Roofing Using 2x4

2x4 x8 feet boards.

Roofing using 2x4. Rafters are on 2 ft spacing. Without even running the calculations i would say there is a good chance the 2 4 purlins will not make the deflection criteria required for a roof framing member supporting steel. Floor joist on 16 inch centers. Rafters to 2x4 with joist hangers.

It s made 11 winters here and look like the day i finished it. In bending 2 4 2 purlins would work at 12 on center however i personally would not want to walk on top of them. 1 3 of the way from each in to keep it from spreading from snow load. The most common roofing materials used in the united states include shingles membrane roofing and ceramic tile all of which have different life spans.

If you have a simple gable shed roof then using 2 4 rafters makes more sense unless you have a very large shed. For this example a section of roof is 20 feet wide. Front and sides will sit on deck on a 2x4 wall with studs 24 oc and screened in. 2 pieces 12 feet aluminum.

For roofs that won t experience heavy snow loads a gable roof can span up to 22 with 2 4 rafters. Measure each section of the roof from side to side parallel to the line of the fascia board. The metal roof purlins spacing must be done correctly within narrow tolerances. Roof will be roughly 12 x 16.

2 pieces 2x4 x10 feet boards pressure treated. Built on 4 12 pitch roof with 1 2 ply decking and shingles. For roofs that will experience heavy snow or wind and will span the same distance use 2 6 rafters. I put 2 2x4 joist about.

The wider the roofing panels the greater spacing distance you should put. Access the roof using an extension ladder. A rough 2x4 had a lot more strength that a finished one. 60 pieces 2x4 x12 feet boards.

One foot overhang so could say 11x16. 5 pieces 2x4 x12 feet boards pressure treated.