Contite is a clear sealing and waterproofing subsurface membrane which is solvent free, non toxic, odourless and user friendly. It is a spray applied colloidal liquid that penetrates the concrete’s surface and reacts with the cement paste matrix to form an insoluble gel sealing pores, capillaries and cracks creating a below surface barrier against water and water borne salts ingress. As long as water is present Contite remains active and will seal hairline cracks both present and future. Contite allows the passage of water vapour from the inside of the structure the concrete breathes) whilst waterproofing/sealing surface against sea water, aggressive ground waters, waste water and certain chemical solutions.

USES & ADVANTAGES
Contite can be used to protect various concrete structures including marine and coastal structures, water storage tanks, highways, runways, roofs, decks, bridges, cut & cover tunnels, silos, car parks, swimming pools, precast panels, pipes, etc. Contite is a completely inorganic water-soluble compound. Unlike solvent based, membrane forming sealers Contite is environmentally friendly. Since Contite penetrates into the concrete, it won’t scratch, peel or damage.
Advantages include:
• Penetrates concrete up to 35 mm. depending on porosity.
• Reduces porosity & permeability.
• 100% Trafficable. Slip resistance improved.
• Reduces Chloride & sulphate penetration by up to 90%.
• Prevents concrete cancer/corrosion.
• Improves concrete durability.
• UV resistant no topping or protection required.Heat reflective membranes may be applied over the top.
• Cannot be damaged, no debond as subsurface membrane.
• Non toxic, odorless, safe for potable water tanks.
• Fast tracks projects.
• Remains active for life of concrete.
• Overlays of asphalt do not delaminate Ballast will not damage system.
• No protection boards required when backfilling.
• Hairline cracks that may develop reseal on contact with water (self healing).
• Can use with concrete containing PFA, GBFS, or Silica fume.
• Withstands thermal stresses.
• Increases useful life of structure.
• Provides additional resistance to dilute acid & alkali attack.
• Increases concrete’s hardness.
• Very easy to apply and cannot be damage during construction.

• It is desireable to apply Contite at least 2 weeks after pouring concrete, 4 weeks is recommended. It may be applied at any later time. It is specially effective on old concrete.

• Contite may be applied to concrete immediately after forms are stripped acting as a curing compound and sealing material. Performance is not as effective as when applied after 2 weeks. A second treatment is recommended 28 days later.

• Contite may be applied to concrete treated with other compounds providing, these are removed properly, however, oils or paints may revent penetration.

• Existing cracks up to 2 mm. may be sealed by the use of calcium acetate and Contite flooded on the crack.

Before any concrete is treated the area must be thoroughly cleaned. The surface should be first swept with a broom to remove loose dirt. Then wet and scrub with soap or cleaning compound wash off and ensure clean. Allow concrete to dry thoroughly for at least 24 hours depending on humidity before applying Contite.
Contite can be applied by spray, brush and roller applications. A back pack spray will achieve 100 - 150 m² per hour. Eye protection should be used when spraying.

Contite should be flooded onto the concrete surface. If applied by brush or roller the product must be flooded on first. For vertical surfaces spray equipment is only appropriate. Agitate material in drum before application. Apply only to concrete which is dry to touch (no damp patches).

If it rains before Contite has dried reapplication is required. Sealing of joints etc should be carried out before application.

If swallowed increase liquid intake for 24 hours. Consult a doctor. Eye contact should be avoided by the use of eye protection if contact is made flush with large amounts of water continue for several hours. Where in contact with skin remove with water. Avoid direct contact with eyes at all times. In enclosed environment use breathing apparatus.