Waterproofing Admixture for Sand and Cement Render, Screeds and Mortar

The original waterproofing additive for cement based mixes of concrete, render and screed. A real trade classic waterproofer. Unchanged over 100 years!

Sika 1 is an aqueous solution containing complex collodial silicates. In the presence of water these swell and block the capillaries and pores in the applied sand/cement renders, screeds and mortar to provide an effective barrier against the transmission of liquid water.

...¿Qué?

Oh sorry! Dilute with water and dose to the mix. Works by allowing a small amount of water to penetrate and cause swelling of the silicate molecules which, as they grow, block the pores and thus resist water under pressure.

Time tested and well known in the trade!

What's good about it?

• Proven for more than 100 years.
• Great for brick, concrete and stone substrates.
• Can be applied against live water infiltration.
• Wall render and screed application.
• Can be used internally and externally.
• Excellent resistance to backwater pressure.
• Excellent vapour resistance.
• Complies with Water Quality Regulations.
• Certified by the British Board of Agrément.
• Complies with Building regulations (England, Wales, Scotland and Northern Ireland).
• Suitable for contact with potable water.

How do I use this stuff?

1. Dilute with water.
2. Dose to the mix.

Get some Sika 1 Waterproofer now!