SECW: Roof Coatings Commercial Roofing Flat Roofing Repair Metal Roof Repair

Leak Proof Warranties

Polyurethane Foam System On Metal, Smooth Built Up or Gravel Built Up Roofs

Each job must be approved by Southeastern Coatings before the job begins in order to receive the Labor & Material Warranty.

PART 1 - GENERAL

Sprayed in place polyurethane foam is applied at a desired thickness (1" (3 cm) minimum) to fulfill thermal insulation requirements and to provide seamless monolithic surface over a variety of roof designs, shapes, and draining slopes.

The deck should have at least a 1/4" (.6 cm) to the foot slope for drainage and avoid ponding water. Ponding water is defined as standing water in excess of 100 square feet (10 m2) or in excess of 1/2" (1 cm) deep or water that does not evaporate within 72 hours.

Thickness of the foam insulation may be varied to allow slope to drain, build crickets in corners, and fill low areas. The appearance of the system depends on the surface of the foam insulation that normally has slight profile. Sprayed in place polyurethane foam will follow the contour of substrate, reflecting projections and depressions.

1.1 SUBMITTALS

A. Product Data: Submit manufacturers standard submittal package including specification, installation instructions, and general information for each waterproofing material.

B. Applicator Qualifications: Submit current "Qualified Applicator" certificate from the specified waterproofing manufacturer.

C. Substrate Conditions:

1. Surface shall be free from loose dirt, stone, debris, moisture, and shall be in stable condition. Any work on the area to receive this application shall be completed prior to installation.

2. Applicator shall complete a substrate inspection prior to start of roofing. The architect/owner and applicator shall accept the surface. Start of the work constitutes acceptance.

1.2 QUALIFICATIONS

A. Primary polyurethane foam insulation

1. Single manufacturer. Manufacturer shall have a minimum of 5 years experience in the manufacture of materials of this type.

2. Applicators shall have a minimum of 5 years experience in the application of waterproofing materials of the type specified. Applicator shall possess a current "Qualified Applicator" certificate from the specified polyurethane foam manufacturer.

B. Pre-Installation Conference: Just prior to commencement of the installation, meet at the site with a representative of Southeastern Coatings, the polyurethane foam manufacturer, the waterproofing contractor, the general contractor, may be necessary to. review methods and procedures, substrate conditions, scheduling and safety.

1.3 DELIVERY, STORAGE AND HANDLING

A. Delivered all materials in sufficient quantities as not to cause delays in application of the roofing system. Owner/owner's representative shall reject damaged materials not conforming. Rejected materials shall be removed immediately from the job site and replaced at no additional cost to the owner.

B. Store materials as recommended by manufacturer and conforming to applicable safety regulatory agencies: Town, state, and federal. Refer to all applicable data including but not limited to MSDS sheets, Product Data sheets, product labels and specific instructions for personal protection.

C. Provide adequate ventilation, protection from hazardous fumes, and overspray potential to workers and associated trades in close proximity of site applications.

1.4 ENVIRONMENTAL REQUIREMENTS

Proceed with work of this section only when existing and forecasted weather conditions will permit the application to be performed in accordance with the polyurethane foam manufacturer's recommendations.

A. Do not install foam insulation under the following conditions:

1. When ambient temperature is below 50°F (10° C) or surface temperature is above 160°F (71° C).

2. When relative humidity is above 80%.

3. When wind velocity exceeds 15 mph (Without use of windscreen)

1.5 WARRANTY

A. Provide a 10-year material warranty to be issued jointly by the contractor and the manufacturer after substantial completion of work. The warranty shall cover all materials (foam and coating) and necessary to repair defects caused from normal weathering or material defects. Contractor must be eligible for, and make application to, Southeastern Coatings, prior to start of work under this section.

B. Protection of building and occupants:

1. All surfaces not to receive system specified shall be protected from overspray hazard i.e. windows, doors, exterior and vehicles. Protective coverings shall be secured against wind and shall be vented if used in conjunction with applications preventing collection and moisture.

2. Southeastern Coatings recommends contractor post signs noting potential overspray hazard within 400' (122 meters) of applications.

3. All air intake ventilation equipment shall be turned off to prevent fumes from entering building.

4. Surfaces damaged during application shall be restored at no expense to the owner.

C. Substrate: Proceed with work as specified only after substrate construction, preparation, and detail work has been completed.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

Acceptable Manufacturers:
Gaco Western, Inc., Foam Enterprises, Southeastern Coatings. Contact Southeastern Coatings for approval of other foam mfgs.

2.2 MATERIALS

A. Primer: Use FABRIC BOND 930, OR NEOPREME PRIME 940 depending on the substrate to be coated. Contact Southeastern Coatings for more information

B. Polyurethane Foam: Specifier should use a 2.7LB density to 3.0LB density foam.

C. Elastomeric Base Coating: Southeastern Coatings' ACRYLIC 210, ACRYLIC 211, BUTYL 310, or SILICONE 410.

D. Elastomeric Top Coating:

1. Southeastern Coatings' 210, 211, 310, or 410.

2. Southeastern Coatings' 310 or 410 in low slope situations where puddling occurs.

E. Miscellaneous Accessories: All items incorporated into this system shall be compatible with and approved by Southeastern Coatings.

2.3 PERFORMANCE QUALIFICATIONS

A. General: This entire system including all accessories shall be a seamless, insulated and waterproof roofing system designed for the intended use. It shall meet the requirements of UL 790 Class A on non-combustible substrates. It shall not be adversely affected by normal weathering for exposure to occasional foot traffic required for maintenance of roof
mounted equipment. The service temperatures of this system shall range from -40°F to 200°F (-40°-93° C) (exempt acrylics which would be 0°F to 200°F) (18°-93° C). It shall be tested by the manufacturer to meet the following minimum physical properties.

B. Polyurethane Foam: In addition to the following minimum properties the polyurethane foam insulation shall be designed for spray application resulting in high quality, rigid polyurethane foam under the prevailing application conditions. The blowing agent shall be HCFC. Polyurethane foam shall be of the proper formulation (winter grade, summer grade, regular grade, or cold weather) to meet climactic conditions at the time of application.

1. PolyFoam 2.75

Property	Test Method	Minimum Value
Nominal Density	ASTM D-1622-93	2.5/2.9 lbs/ft³ (40/46 kg/m³)
Closed Cells	ASTM D-2856	94 %
Compressive	ASTM D-1621	41 psi (.28 MPa)
Shear	ASTM C-273	41 psi (.28 MPa)
K Factor	ASTM C-518
R Factor		7.3
Flammability	ASTM E-108/UL790	As a system

2. PolyFoam 3.03

Property	Test Method	Minimum Value
Nominal Density	ASTM D-1622	2.8/3.2 lbs/ft³ (45/51 kg/cm³)
Closed Cells	ASTM D-2856	95 %
Compressive	ASTM D-1621	52 psi (.36 MPa)
Shear	ASTM C-273	46 psi (.32 MPa)
K Factor	ASTM C-518
R Factor		7.69
Flammability	ASTM E-108/UL790	As a system

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that substrate is ready to receive work; surface is clean, dry and free of substances that could affect bond.

B. Cleaning of the roof should be accomplished by using power vacuum equipment, power sweepers, air blowers, power washers or other suitable means.

C. All associated construction (i.e. drain installation, edge flashing, penetrations and mechanical apparatus) shall be completed prior to commencement of specified roofing system.

D. Verify that all other work involved with this area, done under other sections, has been completed and accepted by the general contractor prior to starting the waterproofing application.

3.2 PREPARATION

A. Clean substrate to remove any and all surface contaminants.

B. Mask off all adjoining areas that will not receive the roofing system.

3.3 INSTALLATION

A. Technical Advice: The installation of this roofing system may be accomplished in the presence of, or with the advice of the manufacturer's technical representative.

NOTE: Appropriate primer shall be as specified and/or at direction of the manufacturer's representative. Also not foam thickness specifications are based on individual substrates waterproofed. Contact Southeastern Coatings for more information

B. Install Polyurethane Foam_____ in a thickness of ______ (1/4"(.6 cm), (1" (3 cm) minimum required.) Neatly terminate the sprayed-in-place polyurethane foam on all vertical surfaces, (i.e. pipe penetrations, vents, mechanical equipment, parapet walls, etc.) a minimum of 3" (8 cm) or 2 1/2 times as specified minimum foam thickness.

Example: If 1" (3 cm) minimum is specified, all vertical terminations shall have a minimum of 2 1/2" (6.4 cm) sprayed up onto the vertical surface and canted to the horizontal surface.

1. The foam spray application shall be limited to only that amount which can be completed to full foam thickness in one day and base coat applied.

2. The completed foam surface shall be between smooth to orange peel in surface texture. Popcorn texture is not acceptable.

3. The completed surface shall be free of pinholes and "fisheyes" due to improper equipment calibration or climactic condition.

4. The polyurethane foam shall be sprayed in a manner so as to achieve a full and proper spray pattern. The foam application shall be applied in passes no less than 1/2" (1 cm) in thickness.

A. Base Coating: Within 48 hours of the foam application apply a coat of one of Southeastern Coatings elastomeric coatings at a rate of 1.5 gallons per one hundred square feet.

B Second Coat: Allow 24-48 hours for the base coat to dry, then apply a second coat of Southeastern Coatings elastomeric coating at a rate of 1.5 gallons per 100 square feet. Allow 24-48 hours to dry.

C. Top Coating: A third coat may be required to achieve proper mill thickness. If so apply 1 to 1 gallon per 100 square feet of Southeastern Coatings elastomeric coatings. Contact Southeastern Coatings for more information.

NOTE: ALL ROOFS WITH LESS THAN 1/2 PITCH. May require either the SILICONE 410 or the BUTYL 310.

Southeastern Coatings, Elastomeric Coatings provide the necessary flexibility, toughness and weather resistance for long-term protection of the foam insulation. The system is designed to achieve a uniform coating thickness over the urethane foam insulation, which has a slightly textured finish.