• Premium, solar reflective, urethane, waterproofing coating for all kinds of roofs.
  • Tough and elastic with high tensile strength and good puncture resistance.
  • Fire retardant and protects against rust and corrosion.


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POLAROOF RAC is a single component urethane, modified with bright aluminum flakes and fire retardant chemicals. It is especially designed as a waterproofing membrane for all kinds of roofing. POLAROOF RAC is tough and elastic with a high tensile strength and good puncture resistance, and contains corrosion-inhibiting pigments for protection against rust and acid rain. POLAROOF RAC is approved by Underwriters Laboratories® (UL) and Factory Mutual Research Corporation® (FM).

Outstanding Features

  • Produces a fully adhered, seamless, high density, waterproofing membrane.
  • Helps reduce energy costs by providing both solar reflection and radiant heat reflection.
  • Protects substrate against rust, corrosion, UV damage and acid rain.
  • Easy to apply straight out of the container by brush, roller, or airless spray.
  • May be used on vertical, pitched and horizontal surfaces and withstands ponding water.
  • Lightweight membrane does not require removal old roofing materials, saving time and money.
  • Produces a waterproof surface that will not be deteriorated by fungal growth or algae.
  • Remains flexible, tough and weatherproof at low temperatures and will not flow at high temperatures.
  • Rapidly develops high tensile strength.
  • Will not re-emulsify or wash away with rainwater.
  • Will not become brittle and crack with age.
  • Can easily be recoated.
  • Ten year material warranty.

Recommended for

Can be used over asphalt BUR, coal tar BUR, concrete, foam, EPDM, glass, insulation, most metals, modified bitumen, wood, masonry, plywood, PUF, PVC/TPO/hypalon, single-ply, slate/tile and other approved surfaces.


Approximate 33 – 50 sq ft/gal, depending upon substrate

Container sizes

1 gallon, 5 gallon, 55 gallon


Bright Silver


Moisture-cure urethane


Test Reports


Preparation and Application

Surface Preparation
Surfaces must be dry, free of dirt, loose debris, oils, grease or any substance that could interfere with adhesion. Surface must remain at least 5°F above dew point during the application and curing process. Polaroof RAC should never be applied to a wet or damp surface, or pinholes may result.

Do not apply if the substrate or air temperature is predicted to drop below 35°F (2°C) within 4 hours after application. The application surface must remain at least 5°F (3°C) above dew point during the application and curing process. Do not apply Polaroof RAC to wet, damp, or frozen surfaces. Do not apply if the area cannot be protected from precipitation for at least 4 hours after application.

Polaroof RAC is applied directly out of the container after at least 2 minutes of low speed drill stirring. Do not thin the product. Apply in 2 coats using a soft brush, medium nap roller, or airless sprayer in a smooth, even technique.

Reinforcing over seams on Metal Roofs:
Achieved by embedding ROOFAB into a fresh coat of POLAROOF RAC applied at 15 to 25 mils wet thickness. The fabric is then brushed thoroughly to squeeze the POLAROOF RAC upwards to remove all voids, fishmouths and dry spots. A second coat is then applied to seal the surface of the fabric. Bolt-heads on metal roofs should be daubed with sufficient POLAROOF RAC that they are encapsulated to the point of rundown. As soon as the POLAROOF RAC has dried, it may be coated with POLAROOF RAC or other compatible topcoat.

Application over EPDM, Modified and other roofs:
Requires the preparation detailed above, including reinforcement of seams. Some types of rubbers will swell slightly immediately upon application. This is normal, the adhesion process is complete when the original dimensions have returned. New urethane foam should receive 2 coats of POLAROOF RAC at 15 mils wet thickness per coat. Sudden precipitation will not wash POLAROOF RAC off when wet or newly applied, but will produce a mottled, dull appearance that is not detrimental to overall appearance.

Spray Application
Utilize a 30:1 airless pump, a 3/8″ moisture excluding hose and a 33 width tip

Recommended Thickness
2 coats yield 30 mils Dry Film Thickness (DFT)

Dry time to walk on
Approximately 24 hours at 80°F (27°C) and 70% RH.

Total Curing Time
Approximately 72 hours at 80°F (27°C) and 70% RH.

Clean up
Clean tools and equipment with Xylene or Aromatic Naptha

Store in a dry area and protect from direct sunlight and freezing. Keep container tightly sealed. Shelf life is 2 years from date of manufacture when stored in a factory sealed container between 50ºF (10ºC) and 81ºF (27ºC).

Waste disposal must be in accordance with existing federal, state and local environmental control laws. Incineration is the preferred method of disposal.


Read the container label warning and Safety Data Sheet (SDS) for important health and safety information prior to the use of this product.


For additional information, contact the Andek Technical Department


Polaroof RAC Application Guide over various Roof Substrates


Technical Data
VOC 200 gms/liter
Moisture Vapor Transmission 1.57 perms ASTM E-96
Tensile Strength 600 psi ASTM D-412
Elongation 500% ASTM D-412
Flexibility at Low Temperatures 180° bend @ -10° C ASTM C-711
Shore ‘A’ Hardness 56 degrees ASTM D-2240
Surface spread of flame
Class 1 ASTM E-108
Puncture Resistance
120 psi ASTM D-154-79
Viscosity at 70°F
4,500 cps ASTM D-446
Solids Content 82% (B.W.); 94% (B.V.) ASTM D-1044