USACE / NAVFAC / AFCESA / NASA UFGS-07 32 13 (April 2006 )
------------------------------
Preparing Activity: NAVFAC Replacing without change
UFGS-07320 (June 2005 )
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 07 32 13
ROOF TILES
04/06
NOTE: This guide specification covers the requirements for clay and concrete
roofing tiles and underlayments.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
NOTE: "The NRCA Steep Roofing Manual," National Roofing Contractors Association,
6250 River Road, Rosemont, IL 60018, may be consulted by the designer for a
more detailed description of the tile roofing installation.
NOTE: On the drawings, show:
1. Pitch of substrate/tile roofing.
2. Roof edge, rake, ridge, valley, and intersections with vertical surfaces.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[AMERICAN WOOD PROTECTION ASSOCIATION (AWPA)AWPA C1(2003) All Timber Products - Preservative Treatment by Pressure Processes][ASTM INTERNATIONAL (ASTM)ASTM C 1167(2003) Standard Specification for Clay Roof TilesASTM C 1177/C 1177M(2008) Standard Specification for Glass Mat Gypsum Substrate for Use as SheathingASTM C 270(2008a) Standard Specification for Mortar for Unit MasonryASTM C 67(2008) Standard Test Methods for Sampling and Testing Brick and Structural Clay TileASTM D 2178(2004) Asphalt Glass Felt Used in Roofing and WaterproofingASTM D 226(2006) Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and WaterproofingASTM D 412(2006ae1e2) Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - TensionASTM D 4586(2007) Asphalt Roof Cement, Asbestos-FreeASTM E 108(2007a) Fire Tests of Roof CoveringsASTM E 84(2008a) Standard Test Method for Surface Burning Characteristics of Building Materials][NATIONAL ROOFING CONTRACTORS ASSOCIATION (NRCA)NRCA 0408(Fifth Edition) Steep-slope Roofing Manual]1.2 SUBMITTALS
NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
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
1.3 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.
1.4 WARRANTIES
1.4.1 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.
1.5 COORDINATION
Coordinate with the installation of flashing and gutters provided under Section 07 57 13 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.
1.6 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.
1.7 QUALITY ASSURANCE
1.7.1 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.
1.7.2 Clay Tile Roofing System Drawings
Submit drawings showing clay tile roofing installation and details for appearance, flashing and fastening of
tiles.
PART 2 PRODUCTS
2.1 MATERIALS
NOTE: Roofing systems specified in this section have a life expectancy in excess
of 50 years. Flashing materials should be selected with similar life expectancy.
[2.1.1 Clay Tile
ASTM C 1167, 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.
][2.1.2 Concrete Tile
NOTE: Use only concrete roof tiles with integral color in areas where freeze/thaw
cycles exceed 30 per year.
ASTM C 67, ASTM E 108, 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.
]2.2 UNDERLAYMENT MEMBRANE
NOTE: If a felt membrane is desired solely or in combination with the elastomeric
self-adhering membrane, please select either the asphalt glass felt or asphalt-saturated
felt component.
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].
[2.2.1 Asphalt Glass Felt
ASTM D 2178, Type VI.
][2.2.2 Asphalt-Saturated Felt
Provide Type II, No. 30 asphalt felt in accordance with ASTM D 226.
]2.2.3 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.
2.2.4 Self-Adhering Membrane Underlayment
ASTM D 412, high strength polyethylene-sheet-backed, rubberized asphalt membrane, 1.02 mm 40 mil thickness.
2.2.5 Primer for Self-Adhering Membrane Underlayment
VOC compliant primer as recommended by membrane manufacturer for application on concrete substrates.
2.3 SUBSTRATE PANELS (FOR APPLICATION OVER STRUCTURAL METAL DECK)
NOTE: Choose one of the following substrate panels.
2.3.1 Glass Mesh Mortar Units
ASTM E 84, 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.
2.3.2 Fiberglass-Faced Gypsum Roof Board
ASTM C 1177/C 1177M, non-structural, fiberglass faced, silicone treated core gypsum panels, 1200 by 2400 by 13
mm 48 by 96 by 1/2 inchthickness.
2.4 FASTENERS
2.4.1 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 mm3/4 inch into nailable concrete
deck] [through plywood sheathing] [through substrate panels]. Verify that nails are compatible with flashing
materials to prevent galvanic action.
2.4.2 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.
2.4.3 Twisted-Wire Tie System
NOTE: This paragraph is applicable for the installation of clay tile on roofs
with slopes in excess of 12:12.
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 mm16 gage galvanized steel]
[9.4 mm dia.0.037 inch dia. stainless steel] wire. Provide clips for anchorage of twisted-wire tie system to
substrate as recommended by manufacturer.
2.4.4 Single-Line Wire Tie System
NOTE: This paragraph is applicable for the installation of clay tile on roofs
with slopes from 2:12 to 12:12.
[3.3 mm10 gage copper] [3.3 mm10 gage brass] [2.5 mm 12 gage galvanized steel] [2.13 mm0.084 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.
2.4.5 Wind Locks
NOTE: This paragraph is applicable for the installation of clay tiles for all
slopes in high wind areas as designated by local codes.
[3.3 mm10 gage copper] [3.3 mm10 gage brass] [2.5 mm 12 gage galvanized steel] [2.13 mm dia.0.084 inch dia.stainless
steel] formed wire clips. Select material type as recommended by manufacturer for specific locations.
2.4.6 Hurricane Clips
NOTE: The following paragraph is applicable for the installation of clay or
concrete tiles for all slopes in high wind areas as designated by local codes.
Tile edge clips fabricated from [1.2 mm18 gage brass] [1.05 mm19 gage galvanized steel] [1.07 mm0.042 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.
2.5 PRESERVATIVE-TREATED LUMBER
AWPA C1, provide treated ridge and hip boards, [eave starter strips and battens].
[2.6 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.
]2.7 MORTAR
ASTM C 270, Proportion specification for Type M mortar mix.
2.8 ASPHALT PLASTIC CEMENT
ASTM D 4586, Type I.
PART 3 EXECUTION
3.1 EXAMINATION
Examine structural roof deck for compliance with requirements of selected system. Verify that roof penetrations
and openings are installed in their proper location.
3.2 PREPARATION
3.2.1 Cleaning
Clean structural deck surfaces to receive substrate panels or underlayment.
3.3 INSTALLATION
Comply with manufacturer's installation instructions and recommendations, but not less than recommended by NRCA 0408
. Comply with local building code requirements for special fastening requirements such as wind locks and hurricane
clips in high wind areas.
3.3.1 Substrate Panels
Install [glass mesh mortar units] [fiberglass-faced gypsum roof boards] 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 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.
3.3.7 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.
3.4 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:
Products English Units Metric Units
Nails - diameter 11 gage 2.9 mm
head diameter 3/8 inch 9.5 mm
Nails - diameter 10 gage 3.3 mm
head diameter 7/16 inch 11 mm
Wire 10 gage 3.3 mm
12 gage 2.5 mm
14 gage 1.8 mm
0.037 inch 9.4 mm
0.084 inch 2.13 mm
Edge Clips 18 gage 1.2 mm
19 gage 1.05 mm
0.042 inch 1.07 mm
1/2 inch 13 mm
Birdstop 26 gage 0.5 mm