
The Pro PU91 Polyurethane Sealant – High Strength Construction Bond is a professional-grade sealing and bonding solution designed for demanding building, repair, and construction applications. It delivers exceptional strength, flexibility, and durability, making it ideal for sealing and bonding joints that are exposed to movement, vibration, and harsh environmental conditions.
PU91 forms a tough yet elastic seal that can withstand expansion, contraction, and heavy loads without cracking or losing adhesion. Unlike standard silicones, polyurethane sealant provides much higher mechanical strength, allowing it to be used not only as a sealant but also as a powerful adhesive.
It bonds strongly to a wide range of materials including concrete, brick, stone, metal, timber, painted surfaces, and many plastics. This makes it suitable for construction joints, expansion gaps, floor joints, panel bonding, roof repairs, and exterior sealing.
Once cured, PU91 becomes waterproof, weather-resistant, and paintable, making it perfect for both indoor and outdoor use. It resists UV, moisture, and ageing, ensuring long-term performance even in challenging environments such as driveways, industrial buildings, and structural joints.
Easy to apply with a standard sealant gun, it allows smooth application and professional results, whether you are sealing, bonding, or filling gaps.
This sealant is ideal for builders, contractors, fabricators, and maintenance teams who need a strong, flexible, long-lasting construction sealant.
Standard sealants fail in high-movement or high-stress joints. PU91 provides a durable, flexible bond that stays sealed under pressure.
Low-cost sealants crack, shrink, or lose grip. PU91 offers superior adhesion, strength, and weather resistance, making it reliable for professional construction work.
Can PU91 be used as an adhesive?
Yes, it is strong enough for both sealing and bonding applications.
Is it suitable for outdoor use?
Yes, it is waterproof and weather-resistant.
Can it be painted over?
Yes, once cured it can be painted.
What surfaces does it bond to?
It adheres to concrete, metal, wood, stone, and many building materials
The Pro PU91 Polyurethane Sealant – High Strength Construction Bond is a professional-grade sealing and bonding solution designed for demanding building, repair, and construction applications. It delivers exceptional strength, flexibility, and durability, making it ideal for sealing and bonding joints that are exposed to movement, vibration, and harsh environmental conditions.
PU91 forms a tough yet elastic seal that can withstand expansion, contraction, and heavy loads without cracking or losing adhesion. Unlike standard silicones, polyurethane sealant provides much higher mechanical strength, allowing it to be used not only as a sealant but also as a powerful adhesive.
It bonds strongly to a wide range of materials including concrete, brick, stone, metal, timber, painted surfaces, and many plastics. This makes it suitable for construction joints, expansion gaps, floor joints, panel bonding, roof repairs, and exterior sealing.
Once cured, PU91 becomes waterproof, weather-resistant, and paintable, making it perfect for both indoor and outdoor use. It resists UV, moisture, and ageing, ensuring long-term performance even in challenging environments such as driveways, industrial buildings, and structural joints.
Easy to apply with a standard sealant gun, it allows smooth application and professional results, whether you are sealing, bonding, or filling gaps.
This sealant is ideal for builders, contractors, fabricators, and maintenance teams who need a strong, flexible, long-lasting construction sealant.
Standard sealants fail in high-movement or high-stress joints. PU91 provides a durable, flexible bond that stays sealed under pressure.
Low-cost sealants crack, shrink, or lose grip. PU91 offers superior adhesion, strength, and weather resistance, making it reliable for professional construction work.
Can PU91 be used as an adhesive?
Yes, it is strong enough for both sealing and bonding applications.
Is it suitable for outdoor use?
Yes, it is waterproof and weather-resistant.
Can it be painted over?
Yes, once cured it can be painted.
What surfaces does it bond to?
It adheres to concrete, metal, wood, stone, and many building materials