Penetrating silane and siloxane water repellent systems

Sika Impregnation H is a penetrating silane-siloxane water repellent for concrete and masonry facades in the Sika professional remedial product range. Applied by brush, roller or low-pressure spray to the dry facade surface, it penetrates deep into the substrate pore structure and reacts with the substrate minerals to form a hydrophobic lining within the pores — repelling liquid water ingress while remaining vapour permeable (breathable). It significantly reduces chloride ion penetration and carbonation rate — making it particularly suitable for coastal concrete facades where chloride-induced corrosion of reinforcement is a design consideration. Sika Impregnation H is colourless and does not alter the visual appearance of the treated surface. Available through Sika's national trade and contractor supply network. Confirm current product name, application rate, substrate requirements, and surface dryness conditions from the current Sika Impregnation H TDS before specifying.

Mapei Antipluviol W is a siloxane penetrating water repellent impregnation for concrete, masonry, and render facades in the Mapei professional product range. Applied to dry substrate surfaces, it penetrates into the pore structure and reacts to form a hydrophobic surface within the pores, reducing liquid water absorption while remaining breathable. It reduces chloride ion penetration and slows carbonation on concrete facades — particularly relevant for buildings in coastal environments where chloride ingress is a corrosion risk factor. Antipluviol W is colourless and does not change the visual appearance of the treated facade. It can be used on its own as a protective impregnation or as a pre-treatment prior to protective coating. Available through Mapei's national trade and contractor supply network. Confirm current product name, application method, coverage, and substrate requirements from the current Mapei Antipluviol W TDS before specifying.

Parchem Nitocote Sealer 30 is a silane penetrating water repellent sealer for concrete and masonry facades in the Parchem/Fosroc professional construction products range. It penetrates deep into the substrate pore structure and reacts to form a hydrophobic lining within the pores — significantly reducing water absorption and chloride ion penetration while remaining breathable. It is primarily specified for concrete and masonry facades on commercial, multi-storey, and strata buildings in coastal and high-humidity environments where chloride-induced reinforcement corrosion is a long-term durability consideration. Colourless — does not change the visual appearance of the treated surface. Parchem has strong national distribution through trade supply to the remedial building contractor market. Confirm current product name, application method, coverage, and substrate requirements from the current Parchem Nitocote Sealer 30 TDS before specifying.

Dry-Treat STAIN-PROOF Original is a premium fluoropolymer impregnating sealer for concrete, masonry, stone, and grout surfaces. Unlike silane-siloxane products which are organosilicon-based, STAIN-PROOF Original uses a fluoropolymer chemistry that provides both water and oil repellency deep within the substrate — making it particularly effective for surfaces exposed to both water ingress and oil or grease staining. It is breathable, colourless, and does not alter the visual appearance of the treated surface. Dry-Treat is an Australian company with a specialist focus on penetrating sealers and impregnating treatments for stone, concrete, masonry, and grout in both building facade and paving applications. STAIN-PROOF Original is positioned as a premium, long-lasting product with an extended service life compared to standard silane-siloxane products. Available through Dry-Treat's national trade and tile/stone supply network. Confirm current product name, application method, and substrate suitability from the current Dry-Treat STAIN-PROOF TDS before specifying.

Dulux Aquashield Exterior Concrete Sealer is a penetrating water repellent sealer for concrete, render, and masonry surfaces in the Dulux exterior system. Applied to dry exterior surfaces, it penetrates into the substrate and forms a water-repellent treatment within the pore structure — reducing liquid water absorption while remaining vapour permeable. It can be used as a standalone water repellency treatment on concrete and render facades, or as a pre-coat preparation treatment before applying Dulux exterior coatings. Colourless — does not change the visual appearance of the treated surface. Dulux Aquashield is available through Dulux Trade Centres and trade retail channels nationally. Confirm current product name, application method, coverage rates, and substrate requirements from the current Dulux Aquashield product TDS before specifying. The Dulux Aquashield range includes products for different substrates — confirm the correct grade for concrete and render facade applications.

Ardex AR 990 is a silane-siloxane penetrating water repellent for concrete and masonry facades in the Ardex specialist remedial product range. Applied to dry facade surfaces, it penetrates into the substrate pore structure and reacts to form a hydrophobic lining within the pores — reducing water absorption and chloride ion penetration while remaining breathable and colourless. It is suitable for concrete, masonry, and render facades on residential and commercial strata buildings where water repellency and anti-carbonation protection are required without altering the visual appearance of the facade. Ardex has a strong national distribution network through trade supply to the remedial building and waterproofing contractor market. Confirm current product name, application method, coverage, and substrate requirements from the current Ardex AR 990 product TDS and Ardex Australia technical before specifying.