Adheseal PU25

Adheseal PU25 FC is a single-component, moisture-curing polyurethane construction sealant designed for a wide range of applications. It is tough, durable, mould resistant, and boasts good chemical resistance, making it a reliable choice for various sealing and bonding needs in the construction industry.

Key Features

• Highly flexible
• Fast curing
• Paintable
• Tear resistant
• Excellent adhesion to most common building materials
• Anti-fungal
• Tested to AS1530.3

Uses

• Perimeter sealing of windows and curtain walls
• Masonry joints and expansion joints in precast/tilt-up panels
• Tile joints in walls and floors
• Metal cladding
• Pavement joints, car parks, driveways, and ducting systems
• General construction sealant
• Adhesive for lightweight components

Suitable Substrates

• Curtain walls
• Masonry
• Metal (except lead and copper)
• Timber
• Plastics
• Stone
• Painted surfaces
• Rubber
• Fibreglass
• Porcelain

For a more comprehensive list, see the Primer Selection Chart.

Benefits

• Highly flexible for accommodating joint movement
• Fast curing for reduced downtime
• Paintable for a seamless finish
• Tear resistant for long-lasting performance
• Excellent adhesion to various building materials for a reliable seal
• Anti-fungal properties for resistance to mould and mildew growth

Application Guide

1. Prepare the joint by ensuring substrates are sound, clean, and free of contamination. If necessary, clean with Adheseal cleaning solvent.
2. Priming is not usually required, but adhesion testing is recommended for uncertain surfaces. If priming is needed, use the appropriate primer and let it dry (priming floor joints is highly recommended).
3. Use Adhefoam open cell backer rod where needed. Closed cell backer rod can also be used, but avoid damaging the outer skin to prevent gas bubbles in the sealant.
4. If the joint is too shallow for backer rod, use bond breaker tape to prevent three-sided adhesion.
5. Fill the prepared joint completely, avoiding air entrapment. Tool immediately before the sealant skins. Tooling time is at least 10 minutes, depending on temperature and humidity.

Additional Information

Additional Product Downloads:

• Download TDS
• Download SDS