ROOF COATS
DESCRIPTION
Thermo-Shield® Roof Coats are highly efficient, energy-saving, flexible coatings, made from a water-based pure acrylic resin system filled with vacuumed sodium borosilicate ceramic micro spheres of less than 100 microns in size. Each micro sphere acts as a sealed cell and the entire mastic acts as a thermally efficient blanket covering the entire structure. These coatings are non-toxic, friendly to the environment, and form a monolithic (seamless) membrane that bridges hairline cracks. They are completely washable and resist many harsh chemicals. Thermo-Shield® Roof Coats have high reflectance and high emittance as well as a very low conductivity value. Thermo-Shield® Roof Coats greatly reduce thermal shock and heat penetration by keeping roof surfaces much cooler in hot summer weather. They offer UV protection and low VOC's. They display excellent dirt pick-up resistance and retain their flexibility after aging. Thermo-Shield® Roof Coats reduce noise transmission and have an effective use range from -40 Deg C (-40 Deg F) to 375 Deg C (700 Deg F).
USES
Primarily used as a roof coating where joints, seams, cracks and gaps around protrusions are reinforced with a 100% polyester spun laced fabric embedded in the membrane. They may be utilized wherever a weather resistant membrane-like coating is required. The STD formula is used in most climatic conditions. The TROPICAL formula is used in climatic conditions where fungi growth is a major concern. The ULA formula is used on buildings and installations where shear extra-high fire resistance is desired i.e. oil & gas.
PRIMER
No primer is usually required. Follow instructions for proper application regarding guaranteed systems on bitumen roofs. Our acrylic Flex Tac bonding coat is required to obtain good adhesion between a bitumen substrate and these water-based roof coatings. Rusty surfaces require rust control prior to the application of the roof coats. See application manual for details.
SURFACE PREPARATION
All surfaces must be clean and free from laitance (efflorescence), dust, dirt, oil and grease. Minimally, surfaces should be power washed prior to coating, providing this will not damage the roof or cause leaks.
COLOR
Tinting may be achieved with Thermo-Shield® Roof Coats by the addition of universal colorants. Darker colors will give a correspondingly lower reflectivity.
SPECIFIED DRY FLIM THICKNESS
Flat Roofs 700 microns DFT (27 mills)
Sloped Roofs 300 microns DFT (12 mills)
PERCENT NON-VOLATILE
51.67% by volume
51.14% by weight
THEORETICAL COVERAGE (2 or more coats)
3 m2 per gallon at 700 microns DFT (32 sf/gl at 27 mills DFT)
7 m2 per gallon at 300 microns DFT (75 sf/gl at 12 mills DFT)
DRYING TIME
To set: 45 minutes
To re-coat: 12 hours
To through: 12 hours
At 24 Deg C and 50% relative humidity
After 45 minutes, Thermo-Shield® Roof Coats have surface set to the point where they are no longer susceptible to airborne dust and will not run in the presence of increased humidity. Do not apply Thermo-Shield® Roof Coat if precipitation is imminent, or is likely to occur before Thermo-Shield® Roof Coats are dry through, or if temperature is expected to drop below 40 Deg C (-40 Deg F).
INSULATION
Alathogu these Roof Coats enjoy very low Conductance (0.05 W/mK), it is the combination of their high Reflectance (82%), high Emittance (94%) and Endothermic Effect® what makes them a very good choice for protecting your roofs from heat buildup. Unlike typical mass insulation, where heat conduction is just slowed down, this technology keeps the heat out. Sun light only produces heat when it is absorbed by the roof surface, and being able to keep heat from forming into the surface of the roof is a very effective way to insulate. The cooling process of Endothermic Effect® ensures that the surface continues to insulate, even if Reflectance is diminished with aging, dust build-up or darker colors.
FLEXIBILITY
Coatings remain flexible at -50 Deg F (-45.6 Deg C) - Eliminate thermal-shock damage - Maintain their strength at 400 Deg F (204.44 Deg C).
ADHESION
Excellent adhesion to a wide variety of substrates: wood, urethane foam, galvanized steel, aluminum, asphalt roof shingles, concrete, asbestos and others.
RESISTANCE TO WATER PONDING
Excellent resistance to ponding water. This is the result of a careful balancing of the following properties: Passage of bulk water at 50 hours…40-55 mg/m2 - Permeability (ASTM E 96-80)…08.80% Perms - Film Swelling (at Equilibrium)…10.17%
VARIABLE PERMEABILITY
This feature, unique to Thermo-Shield®, allows the membrane to perform unlike any other coating. When conditions are dry, the polymers shrink and open pores to allow trapped water vapor to breathe out of the substrate, but when conditions are wet (raining, ponding of water, etc.), the polymers swell, close the pores, and the entire membrane becomes watertight.
SPREADING RATE PER COAT (1 millimeter = 1000 microns)
Suggested: 9 sm/gl - 371 microns WFT (15 mills) - 233 microns DFT (9 mills)
Maximum: 12 sm/gl - 275 microns WFT (11 mills) - 175 microns DFT (7 mills)
Minimum: 6 sm/gl - 567 microns WFT (22 mills) - 350 microns DFT (14 mills)
This rate allows for 10% loss
MIXING
Stir each container thoroughly using low speed mechanical agitation to avoid air entrapment.
NUMBER OF COATS
Two to three-coat application (minimum dry film-build of 700 microns DFT for flat and asphalt shingle granulated roofs, and 300 microns for well sloped roofs) will give the best long-term protection at minimum cost. The principle cause of coating failure is water ponding in low film thickness i.e. less than the recommended thickness.
THINNING
None required. Clean water in small amounts of up to 0.24 Liter per gallon (1 cup) may be added to replace evaporation losses or to adjust for spray equipment configuration. Caution: excessive thinning will cause the coating to loose adhesion and elasticity.
EQUIPMENT
Roller or airless spray application is recommended. Very small areas may be brushed. When Thermo-Shield® Roof Coats are applied by brush, three (3) coats cross-brushed are required for adequate protection.
Airless Spray:
Tip Orifice .031 inches
Atomizing Pressure 2200 - 2500 psi
Fan Spread 60 degrees
Pump / 1 gallon per minute at 2500 psi
Filter / Remove filters and screens
Prime pump with water before attempting to spray Thermo-Shield® Roof Coats. Acceptable equipment includes; Binks Super Hornet, Graco 433 or larger, and many others.
METHODS
To assure adequate and uniform coverage, the “spray and back roll” techniques are recommended. Thermo-Shield® Roof Coats should be applied in full wet coats.
CLEAN UP
Clean tools and equipment with warm soapy water. Rinse with clean water; flush mineral spirits through spray equipment to prevent rusting and to lubricate packing and gaskets.
PACKAGING
One and five-gallon pails. Lined 55-gallon drums.
APPROXIMATE SHIPPING WEIGHT
Net weight per gallon / 4.64 kg (10 lbs)
Case of 4 1-gallon cans / 20.4 kg (45 lbs)
Five-gallon pail / 24.13 kg (53 lbs)
55-gallon drum / 279 kg (615 lbs)
STORAGE
Store at minimum 0 Deg C - maximum 30 Deg C (32 Deg F - 86 Deg F) Do not freeze
SHELF LIFE
Minimum 2 years (keep from freezing)
SETA FLASH POINT
Non-Flammable (water based)
DOT CLASS
Not regulated
PRODUCTS CODES
STD WHITE: 5962 – STD ACCENT BASE: 5965 – TROPICAL WHITE: 5966 – TROPICAL ACCENT BASE: 5967 - CLASS A: 5975
WARRANTY
10 years extendible to 20
EXCLUSIVE REMEDY
The sole remedy for goods not in conformance with any warranty is replacement of the product or return of the purchase price. SPM Thermo-Shield® shall not be liable for any other damages, including, but not limited to labor expenses.
Thermo-Shield® is a charter member of the U.S. Government Energy Star Roof Program. The U.S. Department of Energy (DOE) and the Environmental Protection Agency (EPA) state the following benefits are derived from the use of reflective coatings:
1) Reduction of energy use and cooling costs (up tp 40%)
2) Downsizing of air-conditioning equipment
3) Lowering of the surrounding air temperature in a community
4) Decreasing of pollution in urban areas
