Install the ridge tiles.
Tile roof valley flashing installation.
These are rounded and depending upon design can either be laid out end to end or in an overlapping style.
Fourth edition of the concrete and clay roof tile installation manual florida this manual summarizes for the designer applicator or developer good roofing practices and industry standards for the installation of mechanically set and mortar adhesive set tiles.
The valley flashing for a tile roof should have hemmed edges and be installed with cleats that allow individual sections to expand and contract figure 2 34.
Install an underlayment centered in the roof valley.
15 3 11 batten installation 16 3 12 tile installation 17 3 13 flat low medium and high profile tile 19 3 14 valleys.
3 06 valley termination onto roof plane 11 3 07 flashing and counter flashings at wall abutments 11 3 08 head and apron flashing 12 3 09 standard curb mounted skylights chimneys etc.
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Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.
The tile roof institute tri concrete and clay tile installation manual for moderate climate regions allows for open flashing exposed and closed tiles meet over flashing valley installations.
For a closed valley the roofer will install the shingles onto the roof deck and extend the asphalt shingles through the area where opposing roof planes meet so that the shingles cover or close the valley area.
Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic.
Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs.
With a clean valley you can lay down some peel and stick roofing membrane.
Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps.
Installers develop a preference based on their experience with the local climate.
Closed valley details on tile roofs in this type of valley the flashing carries the runoff and the tile in the valley is only decorative.
Fold the top over the roof ridge and cut the bottom along the drip edge metal.
