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Titebond Radon Sealant

Titebond® Professional Radon Sealant is specifically designed to reduce the entry of radon. It should be used on foundation cracks, joints and penetrations, around foundation coatings normally used for damp proofing, and membranes surrounding the foundation. It is an extremely flexible and durable product which allows for extension and compression of at least 25%. The mold and mildew resistant formula dries quickly and can be painted within 2-4 hours of application.

Titebond Professional Radon Sealant is a VOC-compliant formula containing no added ozone-depleting chemicals, making it safer for you and the environment. It is nonflammable, emits no harmful fumes and cleans up with water.

Download Titebond Radon Sealant Sheet

    Complies with the following requirements:
  • ASTM C920, Grade NS, Class 25
  • ASTM C834, Type OP, Grade -18°C
  • Federal Specification TT-S-00230C Type II Class A

Revised August 2017

  • Environmentally safe - VOC-compliant

  • Seals foundation gaps

  • Effective barrier to air, dirt, insects and radon

  • Extremely flexible with enhanced durability

  • Easy paintability and cleanup of an acrylic

Type: Acrylic Non-reactive VOC: 25 g/L (<1.5% wt.) Color : Concrete Gray Weight Per Gallon : 13.5 lbs. Solids : 82% Flashpoint : Solvent free/Not applicable Viscosity : 450,000 cps Freeze/thaw Stability : Stable Storage Life : 24 months in tightly closed containers at 50°F to 80°F

Coverage (maximum): Approximate length of bead according to bead diameter:
Container 1/4" bead 3/8" bead 1/2" bead
10.1 oz. Cartridge 31 ft. 14 ft. 8 ft.

Application Temperature

Above 40°F and below 120°F.

Service Temperature Range

-25°F to 180°F.

Method of Application

Cartridge/caulking gun

Working Time

Approximately 15-20 minutes for a 1/4" bead

Working Surfaces

Surfaces must be cleaned down to the original substrate, dry, and free from any material that may deter adhesion.


Clean excess material with a damp cloth. Clean hands and tools with soap and water. Scrape dried excess.

Dry Time

Sealant should be dry to the touch and ready to paint in 2-4 hours.

Note According to the EPA, sealants can help limit the entry of radon through the foundation. It is also recommended that a professionally installed radon mitigation or fan based system be used in conjunction with this sealant.
Do not apply if rain is expected within 12 hours. Air, sealant and surface temperature should be above 40°F. It is not designed for continuous submersion or use below the waterline. For questions, please call our toll free Help Line at 1-800-347-4583.
WARNING: EYE, SKIN AND RESPIRATORY IRRITANT. Contains acrylic polymer, limestone, titanium dioxide, ethylene glycol. May cause eye irritation. Long term exposure to ingredients in this product can increase the risk of certain cancers. Adverse reproductive effects have been reported in animals. Avoid contact with eyes, skin and clothing. Use only with adequate ventilation. Wear appropriate personal protective equipment. First Aid: If swallowed, do not induce vomiting; contact physician. If eye contact occurs, flush eyes with water for 15 minutes; contact physician. Wash skin contact areas with soap and water; contact physician if irritation persists. For additional information, refer to Safety Data Sheet. KEEP OUT OF THE REACH OF CHILDREN.
This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm.
Part No.SizeWeight(lbs.)UPCCase UPCUnits Per PackagePackages Per Pallet
325110.1 Oz. Cartridge - Gray15.000370830325121003708303251912108
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