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:
A. PRODUCT DATA:
Submit schedules, charts, literature, material safety data sheets, and illustrations to indicate the performance, fabrication procedures, product variations, and accessories.
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.
Provide a sample of the Coatings International Roofing Systems' warranty and the applicator’s warranty.
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:
All work, including disposal of materials, shall be in compliance with applicable local building codes.
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.
Store materials in a clean dry location, protected from weather and abuse.
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.
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.
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.
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.
Urethanes and primers will require proper mixing before application as follows:
|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|
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.
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.
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.
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).
Spray or brush finish coats in multiple passes to achieve required mils.
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.
|AC5000, AC5600, AC5900||Water|
|PR3300, PR3400, PR3450||Xylene|
|PR3600||No Clean Up Required|
|UR1700, UR1900||MEK/Xylene blend|
|UR2550, UR2650, UR2750||Xylene|
|PRODUCT||COAT WITHIN||IF NOT, APPLY|
|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|
|UR1700||7 days||Prime with PR3600|
|UR1800||72 hours||Prime with PR3600|
|UR2550||5 days||Prime with PR3600|
|UR2650||48 hours||Prime with PR3600|
|UR2750||4 hours||Prime with PR3450|
|SYSTEM||PRIMER||BASE COAT/LINER||MID COAT||FINISH COAT|
|5 YEAR (Seams Only)||TP UR1700-5 or TP AC5000-5||PR3500 at .5 gal./sq.||Detail all seams, details, and flashings with joint options|
|10 YEAR (Option A)||WMR UR1700-10||PR3500 at .5 gal./sq.||1 coat UR1700 at 1.5 gal./sq.||UR1700 at 1.5 gal./sq.|
|10 YEAR (Option B)||WMR AC5900-10||PR3500 at .5 gal./sq.||1 coat UR1700 at 1.5 gal./sq.||1 coat AC5900 at 1.5 gal./sq.|