How To Install Underlayment On A Hip Roof

Install a layer of roofing insulation as recommended by the roofing manufacturer.

How to install underlayment on a hip roof.

Start the roof felt at one bottom corner of the roof. This would create a great roof but it would be expensive and it s probably overkill. Roofing felt comes in rolls that feature pre marked lines 2 to 3. Adding various types of roof vents either hip vents or mushroom vents for example could help you get close to code requirements for venting.

Sheathing goes onto a roof prior to the final roofing material e g shingles. Peel back 1 to 2 feet of release liner align membrane. Tack it in place at the corner with the end flush with the end of the roof and the bottom edge of the roll right along the bottom of the roof. This also applies to metal hip or valley flashings that may be specified.

Press the tabs firmly to make crisp corners with no gaps and attach with roofing nails. Hammer down any large nails that are exposed by the removal. How to lay roofing felt on a hip roof. Where the drip edge meets a valley or a hip cut the pieces with overlapping tabs.

Install underlayment a minimum of 6 inches up roof protrusions or vertical abutments. Cut the membrane into 10 to 15 foot lengths and re roll loosely. Use nails to tack the sheet in place on the rafters to hold it in place while you work. For more information on this approach see how to install rigid foam on top of roof sheathing.

Position the first row of roofing felt flush on the bottom with the edge of the gutter apron. Install a single vertical length of underlayment roll centrally over hips and down valleys before weaving horizontal underlayment across the valleys and hips. Start from the top of the roof and remove the old shingles along with the flashing underlayment and vents. Learn more about how to install owens corning proarmor synthetic roof underlayment.

Press the membrane of the self adhering roofing underlayment in place with heavy hand pressure to ensure the desired adhesion to the roof deck. Pick a corner to start placing the plywood sheathing. Where drip edge pieces meet overlap them by at least 2 inches. Nail the plywood sheathing to the rafters.