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Polyurethane Sealants

One component Low Modulus Polyurethane Sealants

  • UV Resistant
  • Excellent Adhesion and Flexible
  • No sagging – Thixotropic
  • Paintable
PU polyurethane sealant cartridge concrete joint sealing New Zealand

Products Overview

PU Sealants are one-component, moisture-curing polyurethane sealants designed for sealing joints, cracks, and gaps in demanding construction environments. With a low modulus and high flexibility, they accommodate joint movement exceptionally well, forming a durable and weatherproof seal after curing.

These multipurpose sealants are ideal for both interior and exterior use, including expansion joints in buildings, vertical and horizontal joints between precast concrete panels, timber, and metal structures. PU Sealants are commonly used for waterproofing in structural joints and offer strong adhesion to a wide range of building materials.

Find out how you can get PU Sealant in Private Label

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Recommended Uses

  • For expansion joints between pre-cast concrete panels.
  • Insitu concrete and render
  • Brickwork and block work
  • Expansion joints between many different construction materials.
  • Joints between prefabricated construction materials.

Advantages​

  • Paintable
  • Shore A 25-30
  • UV Resistant
  • No shrinkage
  • Excellent Adhesion
  • Resistant to chemicals
  • No sagging – Thixotropic

PU Sealant Packing

PU Sealant can be supplied in cartridges or sausages depending on the requirement.

600ml sausages | 310ml cartridges

Color: Grey, White, Black

Media & Downloads​

Frequently Asked Questions about Polyurethane Sealants

What is a PU Sealant?

PU (Polyurethane) Sealant is a flexible, moisture-curing sealant used for sealing and waterproofing joints, cracks, and gaps in construction. It provides strong adhesion and long-lasting durability in both interior and exterior applications.

Where are PU Sealants commonly used?

PU Sealants are widely used in construction joints, precast panel joints, expansion joints, flooring, and facade sealing. They’re suitable for use with concrete, metal, timber, brick, and other porous or non-porous materials.

Can PU Sealant be painted over?

Yes, PU Sealants are paintable after curing. For best results, use flexible paints and always test compatibility before application.

Is priming required before applying PU Sealant?

PU Sealants have excellent adhesion to most substrates. However, priming may be recommended for certain surfaces or high-movement joints to ensure optimal bonding. Refer to the product’s technical data sheet (TDS) for surface preparation guidelines.

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