Overlap On Roof Felt

The felt must be flush at the rake side edges have 4 inch overlaps where two pieces are joined and 6 inch overlaps on hips and ridges.

Overlap on roof felt.

Position the second row of felt so that it overlaps the first row. If the roof felt tears cut a piece large enough to cover the tear with lots of overlap slip the top under the next lap. Felt comes in either 15 pound or 30 pound ratings. The vertical leg of the drip edge should be at least 1 5 inches wide and extend at least 0 25 inches below the sheathing.

A conventional roll of felt is enough for 432 square feet. The process of felting a shed roof step 1. Continue along the roof to the other end and trim the felt flush at the end with a utility knife. On roof valleys ensure the breather membrane is extended by a minimum of 300mm on each side measured from the centre of the valley.

Roofing felt is required to overlap 2 inches over the lower felt course. The drip edge should extend at least 2 inches on the roof. Clean and prepare the. Tack the roofing felt down with 1 4 staples using an air compressor with a pneumatic stapler a hammer tacker or a staple gun every 12 inches.

Now place the third layer on top. Must be installed at the rakes and eaves of the roof adjacent pieces of drip edge should overlap at least 2 inches 51 mm. For a more permanent roof coverage use roll roofing. Laying the felt the roofing felt should be applied in layers that overlap.

Buy the roof felt. As you work the paper can be tacked down in the center so it won t blow away. Since you will have overlap. Either walk over the felt with your feet to ensure a tight secure fit or pat it down with your trowel.

Be sure that there are 2 inches of overlap with the previous layer and that some felt covers the edge of the roof. Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it. Felt underlayment can overlap more than 2 inches to provide an adequate barrier. If there is no ridge ventilation the breather membrane should go over the ridge and overlap each side of the ridge line by the required overlap.

Overlap the end of a roll about 4 inches with the start of a new roll and fasten both pieces to the. As before you will need to make sure that there are no air bubbles between layers. Once again leave 8 inches of excess at the side of the bottom edge of the felt. Ensure that the felt lies flat and smooth before securing it.

Use a heavy duty felt for long term weatherproofing.