What Are the Boards Under the Roof Called? Understanding Roof Decking and Sheathing

Learn what the boards under your roof are called and why roof decking is essential for roof support and longevity.

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The boards under the roof are commonly referred to as roof decking or sheathing. They are a crucial component of your roof structure, serving as the base upon which roof materials like shingles are installed. Roof decking is typically made from sheets of plywood or OSB (Oriented Strand Board) and provides the necessary support and rigidity to your roof. Properly installed and maintained decking is essential for the longevity and effectiveness of your roof's performance.

FAQs & Answers

  1. What is roof decking made of? Roof decking is commonly made from plywood or OSB (Oriented Strand Board), which provide a strong and stable base for roof shingles and other materials.
  2. Why is roof sheathing important? Roof sheathing provides the necessary structural support and rigidity to the roof, helping to distribute weight and secure roofing materials properly.
  3. How can I tell if my roof decking needs repair? Signs your roof decking may need repair include sagging areas, water damage, mold, or visible cracks which can compromise roof integrity.

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