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READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 7: THERMAL AND MOISTURE PROTECTION]{.underline}

SECTION 07513 ‑ BUILT‑UP BITUMINOUS ROOFING

(GRAVEL-SURFACED 1/2-INCH TO 3-INCH SLOPE/FT)

USE: Furnishing and installing a conventional built‑up roof.

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[\_\_\_\_\_\] provide for information
to be inserted, as appropriate, to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface**,
and *italics*, within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately.)

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED.** Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name of the Project (upper and lower
case)**. Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specification that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST
110, or call (303) 987-6868.

**DRAWING DATA REQUIRED:**

**REQUIRED SPEC MODIFICATIONS:**

[GENERAL NOTES]{.underline}

A. Whenever entire articles, paragraphs, or subparagraphs are not
applicable, the articles, paragraphs, or subparagraphs should be
deleted; when necessary, reletter or renumber articles, paragraphs, or
subparagraphs.

B. THIS GUIDE IS NOT INTENDED AS A SUBSTITUTE FOR READING THE ENTIRE
SECTION.

[TECHNICAL NOTES]{.underline}

A. 1.1B: Select or add applicable specification sections. Do not list
specification sections from Division 7.

B. 1.2: Select or add applicable references.

C. 1.3A: Select applicable specification section.

D. 1.3B: Insert number of copies of the manufacturer\'s descriptive
literature required. Normally 5 copies are required. Distribution after
review is normally 1 copy to the COR, 3 copies to the Contractor, and 1
copy to the project file.

E. 1.3C: Insert number of copies of the materials list required.
Normally 5 copies are required. Distribution after review is normally 1
copy to the COR, 3 copies to the Contractor, and 1 copy to the project
file.

F. 4.1 and 4.2: When a \"lump sum\" Contract is used, delete the title
PART 4: MEASUREMENT AND PAYMENT, and both articles from this
specification section. Measurement and payment will be addressed in Part
4 of Section 01010.

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 12/01

Metric:

Technical Update: 09/92

SECTION 07513

BUILT-UP BITUMINOUS ROOFING

(Gravel-Surfaced, ½-inch to 3-inch)

[PART 1: GENERAL]{.underline}

1.1 SUMMARY:

A. Section Includes: Furnishing and installing a gravel surfaced 3‑ply
fiberglass felt roofing membrane over a nailable deck with an incline of
between 1/2 and 3 inches/ft.

1.2 REFERENCES:

A. American Society for Testing and Materials:

ASTM D 41‑85 Asphalt Primer Used in Roofing, Dampproofing and
Waterproofing

ASTM D 312‑89 Asphalt Used in Roofing

ASTM D 1863‑86 Mineral Aggregate Used on Built‑Up Roofs

ASTM D 2178‑89 Asphalt Glass Felt Used in Roofing and Waterproofing

ASTM D 2626 E1-86 Asphalt‑Saturated and Coated Organic Felt Base Sheet
Used in Roofing

ASTM D 2822‑91 Asphalt Roof Cement

B. International Conference of Building Officials (ICBO):

UBC-1991 Uniform Building Code

1.3 SUBMITTALS:

A. General: Submittals shall be according to \[Section 01009 - General
Information and Requirements.\] \[and\] \[Section 01300 - Submittals.\]
\[and\] \[Section 01365 - Certificates of Conformance.\]

B. Manufacturer\'s Literature: Submit \[[ ]{.underline}\] copies of
manufacturer\'s descriptive data for the roofing installation to be used
on this project.

C. Materials List: Submit \[[ ]{.underline}\] copies of the list of
materials proposed to be used on this project.

1.4 QUALITY ASSURANCE:

A. Failure Criteria: Not limited to the following:

1\. Wrinkling or buckling of roof surface.

2\. Alligatoring or blistering of roof surface.

3\. Separation of insulation or roofing felts from adjacent materials
above or below.

4\. Fish mouths.

1.5 DELIVERY, STORAGE, AND HANDLING:

A. Storage: Provide raised platforms and securely cover with waterproof
tarpaulins to protect the materials from the weather and from
contamination. Plastic sheeting is not acceptable as a protective
covering.

1.6 PROJECT/SITE CONDITIONS:

A. Environmental Requirements: Installation of roofing during inclement
weather or when air temperature is below 45 degrees F is hazardous to
the satisfactory performance of finished roof and not allowed except as
noted below:

1\. Remove ice and snow from deck before applying roofing. Surface must
be dry.

2\. Do not overheat asphalt to offset rapid chilling. Keep roofing roll
close behind mop. Mop no further than 5 feet in front of roll, and broom
all plies immediately after embedment.

3\. After membrane is completed, apply top flood coat and surfacing
material the same day.

1.7 SEQUENCING AND SCHEDULING:

A. General: Related work of other trades shall be properly installed and
not adversely affect the installation or performance of the roofing
system.

[PART 2: PRODUCTS]{.underline}

2.1 MATERIALS:

A. Base Felt: Coated Fiberglass Base Felt, according to ASTM D 3378.

B. Finishing Felt: Number 15 asphalt‑saturated fiberglass finishing
felt, according to ASTM D 250, two layers.

C. Flashing Sheet: Asphalt‑impregnated glass fiber flashing sheet,
according to ASTM D 2178.

D. Asphalt primer: Shall be according to ASTM D 41.

E. Asphalt (between plies and flood coat): Shall be according to ASTM D
312, Type 3.

F. Roofers cement (trowel application): Shall be according to ASTM D
2822, Group 1.

G. Aluminum fibered coating.

H. Nails: Regular head roofing nails, barbed, flat head, diamond point,
one inch Number 12 ga minimum driven through flat tin disks.

I. Gravel: Shall be 1/2 to 3/4 inch, according to ASTM D 1863.

[PART 3: EXECUTION]{.underline}

3.1 PREPARATION:

A. Surface Preparation: Surfaces to receive roofing materials shall be
sound, clean, smooth, dry and free of debris, loose material, or defects
which would have an adverse effect on the roofing application or
performance. The placing of electrical or other conduits, bolt heads,
above the roof deck and below the roofing membrane will not be
permitted. Projections or openings in the deck shall have been completed
prior to the application of the roofing. Immediately before application
of roofing, thoroughly clean surface of roof deck.

B. Prior to Application of Roofing: Nail one continuous strip of coated
base sheet 10 inches wide to the wood nailer provided, allowing 1/2
width to extend past edge of roofing.

3.2 INSTALLATION:

A. Envelope Strips: Install at eaves, edges and around roof openings to
prevent drippage of asphalt.

1\. After roofing has been applied, fold the coated base sheet strip
back over the top of the roofing and cement it in place with roofers
cement.

B. Base Sheet: Using coated fiberglass base felts full width, lap each
felt 2 inches over preceding one. Nail the laps at 9-inch centers. Down
the longitudinal center of each felt, nail two rows of nails with rows
spaced approximately 11 inches apart and nails staggered on
approximately 18-inch centers. Use nails or fasteners appropriate to the
type of deck.

C. Roofing Felts: Over entire surface, starting at low point of roof,
mop a uniform coating of roofing asphalt (approximately 23 lb/100 ft²)
into which, while hot, embed two plies of asphalt‑saturated fiberglass
felt. Do not heat over 400EF.

1\. Use starting strips of felt cut 18 inches wide followed by full
width sheets. Lap each ply 19 inches over preceding ply.

2\. Mop full width of sheet with a continuous coating of roofing asphalt
(approximately 23 lb/100 ft²) so that felt does not touch felt.
Spot‑mopping, strip‑mopping and solid‑mopping with insufficient material
will not be allowed, and any evidence of these practices will constitute
cause for removal and replacement of affected work at Contractor\'s
expense. Broom each ply to assure complete embedment. Extend all plies
to top of cant and cut all plies evenly at wall line.

3\. Flood surface with asphalt (60 lb/100 ft²) and while hot embed
gravel at 400 lb/100 ft².

D. Parapet Flashing: Over the roofing from a point 3 inches out from the
base of the cant, on the cant and over the wall surfaces to immediately
below the point where the metal cap flashing occurs, apply a uniform
trowel coating of 35 lb/100 ft² of roofers cement. Into this, embed
one‑ply of No. 15 fiberglass felt. Lap ends 3 inches and cement. Over
this entire surface apply a second uniform trowel coating of roofers
cement at 35 lb/100 ft². into which embed one‑ply of flashing sheet. Lap
ends 3 inches and cement.

E. Base Flashing: Nail base flashing to the wall one inch below the top
edge. Use nails specified 12 inches oc driven through flat tin disks.
Over the entire surface of the base flashing, apply a brush coat of
aluminum fibered coating at the rate of one gal/100 ft².

F. Fascia/Gravel Stops: Prime flanges with asphalt primer. Set flanges
in a trowel coating of roofers cement on top of completed roof membrane.
Nail flanges 3 inches oc in a line 3/4 inch from flange edge and strip
with one-ply of flashing strip 9 inches wide mopped solidly in asphalt.

3.3 PROTECTION:

A. General: Protection for the roofing system, during and after
installation shall be provided to guard against possible damage from
other trades working in the roof area.

[PART 4: MEASUREMENT AND PAYMENT]{.underline}

4.1 METHOD OF MEASUREMENT:

A. ab Units: The work described in this section will not be measured for
payment.

4.2 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section
will be made. The Contractor shall include consideration for this item
in the bid price for other items of the Contract.

END OF SECTION