AD-TEK AR is hydrophobic pore-blocking admixture for watertight concrete. AD-TEK AR is designed to reduce the rate of transmission of moisture and water-soluble salts (chlorides, sulphates etc.) through concrete. AD-TEK AR is a chloride free organic admixture supplied in a fine powder form. It does not contain any chemicals that might cause undesirable significant side effects when used in conjunction with other typically used concrete admixtures. AD-TEK AR reacts with the cement hydration products forming a hydrophobic film on pores in concrete, reducing capillary suction and minimising absorption and penetration of water, and preventing the ingress of potentially deleterious soluble materials, resulting in concrete with enhanced durability. AD-TEK AR is classified by AS 1478.1-200 as a Permeability-Reducing Admixture. When AD-TEK AR was tested in comparison with similar competitor products, its ability to improve water tightness in concrete was at least equal to competitors’ products. Unlike its competitor products, ADTEK-AR does not possess a strong ammonia smell.

Siloseal is a water-based silicone protective sealer, which penetrates deeply into the substrate to produce a hydrophobic barrier with. This treatment significantly reduces the absorption of water and reduces the migration of salts but still allows the passage of water vapour. Siloseal chemically bonds to mineral surfaces forming a hydrophobic barrier. The hydrophobic barrier prevents the passage of salts through stone, concrete or bricks and can be used either alone or as a primer coat for other paints. Discolouration of the substrate is uncommon but a test area prior to application is recommended.