This guide will use the more durable 30 roofing felt although you can use 15 felt.
Overlap roofing felt by.
For a flat roof the same applies start at the lower end first working to the higher end and this should resemble tiles on a roof.
30 saturated felt underlayment is specified for use as an underlayment between the roof deck and the shingles.
As you work the paper can be tacked down in the center so it won t blow away.
Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest.
Follow the 10 steps below in order to felt a flat roof.
The roofing felt should be applied in layers that overlap.
The last layer should go over both sides of the roof overlapping both side covered in felt.
Roof felt adhesive e g.
Trapped behind the guttering or if it is badly weathered it needs to be replaced.
Keep in mind that if you are looking for a more permanent type of roof coverage you might consider using roll roofing which is specially designed with a mineral coating to resist bad weather.
Atlas roofing provides a complete selection of roofing felt underlayment.
The roof felts are asphalt saturated and are manufactured with a high grade organic mat.
The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below.
Work up the roof to the peak and fold felt over the top overlapping at least 3 inches and fasten it on both sides.
If the roof felt tears cut a piece of felt that is large enough to cover the tear with lots of overlap slip the top under the next layer above it and nail it into place.
If this felt is either incorrectly situated i e.
Felt roof underlayment 30 saturated roof felt.
Tip the roof ridge is the horizontal top edge which may or may not be present on a hip 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.
Ideal for an apex flat or pent roof shed felt and roofing membrane are durable and perfect for a newly built structure or to re cover existing roofing material.
Hence this is why tiles are fitted on top of each other rather than sideways.
Step by step guide for felting a flat roof.
Do the other side of the roof the same way also with an overlap at the peak.
Bitumen in terms of materials please note that there are several different weights for the roofing felt.
Install the roofing felt on all roof sides extending it over the ridge of the roof and overlapping 8 inches there just as you did on the sides.