Flat Roof Decking Thickness

Loads will vary with the.

Flat roof decking thickness.

Tuff clad pvc metal flashing. Call toll free 1 877 860 9333. A flatter roof with rafters farther apart may need a thickness of up to inch. Never attach roof sheathing with staples.

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. 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. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. Timber boarding suitable for roof decks should be a minimum 19mm nominal thickness planed and closely clamped together tongued and grooved or closely butted.

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. Another issue that many people encounter is what size plywood the roof may need. 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.

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. What size plywood for the roof. 8d ring shank nails should be used instead. 8am to 4pm pst.

Waterproof decking for flat roof decks need to be walkable and nice to look at. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Here s how tufdek waterproof decking stands out on a flat roof deck. The typical thickness range for sheathing is 3 8 to 3 4 inch.