How To Build A Bay Window Roof

Most of the time a bay window will have a hip roof that s constructed using 45 degree angles.

How to build a bay window roof.

All major window manufacturers offer angled bay windows in both 30 and 45 degree configurations. You ll also have to plan for the bay window roof. The secret to a good looking roof is having the right proportions. But once the window its frame and its cap are in place you can get started framing the roof.

To build a roof cab construct a wood frame out of 2 by 4 ft 0 61 by 1 22 m boards that matches the base of your bay window s roof and mirrors the shape at a 90 degree angle on your wall. Plan out the roof. Most also offer 90 degree box bays. Bay roof a bay roof is a three sided roof framed against a vertical wall of a building usually covering a projection from the building such as a bay window or breakfast nook.

Then miter 4 joists at a 45 degree angle on both sides and install them around the exterior opening of the frame to reinforce it. Each bay type comes in hundreds of standard and custom sizes to fit any opening. A box bay with a glass roof is known as a garden bay or greenhouse window. A few make 60 degree bays.

It s time to finish planning the roof frame. We asked one of our veteran builders to show us how it s done.