Synthetic roofing underlayment is to be laid horizontally parallel to eave with printed anti slip side up starting at the bottom of the lowest roof eave with a 1 5 underlayment overhang at the eave covering the pre installed eave drip edge.
How to install underlayment on roof.
Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive.
Now it s time to install the underlayment and flashing.
Install a layer of roofing insulation as recommended by the roofing manufacturer.
Using your staple gun secure the felt to the roof.
These pieces act as a weather proofing and protective barrier between your house and the elements helping keep water and cold temperatures out.
Install the underlayment along the roof decking.
Step 5 nailing the underlayment.
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If necessary adjust how the material ls aligned to keep it hanging over the decking material.
How to install felt underlayment for a new roof.
Inspect the underlying roof sheathing for damage and make any needed repairs.
Smooth out the underlay to prevent any bumps.
Install drip edge at the roof eave edges.
Overhang the roof rake edge 1 5 and cover the.
Here is a video about roofing underlayment.
In roof areas where roof planes meet to form valleys which naturally channel high water flow in wet weather and other roof penetrations such as skylights plumbing vents roof to wall intersections are also important roof areas that can benefit from peel and stick membrane underlayment installation.
Start by laying asphalt felt or other underlayment over the roof.
Start from the top of the roof and remove the old shingles along with the flashing underlayment and vents.
Installing a roof is much more than just nailing shingles onto some boards.
How to install roofing underlayment the proper way.
It starts with installing solid decking usually plywood or oriented.