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Interlock Metal Roofing
  • Company
    • About Us
    • Catalog
    • Blog Posts
    • Roofing Guide
    • Quality Assurance
    • Industry Partnerships
    • Community Support
    • Environment
    • 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

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Home / Resources

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  • Interlock Lifetime Roofing Systems Catalog (2023)
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  • ESR - 1790
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  • Interlock® Slate / Cedar Shingle Specification Manual
  • Interlock® Shake Specification Manual
  • Interlock® Standing Seam Specification Manual
  • Interlock® Mediterranean Tile Specification Manual
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  • 2021 — Energy Efficiency Federal Tax Credit
  • 2020 — Energy Efficiency Federal Tax Credit
  • 2017 — Energy Efficiency Federal Tax Credit
  • 2016 — Energy Efficiency Federal Tax Credit
  • 2014 — Energy Efficiency Federal Tax Credit
  • 2013 — Energy Efficiency Federal Tax Credit
  • 2012 — Energy Efficiency Federal Tax Credit
  • 2011 — Energy Efficiency Federal Tax Credit
  • 2010 — Energy Efficiency Federal Tax Credit
  • 2009 — Energy Efficiency Federal Tax Credit
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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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