Specification:Roof tiles

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=GENERAL=

SUBMITTALS
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are [for Contractor Quality Control approval.][for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:


 * SD-02 Shop Drawings
 * Clay tile roofing system
 * SD-03 Product Data
 * [Clay tile] [Concrete tile]
 * Underlayment membrane
 * Flexible hip and ridge flashing
 * Glass mesh mortar units
 * Fiberglass-faced gypsum roof board
 * Submit data including tile properties, styles, and configurations.
 * SD-04 Samples
 * Manufacturer's color charts for [Clay tile] [Concrete tile][; G][; G, [_____]]
 * [Clay tile] [Concrete tile][; G][; G, [_____]]
 * Submit an appropriate number of tiles for each type to illustrate the full range of colors and surface finish.
 * SD-06 Test Reports
 * Self-adhering membrane underlayment
 * Glass mesh mortar units
 * Fiberglass-faced gypsum roof board
 * Preservative-Treated lumber
 * SD-07 Certificates
 * Qualifications of roofing personnel
 * SD-08 Manufacturer's Instructions
 * Installation

DELIVERY AND STORAGE
Deliver materials in the manufacturer's unopened bundles and containers bearing the manufacturer's brand name. Keep materials dry, completely covered, and protected from the weather. Store according to manufacturer's written instructions.

Contractor's Warranty
The Contractor shall warrant for 5 years that the tile roofing system, as installed, is free from defects in workmanship. When repairs due to defective workmanship are required during the Contractor's warranty period, the Contractor shall make such repairs within 72 hours of notification. When repairs are not performed within the specified time, emergency repairs performed by others will not void the warranty.

COORDINATION
Coordinate with the installation of flashing and gutters provided under Section 07 60 00 FLASHING AND SHEET METAL to ensure proper sequencing. Do not install roofing materials until vent stacks and other penetrations through roof deck have been installed.

EXTRA STOCK
Provide an extra two percent of each type and color of tile used in clean marked containers. In the extra stock provided, include hip, ridge, and other special shapes in the same proportion as used on the project.

Qualifications of Roofing Personnel
Submit documentation showing qualifications of personnel proposed to perform the roofing work and a listing identifying prior installations completed by the Contractor.

Clay Tile Roofing System Drawings
Submit drawings showing clay tile roofing installation and details for appearance, flashing and fastening of tiles.

=PRODUCTS=

Clay Tile
ASTM C1167, Grade 1, Machine formed natural clay tiles, [One Piece "S" Mission] [Two Piece Spanish Mission consisting of a cover and pan tile] [Flat Bar Tile with interlocking edges], kiln-fired to vitrification and free from surface imperfections. Provide specially shaped, color-matched units [as indicated][in accordance with Section 09 06 90, COLOR SCHEDULE] or required, including hip and ridge covers, rake covers and [birdstops]. Provide with fastening holes preformed at factory prior to firing.

Concrete Tile
ASTM C67, ASTM E108, Extruded, interlocking concrete roofing tile units, shapes as indicated, with [integral color] [color slurry coat on exposed surfaces]. Include specially shaped, color-matched units as indicated or required for ridges, rakes and hips. Provide with cast-in anchor lugs, transverse weather checks and fastening holes.

UNDERLAYMENT MEMBRANE
Provide underlayment membrane on surfaces that will be covered with tile. Membrane shall consist of [asphalt glass felt][asphalt-saturated felt] [and] [high strength composite self-adhering membrane].

Asphalt Glass Felt
ASTM D2178, Type VI.

Asphalt-Saturated Felt
Provide Type II, No. 30 asphalt felt in accordance with ASTM D226/D226M.

Flexible Hip and Ridge Flashing
SBS modified rubberized asphalt adhesive on a lineal, low density polyethylene membrane with a 1.52 mm 60 mil total thickness.

Self-Adhering Membrane Underlayment
ASTM D412, high strength polyethylene-sheet-backed, rubberized asphalt membrane, 1.02 mm 40 mil thickness.

Primer for Self-Adhering Membrane Underlayment
VOC compliant primer as recommended by membrane manufacturer for application on concrete substrates.

Glass Mesh Mortar Units
ASTM E84, exterior type panels consisting of portland cement, light weight aggregate, with vinyl-coated woven glass fiber mesh imbedded in both surfaces, 11 mm 7/16 inch thickness by 900 mm 36 inch width by 1200, 1500, 1800, or 2400 mm 48, 60, 72 or 96 inch lengths.

Fiberglass-Faced Gypsum Roof Board
ASTM C1177/C1177M, non-structural, fiberglass faced, silicone treated core gypsum panels, 1200 by 2400 by 13 mm 48 by 96 by 1/2 inchthickness.

Nails For Applying Felt Underlayment
Hot dip galvanized steel, 2.9 mm thick 11 gage, sharp pointed, conventional roofing nails with barbed shanks, minimum 9.5 mm 3/8 inch diameter head, and of sufficient length to penetrate [ 19 mm 3/4 inch into nailable concrete deck] [through plywood sheathing] [through substrate panels]. Verify that nails are compatible with flashing materials to prevent galvanic action.

Nails for Installation of Tile
Copper ring shank nails, 3.3 mm 10 gage, with minimum 11 mm 7/16 inch diameter head or 3.3 mm 10 gage stainless steel ring shank nails with minimum 9.5 mm 3/8 inch head and of sufficient length to penetrate 19 mm 3/4 inch into [wood ridge and hip boards] [battens]. Verify that chemicals used in pressure treatment of ridge and hip boards are compatible with copper nails.

Twisted-Wire Tie System
Continuously twisted 3.3 mm 10 gage [copper][brass] [ 2.5 mm (12 gage) galvanized steel] wire with loops formed at 150 mm 6 inches on center and with tie wires of 1.8 mm 14 gage [copper] [brass] [ 1.5 mm 16 gage galvanized steel] [ 9.4 mm 0.037 inch diameter stainless steel] wire. Provide clips for anchorage of twisted-wire tie system to substrate as recommended by manufacturer.

Single-Line Wire Tie System
[ 3.3 mm 10 gage copper] [ 3.3 mm 10 gage brass] [ 2.5 mm 12 gage galvanized steel] [ 2.13 mm 0.084 inch stainless steel] pre-formed wire ties with a hook on one end and a loop on the other end. Lengths as required for manufacturer's recommended exposure.

Wind Locks
[ 3.3 mm 10 gage copper] [ 3.3 mm 10 gage brass] [ 2.5 mm 12 gage galvanized steel] [ 2.13 mm 0.084 inch diameter stainless steel] Mformed wire clips. Select material type as recommended by manufacturer for specific locations.

Hurricane Clips
Tile edge clips fabricated from [ 1.2 mm 18 gage brass] [ 1.05 mm 19 gage galvanized steel] [ 1.07 mm 0.042 inch, type 302 stainless steel] strips, 13 mm 1/2 inch wide. Provide with two nail holes in horizontal leg for anchorage to deck [substrate]. Select material type as recommended by manufacturer for specific locations.

PRESERVATIVE-TREATED LUMBER
AWPA C1, provide treated ridge and hip boards, [eave starter strips and battens].

SHEET METAL BIRDSTOP FOR CONCRETE TILE
Formed 0.5 mm 26 gage galvanized steel "L" section with 75 mm 3 inch wide horizontal leg and vertical leg cut to conform with bottom profile of tile. Provide pre-finished to match tile color with drain holes punched in vertical leg prior to application of finish.

MORTAR
ASTM C270, Proportion specification for Type M mortar mix.

ASPHALT PLASTIC CEMENT
ASTM D4586/D4586M, Type I.

=EXECUTION=

EXAMINATION
Examine structural roof deck for compliance with requirements of selected system. Verify that roof penetrations and openings are installed in their proper location.

Cleaning
Clean structural deck surfaces to receive substrate panels or underlayment.

INSTALLATION
Comply with manufacturer's installation instructions and recommendations, but not less than recommended by NRCA 0418. Comply with local building code requirements for special fastening requirements such as wind locks and hurricane clips in high wind areas.

Substrate Panels
Install [glass mesh mortar units] [fiberglass-faced gypsum roof boards] over corrugated metal structural deck as recommended by panel manufacturer.

Felt Underlayment
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].

Self-Adhering Membrane Underlayment
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.

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.

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.

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 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 tile.] [Apply flexible hip and ridge flashing over ridge and hip boards and top edge of tile. Apply asphalt plastic cement between tiles at hip and ridge.] Nail hip and ridge tiles to hip and ridge boards.

CLEANING
Remove mortar and asphalt plastic cement spatter from exposed surfaces of tiles. Upon completion of work, remove excess materials and all refuse generated by the work of this section.

SCHEDULE
Some metric measurements in this section are based on mathematical conversion of English unit measurement, and not on metric measurement commonly agreed to by the manufacturers or other parties. The English and metric units for the measurements shown are as follows: