Small Porch Roof - How To Join To House?

[Spuggy]

Hi All,

Just finished the blockwork to a small (2m x 3 enclosed porch built off the front wall of the house and I'm now starting to cut the rafters for the pitched roof. I have a couple of questions before I crack on:

Is it ok to fix the first rafters to the house wall, or do they need spacing away?

Does the ridge beam need to sit inside the wall, or is it ok to butt up against the wall?

Any help greatly appreciated.

Cheers, Paul.

 

[^woody^]

If you are plasterboarding the underside, then a 25mm gap between rafter and wall would help the fixing of the boards. Probably the same for the tile laths to the minimise risk of end spliting. Othewise its not a big deal.

If you do leave a a gap, make sure to pack the rafter at mid span to prevent any twisting.

If this is a ridge beam, as apposed to a ridge board, then yes it needs to sit in the wall.

If a ridge board, it would certainly be good practice and would help a lot with the roof framing and bracing if it was in the wall too. But it would not stictly need to be

 

[Spuggy]

Thanks for your help Woody - much appreciated.