Polycarbonate Sealant AS-209

Description

ALSEAL Polycarbonate Sealant AS-209 is a one-component, 100% neutral cure silicone sealant specially formulated for polycarbonate bonding. It can bond well to the Polycarbonate even it uses anti-scratch coating for protection. It is also tested and will not cause discolouration to the standard polycarbonate material. It has excellent resistance to weathering, UV radiation, vibration, moisture, ozone, temperature extremes, airborne pollutants, and many cleaning detergents and solvents.

Features

• Excellent bonding to polycarbonate
• No discolouration to polycarbonate
• Permanently flexible
• Indoor and outdoor use

Applications

Polycarbonate Sealant AS-209 is special for bonding and sealing of polycarbonate and other plastic sheet materials in roofing and cladding applications. It will bond to form a strong weatherproof seal on most common building materials such as aluminium, galvanized and zinc-coated steel, painted surfaces, glass, brick, and concrete. It is suitable for both indoor and outdoor applications.

Usage Instructions

1. Surfaces must be clean, dry and free of dirt, grease, oil or water.
2. Surfaces should be cleaned with alcohol, M.E.K. or other suitable solvents. Soap or detergent and water treatments are not recommended.
3. For a neat finish, apply masking tape and remove it before sealant skins over.
4. Cut nozzle at 45° angle to the desired bead-width and apply to a substrate with a sealant application gun.
5. Tool the sealant within 10 minutes of extrusion before it skins. Tack-free in 20 minutes.
6. Uncured sealant can be cleaned up with mineral spirits.
7. Use approved backing material for joints over 10mm deep

Joint design

• The specified sealant bead size should be calculated to comply with the compression and extension capabilities of the sealant in relation to the anticipated joint width due to expansion and contraction.
• Generally, calculation of the width sealant bead should be computed on the basis of a maximum ±25 % movement capability
• Minimum bead size should not be less than 6 mm to accommodate movement.
• Sealant design joint width-to-depth ratio should be 2:1.

Clean up

• Wet sealants can be cleaned up with acetone or mineral spirits.
• Cured sealants can only be removed mechanically.

Learn more about Polycarbonate Sealant