Before laying roof felt all rotten decking must be replaced.
How to lay a mineral felt roof.
The first bituminous membrane sheet should then be positioned onto the roof.
After this lines should be snapped every 34 as you move up the roof.
Brush off loose mineral chippings once it is in place and apply the gutter drips so they are around 25mm away from the edge of the roof.
Nail the roofing strips parallel to the roof edge set in 1 and 8 from the roof edge with nails spaced 4 o c.
You can install metal valley flashing but it is common to.
You can use your utility knife to cut a slit in the felt overhang at the very top of the roof and then fold the felt down there and nail securely at regular intervals along the gable.
You can then hide the folded over roofing felt with the use of fascia boards.
Chalk lines should be snapped 33 5 8 above the eave line.
Prepare roof edges cant strips.
How to do it.
Secure metal flashing at the edges of the roof before primer is applied.
This will enable the felt to bond with it more easily.
How to install roofing felt.
Step 2 placing the felt.
Step 1 prep work.
Install drip edge and install 9 cant strips of roll roofing material along the rake and eaves edges gable ends and lower roof edge such that the roofing strip overhangs the roof deck by 1 4 to 3 8.
Once you ve done this you re done.
You will be looking for any decking that has rotted or bowed.
Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid.
Check to ensure the roof is in good enough condition to walk over.
Install drip edge flashings roofing felt and wsu if needed.