over corrugated metal structural deck as recommended by panel manufacturer.
3.3.2
Felt Underlayment
**************************************************************************
NOTE: This paragraph is applicable for tile roof
installations over concrete and wood roof decks with
a slope of 4:12 or greater.
**************************************************************************
Apply one layer of felt underlayment horizontally over entire surface to
receive roofing tile, lapping succeeding courses a minimum of 50 mm 2 inches,
end laps a minimum of 150 mm 6 inches, and hips and valleys a minimum of
300 mm 12 inches. Fasten felt with sufficient number of roofing nails to
hold underlayment in place until roofing tile installation. [Provide
additional layer of felt underlayment when recommended by roof tile
manufacturer].
3.3.3
Self-Adhering Membrane Underlayment
**************************************************************************
NOTE: This paragraph is applicable for tile roof
installations over all substrates with slopes up to
4:12 or for any slope where high wind or freeze/thaw
conditions exist.
**************************************************************************
Apply self-adhering membrane over [wood deck] [concrete deck] [substrate
panels] in accordance with manufacturers recommendations. Provide
manufacturer recommended primer for application on concrete surfaces.
3.3.4
Clay Roofing Tile Installation
Beginning at eaves, install roofing tiles as indicated and in accordance
with recommendations of the tile manufacturer and fastening system
manufacturer. Sawcut tiles at hips valleys and ridges. Cut tile at
valleys to form a straight border. Taper valleys from a 50 mm 2 inch
exposure on each side of valley at top and increase exposure 25 mm one inch,
each side, per 2400 mm 8 feet of valley length. [Set ridge and hip tile in
a full bed of mortar and strike mortar flush with face of cover tiles.]
[Apply flexible hip and ridge flashing over ridge and hip boards and top
edge of tile. Apply asphalt plastic cement at lap between tiles at hip and
ridge.] Nail hip and ridge tiles to hip and ridge boards.
3.3.5
Batten Installation for Concrete Roofing Tile
Install 19 by 38 mm one by 2 inches treated wood battens with 13 mm 1/2 inch
drain slots at 1200 mm 4 feet o.c. horizontally. At eave provide 38 by 38
mm 2 by 2 inches treated wood starter strip. [Provide sheet metal birdstops
at eave for "S" Type mission tile.] At metal structural decks, attach
battens with self-tapping screws through substrate panels into metal deck.
3.3.6
Concrete Roofing Tile Installation
Beginning at eaves, install roofing tiles as indicated and in accordance
with manufacturers recommendations. Hook mounting lugs over wood battens
and nail through each tile into batten. Sawcut tiles at valleys to form a
straight border. Taper valleys from a 50 mm 2 inch exposure on each side
of valley at the top and increase exposure by 25 mm one inch, each side, per
SECTION 07320N
Page 10
Previous Page
