PART I - GENERAL

1.01 GENERAL

A. SCOPE:

To install a Tough Stuff coating system to waterproof and restore existing transite roofing to watertight and maintainable conditions. Panels containing asbestos are encapsulated to prevent friable materials from washing or dusting off.

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 the Coatings International Roofing Systems' 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 the 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- nstallation 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 startup and periodically during the progress 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 in writing by Coatings International Roofing Systems. 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 II-EXECUTION

2.01 CAUTIONS

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 Material Safety 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. FASTENERS:

Examine existing system for loose fasteners and gapped seams. Pay particular attention to the horizontal seams. These seams have to be tight before detailing. Replace stripped fasteners with an oversized version of the same fastener, i.e. aluminum, galvanized, or stainless must remain as designed by the manufacturer.

2.04 PRIMING

MEMBRANE	PRIMER	COVERAGE
RUST	PR3400	.33 gal./sq.
ASPHALT	AC5600	.5 gal./sq.
TRANSITE	PR3500	.5 gal./sq.
COATINGS	PR3600	.2 gal./sq.

2.05 DETAILING JOINTS

Transite roof configurations will dictate the type of seam detail required for complete waterproofing. Certain roof matrix conditions will not require that all seams are detailed. Consult Coatings International Roofing Systems for detail variances.

A. VERTICAL SEAMS:

Vertical joints will be finished in a fashion relative to the existing condition.

1. Vertical Seam System A: Hand or pump applied mastic.
   
   1. Brush or pump mastic into joints.
2. Vertical Seam System B: Reinforced with polyester.
   
   1. Apply UR1700 or AC5000 on joint at 1.5 gallons/square.
   2. Set 4” polyester in wet material. Apply additional material at 1.5 gallons/square and fully saturate the polyester.
   3. If standing alone, apply an additional layer of material at 1.5 gallons/square.

B. FASTENERS:

Fasteners are detailed as required to make the system watertight.

1. Dab each fastener with UR1700 mastic.

C. HORIZONTAL LAP JOINTS:

1. Apply base coat of UR1700 urethane at a rate of 1.5 gallons/square directly on the seam to be detailed.
2. Integrate desired width of polyester liner into wet base coat and brush into place with no wrinkles. Apply a top coat of UR1700 at a rate of 1.5 gallons/square over liner.
3. Allow to skin and apply a brush coat of light mastic over the joint to feather the edges.
   
   

2.06 CURB SADDLES

Machine curbs with standing water behind can be filled using UR2550 urethane filled with D210 ceramic additive. Additive is 50/50 by volume with equal displacement (50% filling adds 50% volume).

1. Pour material in depression until level with roofing ribs.
2. Allow to set and reinforce transition at edges with UR1700 and polyester liner.
   
   

2.07 APPLICATION OF FINISH COAT(S)

Spray or brush finish coats in multiple passes to achieve required mils.

2.08 INSTALLATION OF WALKWAYS

Apply additional layer(s) of the finish at 1.5-2.0 gallons/square with optional aggregate. Aggregate can be added to the mixture or broadcast into the wet material.

2.09 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

2.10 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 III - SCHEDULES

3.01 TRANSITE PANELS - MATERIALS, APPLICATION & WARRANTY