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Gypsum Products

Williams Lumber carries a wide selection of gypsum panels along with a variety of finishing products. Not all products available in all locations.

Tapered Edge Gypsum Panels

8' 10' 12' 14' 16' Applications
1/2" Light Weight (4 Foot) X X X X X
1/2" Light Weight (54 Inches) X
3/8" (4 Foot) X
1/4" (4 Foot) X
1/2" Firecode Type C (4 Foot) X X Fire resistant gypsum core, Type C, for use in fire-rated construction.
5/8" Firecode Type X (4 Foot) X X X Fire resistant gypsum core, Type X, for use in fire-rated construction.
1/2" Mold/Mildew Resistant (4 Foot) X X Provides extra protection against mold and mildew compared to regular gypsum.
5/8" Mold/Mildew Resistant (4 Foot) X Provides extra protection against mold and mildew compared to regular gypsum.
1/2" Imperial Board (4 Foot) X Designed for Vineer Plasters.
1/2" Dens Armor Plus (4 Foot) X Moisture resistant with fiberglass mats.
5/8" Densglass Gold (4 Foot) X Sheathing ideal for behind brick, siding, EIFS, stucco and other permanent claddings.

X  Indicates size in stock - may vary by store

Underlayment & Backings

Applications
1/2" Dens Shield Tile Backer Ceramic Tile Underlayment
1/2" Permabase (3' x 5') Underlayment or backing for tub and shower surrounds, countertops, or flooring.
1/2" Permabase (4' x 8') Underlayment or backing for tub and shower surrounds, countertops, or flooring.
1/4" Ultrabacker (3' x 5') Use as underlayment for floors, countertops, tub decks and outdoor kitchen counters. Stronger and more rigid than other 1/4" boards.
1/4" Hardibacker (3' x 5') For floors and countertops. No mesh board cuts easily.
1/4" Hardibacker (4' x 8') For floors and countertops. No mesh board cuts easily.
1/2" Hardibacker 500 (3' x 5') Superior protection for walls and floors against mold and moisture damage. Contains no paper facing.
1/2" Hardibacker 500 (4' x 8') Superior protection for walls and floors against mold and moisture damage. Contains no paper facing.

Gypsum Compound

Applications
61.7# USG All Purpose Compound Use for taping, finishing and repairs.
4.5 Gal USG Plus 3 Compound Light weight and all purpose.
4.5 Gal USG Midweight Weighs up to 15% less. Use for finishing panels.
50# Structolight Basecoat Lightweight plaster that weighs less than half as much as sanded plaster.
Durabond 45 25# Compound Provide a hard, plaster-like surface for interior gypsum panels and exterior gypsum ceiling boards.
Durabond 90 25# Compound Provide a hard, plaster-like surface for interior gypsum panels and exterior gypsum ceiling boards.
Easysand 45 18# Compound These compounds are ideal for heavy fills and they sand easily, allowing fast, smooth finishing. Setting times vary.
Easysand 90 18# Compound These compounds are ideal for heavy fills and they sand easily, allowing fast, smooth finishing. Setting times vary.
4.5 gal. Proform Multiuse Compound Vinyl based ready mix with easier pull.

Gypsum Accessories

Applications
250' Paper Tape Use with ready mix or setting type joint compound.
50' Durock Tape Tile backer tape.
Ultraflex 325 Drywall Trim Drywall corner for spans less than 10' and short runs.
Ultraflex 450 Drywall Trim Drywall corner for spans longer than 10' and long peaks.

Brands We Carry

  • + USG
    USG
    USG

    USG provides a full portfolio of high-performance roofing solutions from cement, glass-mat and gypsum-fiber roof boards to gypsum-concrete patch and our all new structural panel concrete roof deck.

  • + QuietRock
    QuietRock
    QuietRock

    Quiet® products reduce sound and vibration in a multitude of applications by utilizing modern chemistries, techniques and a Silicon Valley approach to building science. QuietRock achieves high sound attenuation and fire-resistance in one product using less space, less material and less labor than conventional alternatives.