SECTION 07105

BITUMINOUS MEMBRANE WATERPROOFING

PART 1 GENERAL

SECTION INCLUDES

[Hot applied asphalt] [Cold applied asphalt] [Hot applied coal tar] bitumen waterproofing [, with fabric reinforcement].

Cant strips.

[Protective cover.]

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [______-____________]: Placement of [flashing devices] [special coated metal] [________] for counter flashing Work of this section.

RELATED SECTIONS

Section 02223 - Backfilling.

Section [______-____________]: Concrete foundation surfaces.

Section [______-____________]: [Parged] masonry foundation surfaces.

Section [______-____________]: Preservative treated wood foundation surfaces.

Section 07160 - Bituminous Dampproofing.

Section [______-____________]: [________] type waterproofing.

Section 07212 - Board Insulation: Perimeter [and horizontal] insulation [protective cover].

Section [______-____________]: [Metal] [Membrane] counter flashings.

Section 15430 - Plumbing Specialties: Drain flashing flanges.

REFERENCES

ASTM D41 - Asphalt Primer Used in Roofing, Dampproofing and Waterproofing.

ASTM D449 - Asphalt Used in Dampproofing and Waterproofing.

ASTM D450 - Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing.

ASTM D491 - Asphalt Mastic Used in Waterproofing.

ASTM D43 - Creosote Primer Used in Roofing, Dampproofing, and Waterproofing.

ASTM D173 - Bitumen-Saturated Cotton Fabrics Used in Roofing and Waterproofing.

ASTM D226 - Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing.

ASTM D227 - Cold-Tar-Saturated Organic Felt Used in Roofing and Waterproofing.

ASTM D1327 - Bitumen-Saturated Woven Burlap Fabrics Used in Roofing and Waterproofing.

ASTM D1668 - Glass Fabrics (Woven and Treated) for Roofing and Waterproofing.

ASTM D2178 - Asphalt Glass Felt Used in for Roofing and Waterproofing.

ASTM D2626 - Asphalt-Saturated and Coated Organic Felt Base Sheet Used in Roofing.

ASTM D2822 - Asphalt Roof Cement.

ASTM D4022 - Coal Tar Roof Cement.

NRCA (National Roofing Contractors Association) -Waterproofing Manual.

SYSTEM DESCRIPTION

Waterproofing System: Capable of resisting water head of [____] feet ([____] mm) and preventing moisture migration to interior.

****** [OR] ******

Waterproofing System: [____] applications of bitumen with [____] plies of integral fabric reinforcement to prevent moisture migration to interior.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate [metal] [membrane] [flexible] flashings, [control] [and] [expansion] joints, sealing at [openings] [projections] [reglets] [and] waterproofing of [holes] [slots] [sleeves] [and] [________].

Product Data: Provide properties of primer, bitumen, mastics, and characteristics of reinforcement fabric.

Manufacturer's Installation Instructions: Indicate special procedures and perimeter conditions requiring special attention.

Manufacturer's Certificate: Certify that [Products] [________] meet or exceed [specified requirements] [________].

QUALITY ASSURANCE

Perform Work in accordance with NRCA Waterproofing Manual.

[Test material samples in accordance with ANSI/ASTM [D449] [D450].]

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Applicator: Company specializing in performing the work of this section [with minimum [__________] years [documented] experience.] [approved by manufacturer.]

MOCKUP

Provide mockup of waterproofing system under provisions of Section [01400.] [________.]

Mockup: [100] [____] sq ft ([10] [____] sq m) of [horizontal] [and] [vertical] waterproofed panel; to represent finished work including internal and external corners, sealing, [base flashings,] [control] [and] [expansion] joints, [protective cover].

Mockup may [not] remain as part of the Work.

ENVIRONMENTAL REQUIREMENTS

Maintain ambient temperatures above [40] [____] degrees F ([5] [____] degrees C) for [24] [____] hours before and during application until membrane has cured.

WARRANTY

Provide [five] [____] year warranty under provisions of Section [01700.] [________.]

Warranty: Include coverage for waterproofing failing to resist penetration of water, except where such failures are the result of structural failures of building. Hairline cracking of concrete due to temperature change of shrinkage is not considered a structural failure.

****** [OR] ******

Warranty: Include coverage for waterproofing failing to resist penetration of water.

[For warranty repair work, be responsible for removing and replacing materials concealing waterproofing.]

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

HOT ASPHALTIC MATERIALS

Asphalt: ASTM D449, Type [I.] [____.]

Asphalt Primer: ASTM D41, compatible with substrate.

Asphaltic Sealing Mastic: [ASTM D491.] [ASTM D2822 Type [I] [II].]

Cotton Fabric: ASTM D173, woven, 10 oz/sq yd (340 g/sq m) average net mass of asphalt saturated fabric.

****** [OR] ******

Glass Fiber Fabric: ASTM D1668, Type [I] [III], woven, asphalt treated.

****** [OR] ******

Glass Mat:	ASTM D2178 Type [III] [IV], asphalt saturated.

****** [OR] ******

Jute Fabric:	ASTM D1327, woven, 9.8 oz/sq yd (330 g/sq m) average net mass of asphalt saturated fabric.

****** [OR] ******

Felt: ASTM D226 Type [I, No. 15] [II, No. 30] [III, No. 20]; asphalt saturated felt.

****** [OR] ******

Coated Base Sheet: ASTM D2626, 37 lb/100 sq ft (1 806 g/sq m) net mass of asphalt saturated sheet.

****** [OR] ******

COAL TAR MATERIALS

Coal Tar: ASTM D450, Type [II.] [____.]

Coal Tar Primer: ASTM D43, creosote type.

Coal Tar Sealing Mastic:	ASTM D4022, bitumen filled with mineral dust and mineral fibers, to mastic consistency.

Cotton Fabric: ASTM D173, woven, 10 oz/sq yd (340 g/sq m) average net mass of coal tar saturated fabric.

****** [OR] ******

Glass Fiber Fabric: ASTM D1668 Type II, woven, coal tar saturated.

****** [OR] ******

Glass Mat: Coal tar saturated, [________] manufactured by [____________].

****** [OR] ******

Jute Fabric:	ASTM D1327, woven, 9.8 oz/sq yd (330 g/sq m) average net mass of coal tar saturated fabric.

****** [OR] ******

Felts: ASTM D227, 13 lb/100 sq ft (635 g/sq m) average net mass of coal tar saturated fabric.

****** [OR] ******

COLD ASPHALTIC MATERIALS

Asphalt Emulsion: ASTM D1187.

****** [OR] ******

Asphalt Mastic: ASTM D491.

Asphalt Primer: ASTM D41, compatible with substrate.

Glass Fiber Fabric: ASTM D1668, Type I, woven, asphalt treated.

Asphalt Cement: ASTM D2822 Type I.

ACCESSORIES

Protection Board: Rigid insulation specified in Section [07212.] [________.]

****** [OR] ******

Protection Board: [1/8] [1/4] [1/2] [____] inch ([3] [6] [13] [____] mm) thick [biodegradable hardboard] [polystyrene foam sheet] [asphalt wood fiberboard] [bitumen impregnated glass fiberboard] [________]; [________] manufactured by [____________].

Cant Strips:	[Premolded composition material] [Bitumen impregnated fiberboard] [________]; [________] manufactured by [____________].

Flexible Flashings: [____] inch ([____] mm) thick, [butyl] [EDPM [________]; [________] manufactured by [____________].

PART 3 EXECUTION

EXAMINATION

Verify substrate surfaces are durable; free of matter detrimental to adhesion or application of waterproofing system.

Verify items which penetrate surfaces to receive waterproofing are securely installed.

PREPARATION

Protect adjacent surfaces not designated to receive waterproofing.

Clean and prepare surfaces to receive waterproofing in accordance with manufacturer's instructions.

Do not apply waterproofing to surfaces unacceptable to [manufacturer] [or] [applicator].

Apply mastic to seal penetrations, small cracks, or minor honeycomb in substrate.

APPLICATION

Conform to NRCA - Waterproofing Manual drawing details as noted:

[________] - [____________________________].

Prime surfaces in accordance with manufacturer's instructions.

****** [OR] ******

Prime surfaces in accordance with NRCA - Waterproofing Manual.

****** [OR] ******

Prime surfaces at a rate of [____] gal/100 sq ft ([____]

L/sq m). Permit primer to dry.

[Install cant strips at internal corners.]

Apply [hot] [cold] moppings of bitumen [and embed [felt] [fabric] reinforcement] [in accordance with manufacturer's instructions.] [in accordance with NRCA - Waterproofing Manual.] [at a rate of [____] gal/100 sq ft ([____] L/sq m).]

Apply bitumen at a temperature limited by equiviscous temperature (EVT) plus or minus 25 degrees F (14 degrees C); finish blowing temperature not to be exceeded for four hours.

Roll or press sheet firmly into bitumen eliminating wrinkles, air pockets, or disruptions of continuity. Lap edges and ends [____] inches ([____] mm). [Weather lap sheet materials.] [Secure sheets at [____] intervals in accordance with [________].]

Apply [two] [____] extra [felt] [fabric] plies at corners, intersections, angles, and over [________] joints.

Apply [two] [____] extra [felt] [fabric] plies diagonal to internal corner interruptions to membrane.

Extend membrane over cants and up intersecting surfaces at membrane perimeter, [____] inches ([____] mm) for first ply and [____] inches ([____] mm) at subsequent plies laid in shingle fashion.

Extend membrane [and flexible flashing] into drain clamp flange, apply liberal coating of mastic to assure clamp ring seal. Coordinate with drain installation, Section [15430] [________].

Terminate top edge of membrane [and flexible flashing] under counter flashings, seal with mastic. Coordinate with [metal] [____] flashing installation.

[Continue reinforced membrane over [control] [and] [expansion] joints in accordance with reinforcement manufacturer's instructions.]

Apply top coat at a rate of [____] [gal] [lb] 100/sq ft ([____] L/sq m). [Apply coating to fully conceal reinforcement.]

Seal protrusions through membrane with [multiple plies of reinforcement and] flood coating, mastic [and flexible flashings]. Seal watertight.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [________.]

On completion of horizontal membrane installation, dam installation area in preparation for flood testing.

Flood to minimum depth of [1] [____] inch ([25] [____] mm) with clean water. After 48 hours, inspect for leaks.

If leaking is found, remove water, repair leaking areas with new waterproofing materials as directed by Architect/Engineer; repeat flood test. Repair damage to building.

When area is proven watertight, drain water and remove dam.

PROTECTION OF FINISHED WORK

Protect finished Work under provisions of Section [01500.] [________.]

Do not permit traffic over unprotected or uncovered membrane.

Protect membrane from damage by adhering protection board [, applied with mastic] over membrane surface. Scribe and cut boards around projections and interruptions.

SCHEDULE

WATERPROOFING SCHEDULE

Foundation Wall:	Two plies of asphalt waterproofing with cotton fabric reinforcement.

Foundation Wall at Entry Area: Two plies of asphalt waterproofing, un-reinforced.

Subgrade Tunnel:	Three plies of asphalt waterproofing with glass fiber fabric reinforcement, on walls and roof.

END OF SECTION