High-Density (HD) Polyiso Roof Cover Board

Roof cover boards are an important component in any roof assembly to provide a suitable substrate for the attachment of a membrane and enhance the overall durability of the roof system. Cover boards protect the underlying insulation from roof traffic and can allow the roof area to be used for renewable energy systems such as rooftop PV.

HD polyiso roof cover boards provide the protection of traditional material options with the added performance of thermal insulation. A typical 0.5” thick HD polyiso roof cover board has an R-value of 2.5. This means the cover board can be combined with polyiso roof insulation to meet energy code requirements for new and roof replacement systems.

Other advantages of HD polyiso roof cover boards include:

• Lightweight for installation efficiencies
  
• Superior water resistance
• Easy to cut (no special tools required)
• Virtually dust free
• Excellent impact resistance
  
• Mold resistance
  
• Long-term durability
  
  

Technical Bulletins