The video refers to over-angled nails as nails that are driven into the roof hip at an angle instead of going straight into the wood. This creates a situation where the tips of the nails protrude out of the roof rafter at an angle, often referred to as "shiners."
Causes of Over-Angled Nails
Nailer Over-Compensation: The nailer might have driven the nails in at an excessively steep angle. This can happen due to user error or malfunction of the nailing tool.
Wood Grain: The grain of the wood itself can cause the nails to deflect from their intended straight path. Even if the nails are driven in at a slight angle, the wood grain can force them to curve out at a much sharper angle, resulting in shiners.
Why Over-Angled Nails Are a Problem
Compromise the structural integrity of the roof: Nails that are not driven straight into the wood may not provide the necessary holding power, potentially weakening the roof structure.
Create safety hazards: Protruding nails pose a safety risk to workers who might come in contact with them during construction or maintenance.
Detract from the aesthetics of the roof: Shiners can give the roof an unfinished and unprofessional look.
Solutions for Over-Angled Nails
Remove the existing nails: The first step involves pulling out the over-angled nails completely.
Drive in new nails at a proper angle: Once the shiners are removed, new nails should be driven in straight, ensuring they go into the wood at a perpendicular angle.
Greg concludes by jokingly advocating for a "no shiner policy" on construction sites, highlighting the importance of proper nail placement in roof overhangs.
Additional Tips
Nailer Settings: Ensure the nailing tool is set to the appropriate angle for the specific application.
Nail Placement: Be mindful of the nail placement during installation. Avoid driving nails at an angle close to the edge of the wood.
Pilot Holes: Pre-drilling pilot holes can help guide the nails and reduce the chance of them deflecting due to the wood grain.
By following these tips and the solutions mentioned in the video, builders can ensure proper nail placement in roof overhangs, leading to a stronger, safer, and more aesthetically pleasing roof structure.
