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Product Classification
HY High-Density Polyiso (HDP) cover boards
HUAYU
Polyiso Insulation: The Clear Winner High-Density Polyiso (HDP) cover boards are an important component in roof systems providing a stable substrate for roofing membranes as well as suitable protection for underlying insulation. HDP cover boards build on proven technology in a high-density form to deliver a high-performance alternative for the cover board market.
Lightweight
HDP cover boards on average weigh 2/3 to 4/5 less when compared to comparable like-thicknesses of various gypsum products.
Long-term durability
HDP cover boards provide ideal long-term solutions for roofing membrane systems.
Physical Property | |
Compressive Strength - psi, min | Grade 1: 80 Grade 2: 110 Grade 3: 140 |
Flexural Strength - psi, min | 400 |
Break Load - lbf, min | 20 |
Tensile Stregth - psf, min | 2000 |
Water Absorption - % vol, max | 4.0 |
Water Vapor Transmission - perm, max | 1.5 |
Minimum Thermal Resistance @ 75 +/- 2o F | 1/4” - 1.0 1/2” - 2.0 |
Benefit (carbon footprint)
HDP cover boards can be shipped with approximately three times more square feet per truckload - so fewer trucks are needed. This leads to fuel savings and reduced carbon emissions associated with transportation (assumes 48,000 pound maximum trailer capacity).
Increased additional R-value
HDP cover boards provide suitable protection to a roof system while contributing extra R-value. HDP cover boards can provide two to five times more R-value than gypsum-based products contributing to the overall system R-value
HD Polyiso | 1/4” Gypsum | 1/2” Gypsum | |
Board R-value | 1.2 - 2.5 | 0.2 - 0.36 | 0.5 - 0.56 |
Excellent water resistance
The water absorption by volume of HDP cover boards is 4%. HDP cover boards will not rot, dissolve or support mold. They maintain their integrity under adverse weather conditions for the long-term
enhancement of the roof system.
HD Polyiso | 1/4” Gypsum | 1/2” Gypsum | 5/8” Gypsum | |
Water Absorption - % volume | 4% | 9% - 12% | 8% - 11% | 8% - 10% |
Water Absorption - lb per 4 ft x 8 ft board | 1.7 - 3.3 | 3.8 - 5.0 | 6.4 - 8.8 | 8.0 - 10.2 |
Virtually dust free
HDP cover boards are a closed-cell high-density polyiso product that contribute less dust than gypsum products when cutting the boards. In addition, HDP cover boards do not cause itching, leading to overall worker satisfaction and improved productivity.
Mold resistance
HDP cover boards are resistant to the growth of mold. This makes HDP cover boards highly suitable for applications prone to elevated moisture conditions.
Polyiso Insulation: The Clear Winner High-Density Polyiso (HDP) cover boards are an important component in roof systems providing a stable substrate for roofing membranes as well as suitable protection for underlying insulation. HDP cover boards build on proven technology in a high-density form to deliver a high-performance alternative for the cover board market.
Lightweight
HDP cover boards on average weigh 2/3 to 4/5 less when compared to comparable like-thicknesses of various gypsum products.
Long-term durability
HDP cover boards provide ideal long-term solutions for roofing membrane systems.
Physical Property | |
Compressive Strength - psi, min | Grade 1: 80 Grade 2: 110 Grade 3: 140 |
Flexural Strength - psi, min | 400 |
Break Load - lbf, min | 20 |
Tensile Stregth - psf, min | 2000 |
Water Absorption - % vol, max | 4.0 |
Water Vapor Transmission - perm, max | 1.5 |
Minimum Thermal Resistance @ 75 +/- 2o F | 1/4” - 1.0 1/2” - 2.0 |
Benefit (carbon footprint)
HDP cover boards can be shipped with approximately three times more square feet per truckload - so fewer trucks are needed. This leads to fuel savings and reduced carbon emissions associated with transportation (assumes 48,000 pound maximum trailer capacity).
Increased additional R-value
HDP cover boards provide suitable protection to a roof system while contributing extra R-value. HDP cover boards can provide two to five times more R-value than gypsum-based products contributing to the overall system R-value
HD Polyiso | 1/4” Gypsum | 1/2” Gypsum | |
Board R-value | 1.2 - 2.5 | 0.2 - 0.36 | 0.5 - 0.56 |
Excellent water resistance
The water absorption by volume of HDP cover boards is 4%. HDP cover boards will not rot, dissolve or support mold. They maintain their integrity under adverse weather conditions for the long-term
enhancement of the roof system.
HD Polyiso | 1/4” Gypsum | 1/2” Gypsum | 5/8” Gypsum | |
Water Absorption - % volume | 4% | 9% - 12% | 8% - 11% | 8% - 10% |
Water Absorption - lb per 4 ft x 8 ft board | 1.7 - 3.3 | 3.8 - 5.0 | 6.4 - 8.8 | 8.0 - 10.2 |
Virtually dust free
HDP cover boards are a closed-cell high-density polyiso product that contribute less dust than gypsum products when cutting the boards. In addition, HDP cover boards do not cause itching, leading to overall worker satisfaction and improved productivity.
Mold resistance
HDP cover boards are resistant to the growth of mold. This makes HDP cover boards highly suitable for applications prone to elevated moisture conditions.
