Titebond WeatherMaster Sealant has been specifically formulated to outperform all other sealant technologies, including silicones and urethanes. This superior polymer formula provides the best possible performance on siding, windows, doors and vents. In addition to offering exceptional flexibility, it provides unbeatable adhesion to wood, fiberboard, vinyl, aluminum, metal, brass and other common building materials--making it a fantastic all-purpose caulk for weatherization, sealing and other uses.

If touch-ups are necessary, it is paintable in less than one hour after application. It is waterproof, extrudes in extreme weather conditions and is UV-resistant, making it the ideal choice for exterior applications. Safety is not compromised, as this sealant contains no solvents or isocyanates and is VOC-compliant.

Features:

• Outperforms both silicone and urethane sealants
• Superior polymer technology
• Applies easily in extreme weather conditions
• Fills gaps up to 1 inch wide
• Permanently flexible and watertight seal
• UV-resistant
• VOC-compliant, no solvents or isocyanates
• Can be painted in less than one hour after application
• Passes ASTM C920 Type S Grade NS Class 25, Use NT, M, G and A
• Passes Federal Specification TT-S-00230C, Type II, Class A
• Passes CAN/CGSB-19 13-M87, Classification MCG-2-25-A-N, No.81026
• USDA approved for use in meat and poultry areas
• Passes ASTM C719, ASTM D412, ASTM C661, ASTM C679 and ASTM C510

Coverage: (Approximate length of bead according to bead diameter):

• 1/4" bead: 32 ft.
• 3/8" bead: 13.5 ft.
• 1/2" bead: 7.5 ft.

Specifications
Type: Advanced polymer (reactive)
Calculated VOC (less water): 11 g/l (<3% wt)
Application temperature:Above 0°F
Service temperatures: -75°F to 350°F
State: Medium-viscosity caulk
Weight/gallon: 8.68 - 12.5 lbs
Flashpoint: Greater than 200°F
Solids: 99%
Freeze/thaw stability: Stable
Viscosity: 450,000 - 550,000 cps
Storage life: 12 months in tightly closed containers at 75°F

Limitations: Air, caulk and surface temperature should be above 0°F. WeatherMaster may be painted anytime after one hour with water-based paint. For other types of paints, we recommend a compatibility test. If joint depth exceeds 5/16", use backing material. Not designed for continuous submersion or use below the waterline.

Caution Statement: CAUTION: EYE AND SKIN IRRITANT. Do not swallow. Do not allow eye contact or prolonged skin contact. First Aid: If swallowed, do not induce vomiting; contact physician. If eye contact occurs, flush with water for 15 minutes. Wash skin contact areas with soap and water. If irritation from eye or skin contact areas persists, contact physician. Product releases methanol during cure.** For additional information, refer to Material Safety Data Sheet. KEEP OUT OF THE REACH OF CHILDREN.