Flat Roof Decking Thickness

Tuff clad pvc metal flashing.

Flat roof decking thickness.

Timber boarding suitable for roof decks should be a minimum 19mm nominal thickness planed and closely clamped together tongued and grooved or closely butted. Call toll free 1 877 860 9333. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. Never attach roof sheathing with staples.

Waterproof decking for flat roof decks need to be walkable and nice to look at. Osb roof decking thickness 7 16 1 2 or 5 8 if were using osb we get 9 16 we dont worry about getting both 7 16 and 9 16 for walls then the roof we just get all of the same. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. A flatter roof with rafters farther apart may need a thickness of up to inch.

What size plywood for the roof. Sheathing sizes osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load. This way no worrying about grabbing scraps to fill in small spots and not having the correct thickness. 8am to 4pm pst.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Keep in mind that the load of the roof still plays a role in the plywood thickness. The typical thickness range for sheathing is 3 8 to 3 4 inch. Another issue that many people encounter is what size plywood the roof may need.

8d ring shank nails should be used instead. When using this type of deck in conjunction with bonded vapour control layers it will be necessary to first install a random nailed isolating layer prior to the installation of the main roofing system to cover the joints between adjacent boards. Sheathing should be a minimum of 19 32 inch thick. Loads will vary with the.