Roof Sheathing For Tile Roofs

Commonly used for shingle shake or tile roofs.

Roof sheathing for tile roofs.

This article discusses the requirements specifications for roof sheathing nailers or plywood or osb and underlayment roofing felt for wood shingle wood shake roofs including roof decking needed under wood shingles shakes. 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. Zip system panels install fast and stay flat for a roof that looks as good as it performs. Tiles were designed so that lugs or short protrusions on the top backside of each tile would hook over the step sheathing.

At a minimum use a type ii no. Underlayments play a key role in tile roofing since most tile roofs are not completely waterproof. Sheathing should be a minimum of 19 32 inch thick. The typical thickness range for sheathing is 3 8 to 3 4 inch.

Roof sheathing requirements underlayment roofing felt requirements under wood shingles shakes using a shingle course felt interlayment on wood roofs using. According to modern building codes concrete and clay tiles may be installed over either solid or spaced roof sheathing. Tile roofs have an air space between installed roof tiles and the roof sheathing. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

This space reduces heat transfer and allows heat buildup to dissipate from the sheathing and roofing materials. Never attach roof sheathing with staples. 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. Increases airflow between the tiles and roof sheathing which could reduce cooling loads by a modest degree.

The spacing was to permit air to circulate under the shakes and shingles particularly shingles. Minimum roof slope also according to modern building codes concrete and clay tiles may be installed on roofs with slopes of 2 12 and greater although roofs with slopes of 4 12 and less must have a double layer of underlayment. 43 felt lapped 2 inches on horizontal joints and 6 inches at end laps. The boards were normally either 1 by 6 or 2 by 6.

8d ring shank nails should be used instead. Most roofs will be sheathed in plywood at least 3 8 inch thick. Will prolong the life of the battens and underlayment by allowing any trapped water to easily drain down the roof and water will definitely penetrate concrete and clay tiles. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.