Specifications Thermo-Shield Roof Coat

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:

Insulation

Although 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® that 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. Sunlight only produces heat when it is absorbed by the roof surface, so 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.

Typical 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 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.

Percent Non-Volatile

51.67% by volume / 51.14% by weight

Specified Dry Film Thickness

Theoretical Coverage (2 or more coats)

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)

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.

Drying Time

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).

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 lose 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:

Application Methods

To ensure 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

Storage

Minimum 0 Deg C – Maximum 30 Deg C Do not freeze

Shelf Life

Minimum 2 years (keep from freezing)

SETA Flash Point

Non-Flammable (water based)

DOT Class

Not regulated

Product Codes

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.