SikaHyflex-250 Facade - Elastic polyurethane sealant - Sika

SikaHyflex-250 Facade - Elastic polyurethane sealant - Sika

SikaHyflex-250 Facade is a single-component, moisture -curing, low-modulus elastic joint sealant for concrete , masonry and exterior insulation systems based on plasters.

Features

• Very good resistance to weathering and ageing.
• +100% / -50% motion readiness factor (ASTM C719).
• Set without the formation of bubbles.
• Low stress for the support.
• Easy to smooth, very good applicability.
• Very good adhesion on many supports.
• Solvent-free and odorless.
• Very low emissions

Application areas

SikaHyflex-250 Facade is developed for elastic jointing and sealing of movement and connection joints in the building envelope.
Thanks to its low modulus of elasticity, SikaHyflex-250 Facade is also suitable for use with facade insulation systems.

Application

1. SikaHyflex-250 Facade is supplied ready to use.
2. After adequate preparation of the substrate, insert the backer rod to the required depth and apply the primer if necessary.
3. Insert the pouch into the sealant gun and extrude SikaHyflex-250 Facade into the joint making full contact with the lips of the joint and avoiding entrapment of air bubbles.
4. SikaHyflex-250 Facade must be applied firmly against the joint lips to ensure good adhesion.
5. Use masking tape where precise or exceptionally clean grout lines are required.
6. This tape must be removed before the skin forms.
7. Use a compatible smoothing agent (eg Sika Smoothing Solution N) to smooth the joint surfaces.
8. Do not use products containing solvents!

Approximate consumption

Conditioning

300 ml cartridge and 600 ml pouches:

• White
• Black
• Brown
• Chestnut
• Beige
• beige floor
• Dark beige
• Concrete Gray
• Light gray
• Basalt Gray
• Medium gray
• Dark gray
• rustic red