Clean and prepare the.
Overlap on roof felt.
A conventional roll of felt is enough for 432 square feet.
Now you ll use the top line on the first row as a guide for installing the second row.
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.
The first step in felting a shed roof either angled or flat is calculating the exact.
How much should i overlap my felt underlayment on my roof.
Laying the felt the roofing felt should be applied in layers that 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.
Once again leave 8 inches of excess at the side of the bottom edge of the felt.
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.
As before you will need to make sure that there are no air bubbles between layers.
On roof valleys ensure the breather membrane is extended by a minimum of 300mm on each side measured from the centre of the valley.
Position the second row of felt so that it overlaps the first row.
Overlap the end of a roll about 4 inches with the start of a new roll and fasten both pieces to the.
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.
The drip edge should extend at least 2 inches on the roof.
Felt underlayment can overlap more than 2 inches to provide an adequate barrier.
The process of felting a shed roof step 1.
For a more permanent roof coverage use roll roofing.
Ensure that the felt lies flat and smooth before securing it.
As you work the paper can be tacked down in the center so it won t blow away.
Use a heavy duty felt for long term weatherproofing.
Now place the third layer on top.
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.
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.
Buy the roof felt.
Since you will have overlap.
Felt comes in either 15 pound or 30 pound ratings.
Roofing felt is required to overlap 2 inches over the lower felt course.