DensDeck Roof Board
- Product Descriptive Name
- Glass Mat Faced Gypsum Cover Board
- Product Short Description
- DensDeck Roof Board is a gypsum cover board with a glass mat facer.
Meets the requirements of ASTM C 1177
Fire Performance: FM Class 1 for fire barrier requirements and UL Class A unlimited slope with excellent surface burning characteristics. 5/8" thickness meets the requirements of Type X per ASTM C 1177.
Moisture and Mold Resistance: Scores a 10, the highest performance level for mold resistance, when tested in accordance with ASTM D 3273.
The Marcus High School reroof project came about because the previous system was damaged by hail. The contractor up for such a large project was Martin Tomlinson Roofing, and they installed a two ply bituminous system made by Johns Manville.
Summit High School (SHS) expanded its main building by 35,200 square feet. Arapahoe Roofing and Sheet Metal, Inc. won the job to roof this major addition. As a long-time Johns Manville partner, Arapahoe worked with the District’s facilities manager to choose a complete JM system that included 75 mil reinforced membrane as specified by the architect.
Johns Manville offers one of the most comprehensive portfolios of commercial low-slope roofing solutions. We have a long standing dedication to providing solution-based systems for building owners.
Here you will find quick links and cheat sheets to Johns Manville roofing systems code approvals and ratings.
Guarantees and Roof Maintenance
Support services can include: conceptual product information, building science, wind uplift data, national and local code understanding, FM Global® and UL® regulations, fastening patterns and sheet layouts, installation guidelines and standard details.
Re-roofing mechanically attached or ballasted insulated single-ply systems now have the potential for recycling versus contributing to a landfill.
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