Water Repellent (Silicone)

Technical Data Sheet

1.  DESCRIPTION

Antel Silicone Water Repellent is a highly effective waterproofing liquid based on a fully active 5% silicone.  Its penetrative powers enable it to line the pores of the surface so that unsurpassed water repellent properties are obtained.  In addition, the ingress of dirt laden moisture is prevented, keeping the structure or building cleaner and dryer and therefore minimising the risk of face spalling through the action of frost.   The water barrier supplied by the repellent also aids insulation.  Untreated areas that are saturated with water have a very high thermal conductivity.  This not only results in general heat loss, but generates an extra cooling effect by producing vapour which surrounds the building.

2.  USES

Antel Silicone Water Repellent is for use on external vertical surfaces and can be applied to all types of masonry including brick, mortar, concrete, natural stone, asbestos cement, limestone and gypsum plaster.  It is completely transparent when dry and is impossible to detect unless comparison is made with non treated areas during wet weather.

Antel Silicone Water Repellent is not effective in open textured surfaces such as breeze blocks.

3.  PACKAGING

Available in 5 litre, 25 litre and 200 litre containers.

4.  COVERAGE

Coverage rate depends entirely on the porosity and type of surface to which applied.  An approximate rate is

35 m² per 5 litres.

Life expectance is in the order of 10 years.

5.  HEALTH & SAFETY

Flammable with a flash point not below 40°C.

Eye protection should be worn as the solution will cause severe irritation.  May also  prove irritable to certain skin types, and will cause irritation if inhaled or ingested.  If in contact with eyes, flush with cold water for at least 15 minutes and seek medical attention.

Handling:  Avoid contact with the eyes and skin.  Use of PVC gloves, goggles and protective clothing is recommended.

Storage:    Store in cool dry conditions in original containers. Protect from freezing. Keep out of reach of children.

6.  INSTRUCTIONS FOR USE

6.1 PREPARATION OF SUBSTRATE.

The surface must be dry.  The surface should be brushed down to remove atmospheric dirt, efflorescence and any foreign matter.   If required plain water can be used in conjunction with this brushing but detergent must not be used.  Unsound surfaces including joints and cracks must be made good.

6.2 APPLICATION.

The solution should be used as supplied and never diluted in any way.

Application is normally carried out using pneumatic spray apparatus but small areas can be adequately treated using a large paint brush.  If a spray gun is used avoid excess pressure and consequential heavy misting.  Care should be taken not to inhale the vapour.  Wipe off any splashes which may fall on glass etc. as these may be difficult to remove when dry.  After a minimum of 48 hours the treated surface may be decorated with oil or emulsion based paints.   Cement paints should be used prior to the application.

6.3 CLEANING TOOLS.

Spray equipment or brushes should be cleaned with White Spirit as soon as possible after use.