Flat Roof Sheathing Thickness

Roof material then covers all.

Flat roof sheathing thickness.

Get free estimates from local roofing contractors. Steeper roofs tend to have thinner sheathing due to not much weight being applied to the roof while flat and low sloop roofs that are likely to gather weight from precipitation or people walking on it. 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. Installing sheathing on a flat roof is much easier than working on a peaked roof.

Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. The typical thickness range for sheathing is 3 8 to 3 4 inch. If your roof is more on the flatter side then it s expected to have a heavier load.

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. The sheathing is the base you lay over the rafters that holds the roofing felt and shingles. On the upcodes website. That s considered to be the minimum.

A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. On the upcodes website. 2018 international residential code.

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. Contains sections covering roof framing roof sheathing and roof ventilation. Sheathing comes in different thicknesses and what type of roof you have will help designate what type of thickness you need. As an example of what you can find in chapter 8 of the 2018 irc see.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Plywood is typically.