Tomorrow I'm fitting lintels into my existing house outer and inner walls, ready to knock through into the extension I'm building.
My drawings recomend flat roof joists of 175mm x 63mm in size, but 63mm isnt a standard size not are 63mm joist hangers made (not jiffys). Therefore I'm going with 175mm x 75mm joists, which are actually cheaper as well.
Where the 219mm in hieght lintel is going, I'm going to use some 225mm joist hangers for the 175mm timbers, so that the bottom of the timber is just below the linter and the ceiling with hide the linter totally. These joist hangers will sit on the top of the lintel.
The rest of the extension roof timbers will need to sit on a timber wall plate fitted to the all of the house, but I cant get 175mm joist hangers for 75mm timbers.
So I was thinking can I cut the wall plate and roof timbers half through so the roof timber sits on the wall plate without using a joist hanger? Wont this decrease the strength of the roof joist though?
Your thoughts appreciated, thanks
My drawings recomend flat roof joists of 175mm x 63mm in size, but 63mm isnt a standard size not are 63mm joist hangers made (not jiffys). Therefore I'm going with 175mm x 75mm joists, which are actually cheaper as well.
Where the 219mm in hieght lintel is going, I'm going to use some 225mm joist hangers for the 175mm timbers, so that the bottom of the timber is just below the linter and the ceiling with hide the linter totally. These joist hangers will sit on the top of the lintel.
The rest of the extension roof timbers will need to sit on a timber wall plate fitted to the all of the house, but I cant get 175mm joist hangers for 75mm timbers.
So I was thinking can I cut the wall plate and roof timbers half through so the roof timber sits on the wall plate without using a joist hanger? Wont this decrease the strength of the roof joist though?
Your thoughts appreciated, thanks