What is the typical length of nails used for square butt strip shingles?

What is the typical length of nails used for square butt strip shingles?

• A. 3/4 inch
• B. 1 inch
• C. 1-1/4 inch
• D. 1-1/2 inch

Answer: (B)

Nail length for square butt strip shingles is chosen to balance holding power with avoiding over-penetration. The nail must penetrate through the shingle and into the roof deck enough to resist wind uplift, but it shouldn’t be so long that it protrudes through the decking or risks splitting the wood. For this type of thin strip shingle, a one-inch nail is commonly used because it reliably embeds into typical roof decks (like 1/2 to 3/4 inch thick substrates) and provides solid hold without excessive protrusion. Always follow manufacturer specifications, since deck thickness and shingle design can change the required length.

Nail length for square butt strip shingles is chosen to balance holding power with avoiding over-penetration. The nail must penetrate through the shingle and into the roof deck enough to resist wind uplift, but it shouldn’t be so long that it protrudes through the decking or risks splitting the wood. For this type of thin strip shingle, a one-inch nail is commonly used because it reliably embeds into typical roof decks (like 1/2 to 3/4 inch thick substrates) and provides solid hold without excessive protrusion. Always follow manufacturer specifications, since deck thickness and shingle design can change the required length.