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Interlock Metal Roofing
  • Company
    • About Us
    • Catalog
    • Blog Posts
    • Roofing Guide
    • Quality Assurance
    • Industry Partnerships
    • Community Support
    • Environmental Responsibility
    • President’s Message
    • Mission Statement
    • Events
    • We’re Hiring!
  • Products
    • Slate​​
    • Cedar Shingle
    • Shake
    • Mediterranean Tile
    • Standing Seam
    • Copper
  • Warranty
  • Specifications
    • Manuals
    • Testing Reports
    • Tax Credits
    • CRRC Rated
    • Coating
    • Color Guide
    • Roof Visualizer ↪
    • Downloads
  • Gallery
  • Reviews
  • Contact Us

Cover board

Home / Glossary

A cover board is a layer of rigid insulation or other flat material that is installed over the roof deck before the roofing membrane is applied. The purpose of the cover board is to provide a smooth, even surface for the roofing membrane and to protect the underlying insulation from damage.

Cover boards can be made from a variety of materials, including fiberboard, gypsum, perlite, and high-density polyisocyanurate. They are typically installed in a single layer, although multiple layers may be used for added protection or to achieve specific design requirements.

Some of the benefits of using a cover board in a roofing system include:

  • Improved wind uplift resistance: Cover boards can help to improve the wind uplift resistance of the roofing system, especially in areas with high wind loads.
  • Enhanced durability: Cover boards can help to protect the underlying insulation from damage caused by foot traffic, construction debris, and other sources of wear and tear.
  • Increased thermal performance: Some types of cover boards have insulating properties, which can help to improve the overall thermal performance of the roofing system.

Overall, the use of a cover board can help to improve the performance and longevity of a roofing system, while also providing a smoother and more even surface for the roofing membrane to be applied.

Interlock Metal Slate Roof
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© 2023 The Interlock Group. Interlock®, Interlock Lifetime Roofing Systems®, Alunar®, and Never Re-Roof Again.® are registered trademarks of I.E.L. Manufacturing Ltd. and are used under license.

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