Flat Roof Decking Thickness

A flatter roof with rafters farther apart may need a thickness of up to inch.

Flat roof decking thickness.

Call toll free 1 877 860 9333. 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. Another issue that many people encounter is what size plywood the roof may need. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

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. 8d ring shank nails should be used instead. 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.

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. Timber boarding suitable for roof decks should be a minimum 19mm nominal thickness planed and closely clamped together tongued and grooved or closely butted. Waterproof decking for flat roof decks need to be walkable and nice to look at. Here s how tufdek waterproof decking stands out on a flat roof deck.

8am to 4pm pst. What size plywood for the roof. Sheathing should be a minimum of 19 32 inch thick. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.

Never attach roof sheathing with staples. 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 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. Loads will vary with the.