You then have rafters running down from this ridge board and resting on the top wall plates.
Roofing with 2x4.
For roofs that won t experience heavy snow loads a gable roof can span up to 22 with 2 4 rafters.
The back of the roof will attach to house with 16 2x4 and lag screws.
Front and sides will sit on deck on a 2x4 wall with studs 24 oc and screened in.
Sometimes the rafter will have a tail and extend out past the wall so that you have a soffit or overhang.
He says lowes told him he could use 2x4 for rafters with 1 2 inches plywood for asphalt shingles.
Tin roofing also known as metal roofing is considered more durable than composition or wood shingles.
If you have a simple gable shed roof then using 2 4 rafters makes more sense unless you have a very large shed.
I told him plywood and asphalt shingles would be too heavy.
The rafters are 18 foot long without beams or trusses garage 28x40.
For example if your roof measures 10 feet 3 0 m x 10 feet 3 0 m and the slope of the roof is 12 12 giving a slope factor of 12x12 12x12 12 converts to 1 414 in decimal form you would multiply 10 x 10 x 1 414 to get the total of 141 square feet of roofing.
He s already got the 2x4 up for rafters and it s ready for laying plywood tomorrow.
For roofs that will experience heavy snow or wind and will span the same distance use 2 6 rafters.
Installing wood stripping under a tin roof.