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AMERICAN GYPSUM® DRYWALL AT PIONEER MATERIALS WEST

For Colorado and Wyoming construction professionals

Crane carrying American Gypsum
American Gypsum M-BLOC drywall
American Gypsum drywall truck

With innovative thinking driving the development of quality products at exceptional value, American Gypsum delivers the drywall solutions that local builders want, need, and appreciate.

Committed to getting the best construction products into our customers’ hands, Pioneer Materials West offers a solid inventory of American Gypsum drywall products* from our yards in Colorado and Wyoming.

American Gypsum M-BLOC

M-BLOC® Drywall

Developed as an improved mold- and moisture-resistant alternative to standard wallboard, M-BLOC drywall offers:

  • Fire-resistant gypsum encased in a moisture-resistant paper shell
  • 100% recycled blue face paper and brown back paper
  • Best possible scores for mold and mildew growth mitigation per ASTM D3272
  • GREENGUARD® Gold certification for low-emitting materials
American Gypsum M-BLOC Type X

M-BLOC® Type X Drywall

Tested to the industry’s most exacting standards for moisture resistance and chemical emissions, M-BLOC Type X drywall offers:

  • A fire-resistant gypsum core encased in mold- and moisture-resistant blue and brown paper
  • Fiberglass reinforcement for extra strength and durability
  • Eco-friendly construction (100% recycled material)
  • Effective protection in wet areas (kitchens, bathrooms, laundry) as well as exterior soffits or sidewalls
American Gypsum M-GLASS sheathing

M-GLASS® Exterior Sheathing 

High-performance gypsum sheathing designed for direct attachment to exterior sidewall and soffit framing, M-GLASS sheathing from American Gypsum offers:

  • Moisture- and mold-resistant panels rated for 12 months of exposure under normal weather
  • Type X core for use in approved fire-rated assemblies
  • Underlayment for wood, metal, or vinyl siding, properly detailed EIFS, masonry veneer, stucco, shingles, and more
  • No asbestos or detectable levels of formaldehyde
American Gypsum M-GLASS Shaftliner

M-GLASS® Shaftliner

Lightweight, non-load-bearing gypsum shaft wall systems replacing traditional masonry for internal vertical enclosures—including stairwells, elevator enclosures, and mechanical chases—M-GLASS Shaftliner panels offer:

  • Compatibility with other American Gypsum products and metal framing members
  • Type X rated for excellent fire resistance
  • Approval for use in multiple fire-rated assemblies (shaft wall systems and H-Stud area separations)
  • GREENGUARD® Gold certification for low-emitting VOC content 

*Inventory varies by location. Call your local yard to confirm specific product availability. If we do not have a product in stock at your local yard, we will gladly order it for you.

Buy American Gypsum Drywall at Pioneer Materials West in CO and WY

Local builders: Everything you need for your construction projects in Colorado and Wyoming, including quality American Gypsum drywall, is here at Pioneer Materials West. Call or come see us today.

Use your online account to request a quote or start your order now.

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About Pioneer Materials West

A proud member of the GMS family of companies, Pioneer Materials West offers commercial and residential customers the best quality construction supplies in Colorado (Berthoud, Centennial, Denver [PMW Acoustical], Grand Junction, Gypsum, Silverthorne, Steamboat Springs) and Wyoming (Casper). Since the 1980s, Pioneer Materials West has covered your Rocky Mountain construction needs with unmatched selections of drywall, insulation, acoustical tile, tools, and other building supplies.

About American Gypsum

With 50-plus years of experience manufacturing, selling, and distributing quality drywall products across the U.S., American Gypsum is among the largest producers of gypsum wallboard in North America. Dedicated to exceptional service, solutions, and value, American Gypsum consistently delivers drywall products whose quality consistently exceeds customers’ demands.