Premium Polyurethane Sealants for Superior Protection

Polyurethane sealants offer exceptional durability and flexibility, making them ideal for construction, automotive, and industrial applications. Our high-performance polyurethane sealants provide superior adhesion to multiple substrates while maintaining excellent weather resistance.

Key Features of Our Polyurethane Sealants:

• High elasticity and elongation capacity (up to 500%)
• Excellent UV and weather resistance
• Strong adhesion to concrete, metal, wood, and most building materials
• Available in various colors to match your project requirements
• Paintable surface after proper curing
• Low VOC formulations available
• Temperature resistance from -40°F to 180°F (-40°C to 82°C)

Technical Specifications

Polyurethane Sealants FAQ

Q: What surfaces can polyurethane sealants adhere to?
A: Polyurethane sealants bond exceptionally well to most construction materials including concrete, masonry, metal, wood, glass, and many plastics. They're particularly effective where different materials meet, as they can accommodate different expansion rates. For optimal adhesion, surfaces should be clean, dry, and free from dust, oil, or loose particles.

Q: How long does it take for polyurethane sealants to cure completely?
A: While polyurethane sealants typically become tack-free within 45-90 minutes, complete curing depends on environmental conditions. Under standard conditions (70°F and 50% relative humidity), full cure is achieved in 7-14 days. Curing time can be affected by temperature, humidity, and joint depth - curing progresses from the outside in, so thicker applications require more time.

Application Guide

1. Prepare the surface by cleaning thoroughly and removing any old sealant
2. Use backer rod for joints deeper than 1/2 inch (13mm)
3. Cut nozzle at 45° angle to match joint width
4. Apply sealant in a continuous bead, slightly overfilling the joint
5. Tool immediately using a putty knife or specialized tool
6. Clean excess sealant before it skins over

Polyurethane Sealants vs. Other Sealant Types

Polyurethane Sealants FAQ

Q: Can polyurethane sealants be painted over?
A: Yes, one of the advantages of polyurethane sealants over silicone is their paintability. After full curing (typically 7-14 days), most water-based and oil-based paints will adhere well to the sealant surface. For best results, clean the surface and use a primer if painting with oil-based products. Always test paint compatibility in an inconspicuous area first.

Common Applications

• Expansion joints in concrete structures
• Perimeter sealing around windows and doors
• Roof and gutter sealing
• Automotive body sealing and panel bonding
• Marine applications (above waterline)
• Industrial equipment sealing

Storage and Handling

Polyurethane sealants should be stored in their original containers at temperatures between 40°F and 80°F (4°C and 27°C). Keep containers tightly sealed when not in use to prevent skinning. Under proper storage conditions, unopened tubes typically have a shelf life of 12 months from manufacture date.

Polyurethane Sealants FAQ

Q: Are polyurethane sealants suitable for underwater applications?
A: While polyurethane sealants offer excellent moisture resistance, they're generally not recommended for continuous underwater immersion. For underwater applications, specialized marine-grade polyurethane sealants or polysulfide sealants would be more appropriate. Our standard polyurethane sealants work well for marine applications above the waterline, such as deck sealing or hull-to-deck joints.

Safety Information

When working with polyurethane sealants, wear appropriate personal protective equipment including gloves and eye protection. Use in well-ventilated areas, as uncured material may release small amounts of isocyanate. If skin contact occurs, wash with soap and water. For eye contact, flush immediately with plenty of water and seek medical attention.