How To Install Underlayment On A Hip Roof

Learn more about how to install owens corning proarmor synthetic roof underlayment.

How to install underlayment on a hip roof.

Position the first row of roofing felt flush on the bottom with the edge of the gutter apron. For more information on this approach see how to install rigid foam on top of roof sheathing. Start from the top of the roof and remove the old shingles along with the flashing underlayment and vents. Install a single vertical length of underlayment roll centrally over hips and down valleys before weaving horizontal underlayment across the valleys and hips.

Pick a corner to start placing the plywood sheathing. Use nails to tack the sheet in place on the rafters to hold it in place while you work. Inspect the underlying roof sheathing for damage and make any needed repairs. Sheathing goes onto a roof prior to the final roofing material e g shingles.

Start at the bottom of one side of the roof at the right or left edge. Peel the release liner from the membrane. Nail the plywood sheathing to the rafters. This also applies to metal hip or valley flashings that may be specified.

Install underlayment a minimum of 6 inches up roof protrusions or vertical abutments. Press the membrane of the self adhering roofing underlayment in place with heavy hand pressure to ensure the desired adhesion to the roof deck. Hammer down any large nails that are exposed by the removal. Start the roof felt at one bottom corner of the roof.

Cut the membrane into 10 to 15 foot lengths and re roll loosely. How to lay roofing felt on a hip roof. 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.

Press the tabs firmly to make crisp corners with no gaps and attach with roofing nails. This would create a great roof but it would be expensive and it s probably overkill. Where drip edge pieces meet overlap them by at least 2 inches. Install a layer of roofing insulation as recommended by the roofing manufacturer.