How To Frame A Hip Roof Over A Bay Window

The first step in the process of erecting the hip roof is to get the ridge beam into place at the top of the roof.

How to frame a hip roof over a bay window.

Then take the rafters and cut them at the right length. To start building the frame of the roof use a 2 by 6 fascia board to create the perimeter of the roof by nailing in onto the back wall. You may also want to install long screws to affix the board even more securely. Attach 4 6 centering rafters and lift the ridge beam into place.

Then use the chart from your online roof frame calculator to cut the rafters to size and nail them into place. Unlike a traditional hip roof the roof over a bay window with 45 degree sides is based on an octagonal roof but most people don t know how to frame an octagonal roof. Fill the frame with some fiberglass batt insulation and close the frame with some plywood. To fix it even more securely you can drill longer screws.

Place the 4 6 common rafters in their designated positions along the 2 longest walls and nail them firmly to the wall with a nail gun. Then create the perimeter of the roof using the 2 by 6 sub fascia boards. To get started building the bay window roof frame take a 2 by 6 ledger board and nail it onto the back wall. Fix them in place.

In this video rick arnold shows us his simplified method for laying out and building a bay roof. We asked one of our veteran builders to show us how it s done. Then use 2 6 sub fascia boards to create the perimeter of the roof.