ROOFING SYSTEMS

METAL ROOF WATERPROOFING AND RESTORATIONS MASTER GUIDE SPECIFICATIONS

PART I - GENERAL

1.01 GENERAL

A. SCOPE:

To install an Tough Stuff coating system to waterproof and restore existing concrete substrates 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 cocuments 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 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

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 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 404 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 oversized version of the same fastener, i.e. aluminum, galvanized, or stainless must remain as designed by the manufacturer.

2.04 PRIMING
SURFACE PRIMER COVERAGE
RUST PR3450 .33 gal./sq.
ASPHALT AC5600 .5 gal./sq.
COATINGS PR3600
PR3500
AC5600
.2 gal./sq.
.33 gal./sq.
.5 gal./sq.
2.05 DETAILING JOINTS & FASTENERS

A. CLEANING:

Metal 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 for detail variances. There are 4 basic seam detail configurations:

B. VERTICAL SEAMS:

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

    1. Vertical Seam System A (UR1700 mastic): Hand or pump applied mastic.
      a. Brush or pump mastic into joints.
    2. Vertical Seam System B (UR1700 mastic with FA204 fabric): Reinforced with polyester.
      a. Apply UR1700 or AC5000 on joint at 1.5 gallons/square.
      b. Set 4” polyester in wet material. Reapply additional material at 1.5 gallons/square and fully saturate the polyester.
      c. If standing alone, apply an additional layer of material at 1.5 gallons/square.

C. FASTENERS:

Fasteners are detailed as required to make the system watertight.

    1. Dab each fastener with UR1700 mastic.

D. HORIZONTAL LAP JOINTS:

    1. Apply base coat of UR1700 urethane mastic at a rate of 7 gallons per square directly on the seams to be detailed. Material will taper from 100 mils at the joint to a feathered edge on the top and bottom. MateriaL coverage will vary with seam thickness.
    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 per square over liner.

E. URETHANE MASTIC

All purpose mastic can be used with urethane by adding 30-50% D200 by volume to the UR1700 urethane. Material consistency can vary from a whipped cream texture to a plastic cement type mastic. The light mastic can still be sprayed and back brushed. After the substrate has been cleaned and primed (if needed), apply a base coat of material over the seam area. Brush the material up into the joint. Vertical joints will need a 2” wide bead of material. Horizontal seams will need a minimum 6”-12” pass. Horizontal joints will include polyester. Material will taper from 100 mils at the joint edge on the top and bottom. Calculate 7 gallons per one hundred (100) square feet of seam area. Material coverage will vary with seam thickness.

WIDTH GAL./SQ. COVERAGE PRACTICAL COVERAGE
2" 7 GAL. 600 LINEAL FT. 400 LINEAL FT.
4" 7 GAL. 300 LINEAL FT. 250 LINEAL FT.
6" 7 GAL. 200 LINEAL FT. 150 LINEAL FT.
9" 7 GAL. 133 LINEAL FT. 100 LINEAL FT.
12" 7 GAL. 100 LINEAL FT. 75 LINEAL FT.

Acrylic mastic can be used on vertical joints of acrylic systems only. For horizontal joints of acrylic systems use the urethane mastic, urethane and polyester. Acrylic mastic is made by mixing AC5000 or AC5900 with D200 at 30-50% by volume. Acrylic detailing should be used with acrylic top coat only.

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. Catalyze urethane and mix for 4 minutes. Add filler mix and agitate until fully blended.
  2. Pour material in depression until level with roofing ribs.
  3. Cover perimeter of mix with UR1700 and polyester after curing.
2.07 APPLICATION OF FINISH COATS

A. MILLAGE:

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 METAL MATERIALS/APPLICATION/WARRANTY

FOR USE OVER METAL

WARRANTY
PERIOD
SYSTEM PRIMER BASE COAT/LINER MID COAT FINISH COAT
5 YEAR
(Option A)
MR
UR1700-5
Prime all rust with PR3400 at .5 gal./sq. Detail all seams and fasteners w/ UR1700 mastic & FA206 1 coat of UR1700 at 1.5 gal./sq.
5 YEAR
(Option B)
MR
AC5000-5
Prime all rust with PR3400 at .5 gal./sq. Detail all seams and fasteners with UR1700 mastic and FA206 1 coat of AC5000 at 1.0 gal./sq. 1 coat of AC5000 at .75 gal./sq.
5 YEAR
(Option C)
MR
AC5900-5
Prime all rust with PR3400 at .5 gal./sq. Detail all seams and fasteners with UR1700 mastic and FA206 1 coat AC5900 at 1.25 gal./sq.
10 YEAR
(Option A)
MR
UR1700-10
Prime all rust with PR3400 at .5 gal./sq. Detail all seams and fasteners with UR1700 mastic and FA206 1 coat of UR1700 at 1.5 gal./sq. 1 coat of UR1700 at 1.5 gal./sq.
10 YEAR
(Option B)
MR
AC5000-10
Prime all rust with PR3400 at .5 gal./sq. Detail all seams and fasteners with UR1700 mastic and FA206 1 coat of AC5000 at 1.5 gal./sq. 1 coat of AC5000 at 1.5 gal./sq.
10 YEAR
(Option C)
MR
AC5900-10
Prime all rust with PR3400 at .5 gal./sq. Detail all seams and fasteners with UR1700 mastic and FA206 1 coats AC5900 at 1.0 gal./sq. 1 coats AC5900 at 1.0 gal./sq.
METAL ROOFS - SEAMS AND DETAILS ONLY
5 YEAR
(Option A)
MSD
UR1700-5
Prime all rust with PR3400 at .5 gal./sq. Detail all seams and fasteners with UR1700 mastic and FA206