Ardex ST Silicone Sealant 310ml

Description ARDEX ST Silicone Sealant is a neutral cure elastic silicone sealant that minimises the risk of discolouration in porous materials, making it suitable for use with most finishes including moisture sensitive natural stones. After curing, ARDEX ST Silicone is resistant to commonly used cleaners, disinfectants and UV exposure, and its antifungal properties inhibit the growth of fungi and moulds. It is easy to apply and smooth and, due to its high elasticity, it can accommodate movement of up to 20% of the applied width. It is available in Transparent and 13 colours designed to match the most popular the Ardex-Flex FS & Ardex-Flex FL range of grout colours: Brilliant White, Antique Ivory, Spring Jasmine, Natural Almond, Floating Driftwood, Dove Grey, Silver Shimmer, Ocean Grey, Slate Grey, Stormy Mist, Cast Iron, Innocent Black, Coffee Bean. Ardex ST Colour Chart ARDEX ST Silicone Sealant can be used for the sealing of movement, corner and connecting joints in internal and external locations including bathrooms, showers and living areas. It is suitable for use with most surface finishes including natural stones, and has excellent adhesion to glazed and unglazed tiles, enamel, glass, acrylic, anodised aluminium, plastics, laminated kitchen work boards, solvent free acrylic varnished surfaces and wood. Note: Apply ARDEX ST Silicone cautiously on natural stone, avoiding getting any silicone onto the tile surface. If this should happen, remove immediately and do not use detergents. Fresh spills can be removed with a thinner. After curing, it is only possible to remove the sealant by mechanical means if applied to a suitable substrate. Due to the variable nature of some natural stone and absorbent surfaces, we recommend that a test application is carried out before commencing work, or contact ARDEX Technical Support Team for further advice. ARDEX ST Silicone is waterproof and prevents water penetrating through the silicone joint. Where moisture sensitive backgrounds in wet areas are being tiled, ARDEX WPC Waterproof Coating should be used to prevent moisture ingress through tile grout joints. For further information, consult the ARDEX WPC Technical Datasheet or contact ARDEX Technical Support Team. ARDEX ST Silicone Sealant is not suitable for use in permanently submerged locations such as swimming pools. ARDEX ST Silicone should not be used on the following substrates: bitumen and bituminous materials, butyl, EPDM, rubber, polyethylene, neoprene, tar and Teflon. ARDEX ST Silicone does not adhere to polyethylene and Teflon. On the other substrates discoloration may occur. The surface of natural stones and open porous tiles should be protected with masking tape to prevent the sealant entering pores in the surface which could lead to discolouration. ARDEX ST Silicone is suitable for corner and edge joints on floors, however it is not suitable for floors with high mechanical loads. ARDEX ST Silicone Sealant cannot be over painted and is not suitable for load bearing construction. On painted surfaces and plastic substrates, we recommend a trial application. Surface preparation: The joint edges should be clean, firm and free of dust, dirt, oil, grease and other barriers to adhesion. Joint edges in bathtubs and shower outlets should be cleaned and degreased with a suitable degreaser. Do not use any detergents. Deep joints should be prefilled with an appropriate foam backer rod. Bituminous, tar, oil or acrylic impregnated fillers should not be used. Application: Cut off the tip of the cartridge above the thread. Screw on the nozzle and cut it at an angle according to the required application thickness. Place the cartridge into a cartridge gun and apply the sealant firmly into the joint and against the backing, making sure all edges are completely covered and no air voids are formed. Before the silicone skins over (after approximately 5 minutes), smooth the surface with a suitable tool and remove any masking tape used. ARDEX ST Silicone Sealant should be applied at a substrate temperature between 5°C and 40°C. Note: The joint width should be determined so that the maximum movement the joint may experience is less than 20% of the joint width. Please observe the following required joint depths: Width | Depth Up to 10mm | As width, minimum 6mm 10mm | 8-10mm 15mm | 8-12mm 20mm | 10-14mm 25mm | 12-18mm Note: ARDEX ST Silicone can be applied in sections and adheres well to cured silicone, if dry and free of dust. Opened cartridges can be used over several days if the nozzle is closed with a suitable top. Any dry silicone in the nozzle should then be removed before re-use. Coverage: A 310ml cartridge of ARDEX ST Silicone will cover approximately: 8.6m at 6mm x 6mm thickness 3.1m at 10mm x 10mm thickness 3.9m at 10mm x 8mm thickness 1.7m at 15mm x 12mm thickness Cleaning: Although ARDEX ST Silicone Sealant contains fungicide to prevent mould, the general rules of cleaning should be applied and suitable cleaning agents used; dirt and soap residues can still provide an ideal background for fungi and mould to grow on. From time to time, the joints should be dried and cleaned with a suitable disinfecting agent. Note that the use of cleaning agents containing iodine may cause discolouration. Technical Data: According to ARDEX quality standards: Raw material base: Silicone, neutral curing system Component: 1 component Consistency: Smooth paste Specific weight Acc. DIN 52451t: approx. 1,0 g/cm3 Joint width: Up to 30 mm wall, up to 15 mm floor Movement accommodation. 20 % of joint width Application temperature: 5°C to 40°C Skin forming time: 5 minutes Temperature resistance: -40°C to 150°C Modulus: approx. 70 N/mm² (DIN EN 28339 Method A) Shore-A-hardness: approx. 30 Suitable for underfloor heating applications: Yes Packaging: Cartridges with 310ml net Product Datasheet Click here to view this product on the manufacturers website.