Roofing Screws Too Long For Metal Roof

Water damage to underlying material.

Roofing screws too long for metal roof.

The metal roof paneling is supposed to end up about two to three inches below the home s vented ridge and should be two to three inches beyond the roof s eaves according to absolute steel metal roofing instructions. The purpose of the spacing is related to the drip edge. This applies to the gable edge and the bottom end of the roof. 9 10 12 and procap metal to wood screws are 1 4 hex head screws 12 14 and proz metal fasteners are 5 16 hex head screws.

Generally it is best to place each roofing screw about one and half to two feet apart but no more than that. If water has seeped under the roof material the underlying material may become damaged. Extending the panel too long over the edge. Screws may not be able to grip the underlying material enough to properly hold the metal roof down.

In some homes this means using 1 inch screws to get the appropriate distances. Designed to fasten multiple layers of metal roof panels metal siding panels attach trim to metal building sheets or seal lap joints of metal building sheets. Screws will not grip well on a rotted wood surface. Remember a screw down metal roof has the fasteners exposed through the top of the panels.

Pipe flashing covered by too few screws. Some roofers make the mistake of letting the metal panels extend too much or too little over the roof s edge.