Roof Sheathing Thickness Ohio

I was told that the spring of 2008 it changed.

Roof sheathing thickness ohio.

Underlayment shall be applied in accordance with section 1507 2 8 except all laps shall be a minimum of 4 inches 102 mm. Where the roof sheathing is less than 3 4 inch 19 1 mm thick the fasteners shall penetrate through the sheathing. I am trying to find out the decking thickness for 24oc. 802 4 3 hips and valleys.

Loads will vary with the. Roof sheathing thickness unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. That s considered to be the minimum. This is for a re roof of a shed style roof of a garage with 2x6 rafters not trusses.

Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing. Allowable spans for lumber floor and roof sheathing a b for si. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Hip and valley rafters shall be not less than 2 inches 51 mm nominal in thickness and not less in depth than the cut end of the rafter.

8d ring shank nails should be used instead. Does anyone know what is the current ohio residential code is for roof decking. Wall and roof intersections at gutters wherever there is a change in roof slope or direction and around roof openings. Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively.

Rafters shall be nailed to the top wall plates in accordance with table 602 3 1 unless the roof assembly is required to comply with the uplift requirements of section 802 11. Where flashing is of metal the metal shall be corrosion resistant with a thickness of not less than 0 019 inch 0 483 mm no. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load. Underlayment shall be attached using metal or plastic cap nails with a head diameter of not less than 1 inch 25 mm with a thickness of at least 32 gage 0 0134 inch 0 34 mm sheet metal.

Sheathing should be a minimum of 19 32 inch thick. 1 inch 25 4 mm. The typical thickness range for sheathing is 3 8 to 3 4 inch. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.