The number and placement of nails for shingles are critical for both meeting building codes and maintaining your roof’s warranty. Typically, asphalt shingles require four to six nails per shingle, depending on the product and local wind conditions. Nail placement matters because improper nailing can allow shingles to lift or blow off in strong winds. Nails should generally be placed just above the adhesive strip, aligned horizontally and spaced evenly. If nails are placed too high, low, or not driven flush, they won’t hold well, increasing the risk of leaks and damage. Building codes often reference manufacturer specifications, so it’s important to check your shingle packaging or product literature. Some regions with high wind zones may have stricter nailing patterns or use ring shank nails for extra hold, so local code requirements should always be confirmed before installation.
For homeowners wanting to perform a safe DIY check, climb a sturdy ladder and look closely at visible shingles, noting if nails are in the correct position and flush with the shingle surface. Visible signs of missing or raised nails, loose shingles, or gaps along the edges suggest poor nailing. If in doubt, it’s wise to call a professional roofer, especially when climbing on the roof or if you see signs of premature wear. When speaking with a contractor, it’s helpful to ask, “How many nails per shingle will you use?” and “Can you show me your nail placement plan to comply with both code and the shingle warranty?” This ensures the work meets all requirements for durability and maintains warranty coverage, which can prevent costly repairs down the line.