our low carbon fire rated structural sheathing goes in as the building goes up, saving you time and money.
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Sheathing Decking & SIPS
Inspiration
Get inspired with photos of Malbastone products in real projects







About Malbastone
Our structural sheathing panels can replace poured concrete floors in multifamily construction and other sheathing materials used in walls and underlayment.
Seattle, Washington
(847) 732-7330