How To Build A Bay Window Flat Roof

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.

How to build a bay window flat roof.

But before i begin the roof framing i have to add a roof overhang using a strap of soffit material. To get started building the bay window roof frame take a 2 by 6 ledger board and nail it onto the back wall. Then to get the 45 degree angles i measure in 17 7 8 inch from each end and draw the lines. All major window manufacturers offer angled bay windows in both 30 and 45 degree configurations.

Cut and fit rafters. A few make 60 degree bays. Although approximately twice the cost of the lead replacement choice slates or tiles will last up to 100 years as long as the window cleaner doesn t break them. You may also want to install long screws to affix the board even more securely.

It s time to finish planning the roof frame. Build the wall cleat. Most also offer 90 degree box bays. First i draw a rectangle centered on the sheet using my 62 by 17 7 8 measurements.

Http www fixmyroof co uk videos and guides bay window roof how to fibreglass a bay roof for links to fibreglass supplies and additional help please visit. Before you can start on the roof you ll have to install the bay. Flat to pitch bay roof conversion a pitched roof for bay windows another option to consider is converting a traditional flat bay roof into a pitched tile or slate bay roof. Now i have an exact replica of the bay window top.

Install the bay window after careful planning. The secret to a good looking roof is having the right proportions. Then create the perimeter of the roof using the 2 by 6 sub fascia boards. A box bay with a glass roof is known as a garden bay or greenhouse window.