Tile Roof Valley Detail

One of the areas of a pitched roof most prone to leakage if not constructed properly is the valley.

Tile roof valley detail.

The details shown are for roof intersections resulting in valley slopes of at least 4 1 2 per foot. Copper is recommended for valley flashing. Note that it is not necessary to mechanically fix the valley tiles. It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential.

Boral roofing cad details for roof tile. Cover valley with a strip of underlay not less than 600mm wide underlapping general underlay. By downloading and using any arcat cad content you agree to the following license agreement. Valley details for tile roofs according to the international residential code irc valley flashing in tile roofs should extend at least 11 inches each way from the valley centerline and the flashing should have a formed splash diverter at the center at least one inch high.

Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies. Ensure that continuous support is provided for ends of tiling battens on each side of valley. Tile installers are craftsmen and each develops his or her own approach to valley details.

If slate or tile is used for the roof covering 20 oz. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley. Depending on the length of the valley and the tributary area installers may flare or gradually open the width of the valley tile cut. The boral roofing cad details below are complete drawings that can easily be downloaded customized for your residential or commercial project and included in your cad library for future use.

Cover valley with a strip of underlay not less than 600mm wide underlapping general underlay. Cut adjacent tiles and tile and a half tiles so that valley tiles course in and fit neatly. Cut adjacent tiles and tile and a half tiles so that valley tiles course in and fit neatly. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off.