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🏗️ Wall Systems
Moisture-Resistant · Mold-Proof

Dense Glass — Glass Mat Gypsum Board

Dense Glass (Georgia-Pacific DensGlass, USG Securock) is a glass mat-faced gypsum panel that eliminates paper facing entirely. The glass mat facing resists moisture penetration and does not support mold growth — making it the preferred substrate for wet areas, exterior sheathing, and high-humidity environments.

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Boston MA & New England
Licensed & Insured Contractor
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Dense Glass products are used as exterior wall sheathing under weather barriers, as tile substrate in showers and wet areas, and as interior panels in high-humidity commercial environments. Smooth installs DensGlass and similar products for both residential and commercial applications throughout the Boston area.

Key Benefits

Glass mat facing — no paper

Paper is the nutrient source for mold on gypsum. Glass mat eliminates this entirely

Moisture resistance

Can withstand extended weather exposure during construction — critical in New England's wet climate

Mold and mildew resistant

Independently tested and listed for mold resistance

Tile-ready

Appropriate substrate for tile in wet areas when properly waterproofed

Exterior sheathing application

Used as wall sheathing under rainscreen and EIFS systems

Our Process

Application Review

Wet area, exterior, or interior application confirmed. Appropriate product specified.

Installation

Panels installed with appropriate fastening per manufacturer requirements.

Joint Treatment

Joints and corners treated with appropriate tape and compound or mesh.

FAQ

DensGlass or cement board is recommended and often required by tile manufacturer warranties in wet areas. Standard drywall is not appropriate behind tile in showers or wet areas.
DensGlass is gypsum-based with glass mat facing — lighter and easier to cut, slightly less water resistant than cement board. Cement board is fully waterproof and preferred in the wettest applications.

Free Estimate

Response within 2 hours. Project scope reviewed on every quote.

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Energy Free Estimates Available

Most MA homeowners qualify for incentives on qualifying insulation and air sealing projects — amount depends on eligibilitys. We handle all paperwork.

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Free estimate. Project scope reviewed. Response within 2 hours, Mon–Fri.

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