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.
How to build a bay window roof.
Plan out the roof.
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.
You ll also have to plan for the bay window 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.
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.
It s time to finish planning the roof frame.
Most also offer 90 degree box bays.
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.
A projection with four or more angled faces is a bow and cannot be calculated with easy rafters.
Most of the time a bay window will have a hip roof that s constructed using 45 degree angles.
A few make 60 degree bays.
All major window manufacturers offer angled bay windows in both 30 and 45 degree configurations.
Each bay type comes in hundreds of standard and custom sizes to fit any opening.