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Kool Seal® Tundra™ Silicone Rubberized Gray Roof Coating

1 of 13 products in this brand
Kool Seal® Tundra™ Silicone Rubberized Gray Roof Coating is a premium, silicone rubber roof coating ideal for ponding water.

Product Type: Elastomeric Coating, Solventless & High Solids Coating

Features: Cleanable, Excellent Flowability, Excellent Substrate Adhesion, High Solids Content, UV Resistant, Water Resistant

Compatible Substrates & Surfaces: Asphalt, Concrete, Elastomers & Rubbers, Metal, Wood

Application Method: Brush, Roller, Wipe

Chemical Family: Silicones

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Features and Benefits
  • Limited Lifetime Warranty
  • 100% silicone
  • High solids
  • Superior finish with excellent leveling
  • Outstanding adhesion to most roofing material

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Recommended Uses
  • Metal, single ply, smooth BUR, APP, SBS, modified bitumen, polyurethane foam, cured concrete, existing asphaltic and elastomeric roof coatings and other approved surfaces.
  • Not for use on roof shingles.
  • EPDM rubber roofs must be primed with bonding primer designed for EPDM roofs. Other roof substrates including TPO, PVC, metal or asphalt may require primer before application. An adhesion pull test should be performed to determine if a primer is needed. A basecoat will be needed for asphalt surfaces to reduce asphalt bleed and to ensure they get two full coats for warranty purposes.
Drying Time

Dry to recoat six hours; full cure 72 hours at 70 °F and 50% relative humidity at two gallons per square; dry times will be accelerated by higher temperatures and higher humidity; cooler weather, thicker films, poor air flow and low humidity can slow dry time.

Surface Preparation

Removal of old paint by sanding, scraping or other means may generate dust or fumes that contain lead. Exposure to lead dust or fumes may cause brain damage or other adverse health effects, especially in children or pregnant women. Controlling exposure to lead or other hazardous substances requires the use of proper protective equipment, such as a properly fitted respirator (NIOSH approved) and proper containment and cleanup.

All surfaces should be clean and dry. Application to a wet or damp surface will compromise adhesion. Treat rust with proper primer. If mildew is present, surfaces should be cleaned with a proper bleach solution (one part bleach to 2 parts water). It is necessary to pressure wash all surfaces (using a wide spray tip, minimum 2000 psi) before applying this roof coating. A pull test sample should be done on all roofs to verify proper long term adhesion. Asphalt-bleed blocking primer is recommended over asphalt substrates to limit staining and discoloration. Repair cracks and damaged areas with Tundra Silicone Sealant and reinforce with a layer of Kool Seal® Storm Patch® Polyester Fabric. Allow all sealants and primers to fully cure per manufacturer directions prior to topcoating.

Application

Ideal application is when surface and air temperatures are between 45°F and 99°F. Do not apply to roofs when air temperatures exceed 120°F. Surface must be completely dry (including free of dew or frost) before applying. Apply on a clear, dry day with an optimal humidity level of 70%; hotter temperatures and higher humidity causes product to cure more quickly. Keep from Freezing.

Note: Stir 5-gallon pail of product on jobsite prior to pouring onto roof. Do not have pails shaken at store. Pour product onto roof surface and spread using a roof brush or notched squeegee to achieve a dry film thickness of 30 mils. Backroll with a 3/4” nap roller to fill voids and create a uniform finish. Avoid excessive rolling. Coating application options: If one coat application is desired, apply one coat at 50 sq. ft. per gallon. If applying in two coats, apply each coat at one gallon per 100 sq. ft. Finished coverage will be the same at covering 250 sq. ft. of roof surface per 5-gallon bucket. Do not apply if heavy dew or rain is expected within two to four hours.

Clean Up

Clean tools immediately with 100% Virgin Mineral Spirits or Naptha

Coverage Rate

On most smooth roofing substrates, product will cover at a rate of 50 square feet/gallon per coat, at a dry film thickness of 30 mils. Textured, porous and worn surfaces may require more product to cover. For metal, it will cover approximately 50 square feet/gallon per coat.

Properties

Color
Typical Properties
ValueUnitsTest Method / Conditions
VOCmax. 10g/L-
Solids (by Volume)95.0%-
Solids (by Weight)95.0%-

Regulatory & Compliance

Certifications & Compliance

Safety & Health

Cautions

For exterior use only. Protect building inlets from product vapors or fumes. Do not allow product to freeze. Protective clothing, gloves and eyewear should be used during application of these products. When transporting this product, ensure that lid is tight and pail is secure and upright. Do not allow pail to tumble as this may cause lid to loosen and leakage to occur. Do not transport on passenger seats or inside the passenger compartment of any vehicle. Seal container when not in use. Do not walk on coating until fully cured. The contents of this container are reactive with moisture in the air. Curing starts immediately upon opening and opened product cannot be returned. Use all contents within one day of opening.

Do not reuse empty containers.

Ponding water creates excessive weight on roofs and may compromise structural integrity leading to a potential collapse hazard. Always follow the National Roofing Contractors Association guidelines to remove ponding water from roof surfaces. SLIP WARNING: Use extreme caution when walking or working on silicone-coated surfaces and apply traction promoting particles in coating if needed for walkway areas. If there will be foot traffic on roof after installation (and cured), embed 40-60 lbs. of #11 ceramic granules per 100 sq. ft. into top layer of coating to create a nonskid finish. Surfaces without granules are slippery when damp or wet. Use OSHA-approved fall protection when on roof surfaces. Applications to TPO, EPDM and Hypalon require an appropriate primer.

Packaging & Availability

Packaging Type
Ordering Information
Part Number Color/Size
KS0064920-20 Gray (5-Gallon Pail)
KS0064920-27

Gray (55-Gallon Drum)