About 0 49 0 79 per foot.
How many felts are needed in a type b roof.
L style or type c.
For the 1 150 attic ventilation requirement simply double the amount of exhaust and intake calculated.
Installing roof felt is a two person job.
Drain strainer m60 rubrpoly flashing sheets coverboard insulation thermal insulation clamping ring drain strainer drain.
This guide will use the more durable 30 roofing felt although you can use 15 felt.
The angle or pitch of your roof can also affect the type amount and cost of the materials you ll need.
There are almost as many types of roof flashing as there are parts of the roof.
Is roofing felt underlayment needed under roof shingles tiles slate wood shingles or shakes.
Metal deck sump pans are prohibited.
Ridge static attic vents 384 00 minimum sq.
Step by step guide for felting a flat roof follow the 10 steps below in order to felt a flat roof.
As stated in best practices guide to residential construction.
About 1 30 1 60 per foot.
It s a long single.
Must be installed at the rakes and eaves of the roof.
These are the key types of roof flashing you need to understand.
About 0 60 0 89 per foot.
After all each roof feature needs protection.
The felt paper is typically used in most roofing jobs as a release between the two materials.
Of net free area of intake needed at or near the soffit.
Of net free area of exhaust needed at or near the ridge.
This correction factor will take into account the greater area of the roof due to the pitch.
Building codes for drip edges.
The roof deck should be sound and level before laying the underlayment.
Fifteen pound or heavier felt underlayment is required by code in some areas.
Type 1 dead level asphalt is prohibited in the drain sump area.
If your roof pitch is 3 12 or 4 12 multiply by 1 25.
Continuous flashing is also called apron flashing because it acts a lot like an apron.
F style or type f.
Building codes for drip edges may vary per location.
Multiply the total area determined in step one by a correction factor to account for the roof pitch.
The weight or thickness needed will vary by regions but 15 pound suffices in most locales.
For example you may need to pay double the cost in asphalt shingles if your roof has a 12 12 pitch a rise of 12 inches 30 cm per 1 foot 0 30 m as opposed to a 4 12 pitch.
Use 1 4 for up to a 9 12 pitch.
The most common as we said before is the regular felt paper.
T style or type d.
