S2 High Modulus Mould Resistant Acetoxy Silicone Sealant (12 tubes per box)

SP7920S2 is a high modulus acetoxy silicone is one-component, elastic sealant curing under the influence of humidity from the air, intended for sealing and grouting joints and to protect against moisture.

Benefits:

• Excellent resistance to mould and fungus
• Good adhesion to many smooth building materials
• High resistance to UV radiation

Applications:

• Sealing glass in display cabinets, marks, cable ducts
• Protection of polyurethane foams against UV radiation
• Sealing baths, hand basins, showers, sinks and other sanitary facilities and other water supply equipment
• Sealing of ceramic tiles
• Small home repairs
• Sealing vertical dilatation joints

Price is based on 12 tubes per box.

Specifications:

• EN 15651-1:2012 F-EXT-INT 12,5E
• EN 15651-3:2012 S, S1

Surface Preparation: 

1. Bonding surfaces must be clean, dry (not frosted) free of dust, rust, old loose material, oil, grease, paint and other dirt which reduces the adhesion of the sealant.
2. Surfaces best degrease with acetone or ethanol (glass, glaze, metal) or detergent (synthetic materials). 
3. To avoid dirtiness around the gap and to maintain equal line use adhesive tapes which should be removed immediately after finishing sealing.
4. Sealant does not require using primer on most surfaces but on some specific surfaces may have to use it to improve adhesion. 
5. Joint width should be as to be able to carry movement in range calculated for sealant in question (movement accommodation).
6. The sealant bead should not be wider than 25 mm and the minimum joint width should be 6 mm to allow in the construction field proper application and tooling of sealant.
7. The ideal ratio of joint width : depth is 2 : 1. 
8. For proper design deep joints should be filled with back-up rod. 
9. In movable joints tripartite sealant adhesion to the surface should be avoided because it can cause its damage. For this purpose if depth of the slots does not allow introduction of polyurethane foam, use dilatation tape or back-up rod. Using foam or tape causes bipartite sealant adhesion and allows proper work with the joint. 
10. If joints are too shallow to allow backing material to be used, we recommend use of adhesive tape. This acts as a back-up rod to prevent seal in forming of three-sided adhesion.