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I'm building a porch and intend to cut a lean-to roof for it.
My porch will be 1.2m horizontally from the house to the wall plate with a 25 degree pitch, I was going to use 4x2 C16 rafters at 580mm spacings (four rafters along the width of the porch). Tiles will be Redland 49. According to the Redland website I'll have to use large (2x1) battens. I was planning on using the same 4x2 C16 for the ceiling joists.
Do those sound adequate?
Do I need any cross-bracing between rafters or joists?
Is it correct that the first and last rafters should be above the wall cavity?
I was going to cut the rafters 300mm or so oversize, then when they are all fixed work out the size of fascia and soffit I need.
My plan is to match the house by using the same (Redland 49) tiles, and building the gable ends up to the roofline. I believe I use fibre cement undercloak between the gable brickwork and the tile overhang?
This will be my first time building a roof and I may be back with more questions!
Thanks in advance
My porch will be 1.2m horizontally from the house to the wall plate with a 25 degree pitch, I was going to use 4x2 C16 rafters at 580mm spacings (four rafters along the width of the porch). Tiles will be Redland 49. According to the Redland website I'll have to use large (2x1) battens. I was planning on using the same 4x2 C16 for the ceiling joists.
Do those sound adequate?
Do I need any cross-bracing between rafters or joists?
Is it correct that the first and last rafters should be above the wall cavity?
I was going to cut the rafters 300mm or so oversize, then when they are all fixed work out the size of fascia and soffit I need.
My plan is to match the house by using the same (Redland 49) tiles, and building the gable ends up to the roofline. I believe I use fibre cement undercloak between the gable brickwork and the tile overhang?
This will be my first time building a roof and I may be back with more questions!
Thanks in advance