I have a problem. In my extension with a sloped ceiling, the ceiling height will be 210cm "at the outermost". I have a window that will be placed in that wall, and it is 150cm wide. I thought about placing the rafters 12.5 cm in from each side and then get cc 120. There's not much force on 12.5 cm, but I do need a lintel as only the wall plate takes up the force. I was thinking of placing a 45x220 as a lintel that the rafters hang on. But then the roof overhang (40cm) won't have anything to rest on. I'm considering using construction angles and glue-screwing along with a 45x45 in the roof eave, that should not be a problem, right?...

These are just my thoughts, not sure how this is usually handled. Does anyone have any assistance or ideas?

17-degree roof pitch.....

//L
 
S
how high do the windows go up to the ceiling?
should they be ceiling high????
 
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You can put a beam above the hanbjälkar instead of under.
 
The hole for the window is 210cm above the floor. Then comes the wall plate. When everything is finished, the window will be at ceiling level, but since it will be a sloped ceiling, it will probably be okay. Since I am adding an extension, I have a few parameters to consider, such as the height of existing windows and a door in the same room. If the window had been 116.5cm wide, it wouldn't have been a problem, but now I have to cut the roof beams to install a support...
 
I have no ridge beams, just a completely "flat" sloped ceiling 3 meters out from the existing house. 220 + 45 in the same direction (for stability) at 17 degrees from an existing wall. 17 degrees "up to the peak" inside the room as well. On the wall plate lies 45x220 with a 40 cm overhang.
Since the window is 150 cm, 2 pieces of 220 studs need to rest on the wall plate over the window, which I believe means I need reinforcement to distribute the force to the vertical wall studs beside the window. The problem then is the eave (40 cm), which will hang in the reinforcement.
Should have had a picture, but will try with text now.....
 
So this is how it looks. The roof beams hang 15 cm over the window.

My plan is to cut off the overhang, install a support beam over the window, and then attach the roof ends to the support beam with glue-screws and angles. I'll position the support beam as far in as possible, so the roof ends can also rest on the wall plate.

//Larsa
 
  • Roof structure model showing overhead beams extended 15 cm over a window, illustrating planned modifications using a support beam for roof alignment.
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