POLYURETHANE FOAM ROOFING MASTER GUIDE SPECIFICATIONS

Revised April 2000

PART I - GENERAL

1.01 GENERAL
1.02 SUBMITTALS
1.03 QUALITY ASSURANCE
1.04 CODE REQUIREMENTS
1.05 DELIVERY AND STORAGE
1.06 SITE CONDITIONS
1.07 WARRANTY

PART 2 - EXECUTION

2.01 CAUTIONS
2.02 MIXING
2.03 SUBSTRATE PREPARATION
2.04 PRIMING EXISTING CONDITIONS
2.05 APPLICATION OF FINISH COATS
2.06 INSTALLATION OF WALKWAYS
2.07 CLEAN UP
2.08 INTERCOAT WINDOW

PART 3 - SCHEDULES

3.01 MATERIALS/WARRANTY/APPLICATIONS CHART

RELATED DOCUMENTS

PART I - GENERAL

1.01 GENERAL

A. SCOPE:

To install a Tough Stuff coating system to waterproof and restore existing polyurethane foam membranes to watertight and maintainable conditions.

B. RELATED WORK:

The work includes but is not necessarily limited to the following:

1. Cleaning and preparation of substrate
   
2. Application of primers
   
3. Detailing of flashings and penetrations
   
4. Application of base coat, mid coat and finish coat on roof surface
   
   

1.02 SUBMITTALS

A. PRODUCT DATA:

Submit schedules, charts, literature, material safety data sheets, and illustrations to indicate the performance, fabrication procedures, product variations and accessories.

B. SAMPLES:

Submit sample of cured membrane materials including reinforcing where appropriate.

C. QUALITY CONTROL:

Provide test results from the manufacturer indicating compliance with the specified criteria.

D. MAINTENANCE INSTRUCTIONS:

Provide preprinted maintenance instructions for the roof coating system.

E. WARRANTIES:

Provide a sample of Tough Stuff warranty and the applicator's warranty.

1.03 QUALITY ASSURANCE

A. QUALIFICATIONS:

Provide factory-trained and authorized installers with a minimum of three years experience in installing work similar to the specified work. Submit written evidence of authorization from the manufacturer that contractor is an approved Tough Stuff applicator.

B. RESPONSIBILITY FOR PERFORMANCE:

If the requirements of the construction documents negate or restrict the specified performance, or if a conflict or ambiguity exists in the construction documents, the contractor must request a clarification of any discrepancies before proceeding with the work.

C. PRE-INSTALLATION CONFERENCE:

Before starting the work specified herein, a pre-installation conference shall be held to discuss all aspects of the project. The following parties shall be in attendance:

1. Applicator's field representative or roofing foreman
2. Manufacturer's technical representative and affected adjacent trades
3. Owner's representative
4. Architect

D. MANUFACTURER'S TECHNICAL ASSISTANCE:

Provide a representative to attend the pre-installation conference, and review existing conditions and application procedures at project start-up and periodically during the progression of the project.

1.04 CODE REQUIREMENTS

A. CODE:

All work including disposal of materials shall be in compliance with applicable local building codes.

1.05 DELIVERY AND STORAGE

A. DELIVERY:

Deliver clearly labeled, undamaged materials in the manufacturer's unopened containers.

B. TIMING AND COORDINATION:

Deliver materials to allow for minimum storage time at the project site. Coordinate delivery with the scheduled time of installation.

C. STORAGE:

Store materials in a clean dry location, protected from weather and abuse.

1.06 SITE CONDITIONS

A. EXAMINATION OF EXISTING CONDITIONS:

Contractor shall examine existing conditions affecting this work and shall report all unsatisfactory conditions to the proper authority and will not proceed until these conditions have been corrected. Commencing work implies acceptance of existing conditions as satisfactory to the outcome of this work.

1.07 WARRANTY

All products used in the coating assembly must be furnished, specified, or approved of in writing by Coatings International, Inc. Products not supplied by Coatings International will not be covered by Coatings International Roofing Systems' warranty.

A. TERM:

The manufacturer shall warrant the specified work from the date of completion for the length of the specified warranty against becoming unserviceable from either nonconforming materials or workmanship.

B. LIMITATION:

1. Coverage is limited to the cost of the new system application.
   
2. Warranty does not cover applications over wet roofing.
   
   
   

PART 2-EXECUTION

2.01 CAUTIONS

A. SAFETY:

Urethane coatings typically contain organic solvents and as such can be toxic and flammable. Work only in fully ventilated areas. Do not smoke when using these products or use near sparks, heat, or any open flames. Read and follow the Tough Stuff Mate Data Sheets (MSDS). All waste materials including empty pails must be removed from the site by the applicator and taken to a landfill authorized to receive such materials.

2.02 MIXING

Urethanes and primers will require proper mixing before application as follows:

PRODUCT	MIX TIME
AC5600, PR3200, PR3300, PR3600	None
UR2550, UR2650, UR2750	Four minutes (two part)
PR3500	One minute (two part - five minute digest after mixing)
PR3400, PR3450, AC5000, AC5900, UR1600, UR1700, UR1800	One minute

2.03 SUBSTRATE PREPARATION

A. CLEANING:

Remove dirt and foreign material detrimental to adhesion or application of roofing. Use CL404 cleaner diluted 20:1 with water. On heavy dirt or grease, apply full strength. Broom scrub the soap solution on the membrane to loosen oxidation and dirt and rinse with a minimum 2500 psi water blaster. If there are algae growing on the surface, the cleaning must include bleach in the washing of the substrate.

B. WET ROOFING:

Wet or deteriorated areas of the polyurethane foam shall be cut out and replaced with new foam or squared off and filled in with urethane board stock.

C. BARE FOAM:

Prime yellow foam with 2 coats PR3500 epoxy at 1.0 gallons/square/coat

D. HOLES AND CRACKS:

Holes and cracks in foam can also be filled with UR1700 mastic for urethane or SL6000 mastic when using silicone.

2.04 PRIMING EXISTING COATINGS

A. RATE:

Follow the guideline for appropriate primers:

SURFACE	PRIMER	COVERAGE	CONSIDERATIONS
Urethane	PR3600	.2 gallons/square
Silicone	PR3600		Use SL6000 finish only
Acrylic	None
Acrylic (With SL6000)	PR3450 AC5600	.33 gallons/square .5 gallons/square

The primers shall be installed per the instructions on the Product Data Sheets and shall be allowed to dry and then coated with the base coat in the proper time period.

2.05 APPLICATION OF FINISH COAT(S)

Install the finish coat(s) perpendicular to the previous coat using airless sprayers and back rolling to ensure even application.

2.06 INSTALLATION OF WALKWAYS

Walking traffic areas can be made by applying additional finish coats and adding aggregate to the desired area. Apply 1.0 gallon/square to area and seed with #11 roofing granules while still wet. Back roll same area with an additional coat of the same material at 1.0 gallon/square after curing.

2.07 CLEANUP

MATERIAL	CLEANUP SOLVENT
AC5000, AC5600, AC5900	Water
BU8000	Mineral Spirits
PR3300, PR3400, PR3450	Xylene
PR3600	No Clean Up Required
SL6000	Xylene
UR1600, UR1800	Xylene
UR1700, UR1900	MEK/Xylene blend
UR2550, UR2650, UR2750	Xylene

2.08 INTERCOAT WINDOWS

PRODUCT	COAT WITHIN	IF NOT, APPLY
AC5000	No Window
AC5600	No Window
AC5900	No Window
BU8000	No Window
PR3200	24 hours	Recoat with PR3200
PR3300	48 hours	Recoat with PR3300
PR3400	6 hours	Recoat with PR3400
PR3450	6 hours	Recoat with PR3450
PR3500	24 hours	Recoat with PR3500
PR3600	48 hours	Recoat with PR3600
SL6000	No Window
UR1600	No Window
UR1700	7 days	Prime with PR3600
UR1800	72 hours	Prime with PR3600
UR1900	No Window
UR2550	5 days	Prime with PR3600
UR2650	48 hours	Prime with PR3600
UR2750	4 hours	Prime with PR3450

PART 3 SCHEDULES

3.01 POLYURETHANE FOAM MATERIALS/APPLICATION/WARRANTY

WARRANTY PERIOD	SYSTEM	PRIMER	BASE COAT/LINER	MID COAT	FINISH COAT
5 YEAR (Recoat Only)	PF AC5900-5				AC5000 at 1.5 gal./sq.*
5 YEAR (Recoat Only)	PF UR1700-5				UR1700 at 2.0 gal./sq.*
5 YEAR (Recoat Only)	PF SL6000-5				SL6000 at 2.0 gal./sq.*
10 YEAR (Option A / 5% Ponding)	PF AC5900-10		AC5900 at 1.5 gal./sq./coat		AC5900 at 1.5 gal./sq.
10 YEAR (Option B)	PF UR1700-10		UR1700 at 2.0 gal./sq.		UR1700 at 1.5 gal./sq.
10 YEAR (Option C)	PF ASL6000-10		SL6000 at 1.5 gal./sq.		SL6000 at 1.5 gal./sq.

Note: Renewal systems can be modified to meet conditions. Coverage rates will vary with surface texture. Minimum millage must be maintained.

* Use this as a starting guide only - surface texture dictates coverage.

FOR ADDITIONAL INFORMATION, GO TO:

• Polyurethane Foam Restoration Brochure

See also: