PU15 Polyurethane Sealant 600ml

PU15BL/SSG

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Adheseal PU-15 is a durable and highly flexible single-component moisture curing polyurethane construction sealant. It offers excellent adhesion to most common building materials and exhibits good chemical resistance. This low modulus elastomeric sealant is designed to provide reliable sealing for a wide range of applications.

Applications

Adheseal PU-15 is suitable for the following applications:

  • Perimeter sealing of windows and curtain walls
  • Masonry joints
  • Expansion joints in precast and tilt-up panels
  • Tile joints in walls and floors
  • Metal cladding
  • General construction sealant
  • Adhesive for lightweight components

Advantages

  • Highly flexible, accommodating joint movement
  • Fast curing for efficient application
  • Paintable with most commonly available paints
  • Tear-resistant formulation for enhanced durability
  • Excellent adhesion to most common building materials

Joint Preparation

Prior to application, ensure that the substrates are sound, clean, and free from contamination. If necessary, clean with Adheseal cleaning solvent.

Priming

Priming is generally not required for most substrates. However, for suspect surfaces, it is recommended to perform adhesion testing. When priming is necessary, apply the correct primer and allow it to dry. It is highly recommended to prime floor joints. Refer to the Primer Selection Chart for guidance.

Backer Rod

Where required, use Adhefoam open-cell backer rod. Closed-cell backer rod is also suitable, but be cautious not to damage the outer skin of the rod, as it can cause gassing (bubbles) in the sealant. In cases where the depth of the joint does not allow for backer rod, a bond breaker tape is required to prevent three-sided adhesion.

Application

Fill the prepared joint completely, taking care not to entrap air, as entrapped air may cause bubbles in the sealant. Dry tool immediately before the sealant skins. The tooling time is a minimum of 10 minutes, depending on temperature and humidity.

Limitations

Adheseal PU-15 is not suitable for long-term water immersion or internal swimming pool applications.

Colours

The available colours for Adheseal PU-15 are Concrete Grey, Black, and White. Other colours are available in batch quantities with extended lead times.

Painting

Adheseal PU-15 is paintable with most commonly available paints. However, it is crucial to ensure that the sealant is fully cured before applying paint. Failure to do so can result in retarding the curing of the PU sealant and the paint topcoat, resulting in a tacky surface.

Physical Properties:

  • Type of product: Polyurethane
  • Curing system: Moisture
  • Cure Time: 2mm / 24 hrs
  • Density (specific gravity): 1.15
  • Shore A Hardness: 15
  • Elongation at break: +/- 25%
  • Application temperature: +5°C to +40°C
  • Storage: Cool, dry between 10ºC and 35ºC
  • Service Temp: -30ºC to +80ºC
  • Tack Free Time: 4hrs @ 23ºC & 60% RH
  • VOC: 64gm/lt (California South coast air quality management rule 1168)
  • Modulus Elongation: 0.2 MPa @ 100% according to ISO 8339
  • Shelf life: 12 months in original packaging
  • Clean up: Uncured material can be removed using industrial strength solvent such as Xylol or mineral turps
  • Resistance to UV Radiation: GOOD
  • Test certificates: Meets Spec. SNJF Class 1 Elastomeric
  • Chemical Resistance: Excellent to water, detergent solutions, moderate diluted acids and alkalis, petrol and oil for short periods

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