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 pickup
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 204 Deg
C (400 Deg F).
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
STANDARD formula is used in most climatic conditions. The TROPICAL formula is used in
climatic conditions where fungi growth is a major concern. The UL CLASS A formula is
used on projects where shear extra-high fire resistance is desired (i.e. oil & gas).
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 Thermo-Shield® water-based roof
coatings. Rusty surfaces require rust control prior to the application of the roof coats. See
application manual for details.
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.
White and any custom color available. Darker colors will give a correspondingly lower
SPECIFIED MINIMUM DRY FILM THICKNESS
(See Installer’s application manual for application rates on various substrates)
Flat Roofs: 700 microns DFT (27 Mills) at any location
Well Sloped or Pitched Roofs: 300 microns DFT (12 Mills) at any location
0.33 lbs / gallon
39.5 grams / liter
THEORETICAL COVERAGE (2 or more coats)
3 m² per gallon at 700 microns DFT (32 sf/gallon at 27 Mills DFT)
7 m² per gallon at 380 microns DFT (75 sf/gallon at 12 Mills DFT)
To set: 45 minutes
To re-coat: 12 hours
To through: 12 hours
At 24 Deg C (75 Deg F) 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 4 Deg C (-40 Deg F).
Reflectance 89%, Emittance 94%, Conductance 0.05 W/mK - 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 a surface. The amount of sun light left over after
the reflection process, can either be absorbed into the roof surface as heat, or emitted back
out into the atmosphere as infrared light, not heat. The emittance process leaves less than
2% of the radiant energy to be absorbed into the surface as heat. The Thermo-Shield®
coatings, although at a small thickness, have a very low conductivity value to do the rest of
the insulation work.
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).
Excellent adhesion to a wide variety of substrates: wood, urethane foam, galvanized steel,
aluminum, asphalt roof shingles, concrete, asbestos and many others.
RESISTANCE TO WATER PONDING
Excellent resistance to ponding water. This is the result of a careful balance 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%
None required. Clean water in small amounts of up to 0.24 Liter (1 cup) per gallon 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.
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 is
required for adequate protection.
Tip Orifice: .031 inches
Atomizing Pressure: 2200 - 2500 psi
Fan Spread: 60 Degrees
Pump: Minimum 1 gallon per minute at 2500 psi
Filter: Remove filters and screens
Prime pump with water before attempting to spray Thermo-Shield® Roof Coats.
This feature, unique to Thermo-Shield®, allows the membrane to perform unlike any other
coating. When conditions are dry, the polymers shrink and the pores open to allow trapped
water vapor to breathe out of the substrate, but when conditions are wet (raining, ponding
of water, etc.), the polymers swell, the pores close, and the entire membrane becomes
SPREADING RATE PER COAT (1 millimeter = 1000 microns)
m²/gallon WFT(microns) DFT(microns)
Suggested 9 371 (15 mills) 233 (10 mills)
Maximum 12 275 (11 mills) 175 (7 mills)
Minimum 6 567 (23 mills) 350 (14 mills)
This rate allows for 10% loss
Stir each container thoroughly using low speed mechanical agitation to avoid air
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 areas of low film thickness (i.e. less than the recommended thickness).
Acceptable equipment includes: Binks Super Hornet, Graco 433 or larger, and many
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 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.
5 gallon pails or Lined 55 gallon drums
APPROXIMATE SHIPPING WEIGHT
Net weight per gallon: 4.5 kg (10 lbs)
5 gallon pails: 22.7 kg (50 lbs)
55 gallon drums: 272 kg (600 lbs)
Store at minimum 1 Deg C (33.8 Deg F) - maximum 30 Deg C (86 Deg F) DO NOT
Minimum 2 years (keep from freezing)
SETA FLASH POINT
Non-Flammable (water based)
STANDARD WHITE: 5962 / STANDARD ACCENT BASE: 5965
TROPICAL WHITE: 5966 / TROPICAL ACCENT BASE: 5967 / UL CLASS A: 5975
5 years. Extendible to 10 or 15 years
The sole remedy for goods not in conformance with any warranty is replacement of the product. SPM Thermo-Shield® Inc. 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), Cool Roof Rating Council (CRRC), the
Environmental Protection Agency (EPA) and Underwriter Labratories (UL) state that the
following benefits are derived from the use of reflective coatings:
1) Reduction of energy use and cooling costs (up to 40%)
2) Downsizing of air-conditioning equipment
3) Lowering of the surrounding air temperature in a community
4) Decreasing of pollution in urban areas