How To Build A Bay Window Roof

It s time to finish planning the roof frame.

How to build a bay window roof.

Each bay type comes in hundreds of standard and custom sizes to fit any opening. A projection with four or more angled faces is a bow and cannot be calculated with easy rafters. Plan out the roof. Installing bay windows are a gorgeous way to fill your house with natural light but unfortunately for the do it yourselfer every bay window must come with a bay window roof on the bright side the bay window roof can be an equally charming addition to the façade of your house but on the downside it certainly takes a little more labor and know how to construct especially in terms of.

We asked one of our veteran builders to show us how it s done. All major window manufacturers offer angled bay windows in both 30 and 45 degree configurations. A few make 60 degree bays. Most of the time a bay window will have a hip roof that s constructed using 45 degree angles.

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. But once the window its frame and its cap are in place you can get started framing the roof. The secret to a good looking roof is having the right proportions. 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.