Everbuild Tecnic Silicone 825 extended informationUsagePerimeter pointing internally and externally around PVCu /wood and powder coated aluminium.Sealing and as an adhesive onto PVCu, plastic trims and components. Sealing soft metals such as lead, copper and zinc. Weather sealing and joint sealing to pre-formed panels and curtain walling, glazing sealing and draught proofing. Glass to glass and glass to aluminium sealing. Parapet and roof weather sealing applications.Ideal for precast concrete and masonry products, including brick, natural stone and terracotta.Suitable as an expansion joint sealant.Bedding and sealing of Insulated Glass units.Shrinkage ISO10563Tensile Modulus at 100% Elongation ISO 8339 23°C0.25—0.3 MPaTensile Adhesion Strength at Break0.5 MPaCompressive Modulus 100% ISO 114320.35 MPaMovement FactorsMaximum Compression 35 % Maximum Elongation 100 % (for a 20 mm wide joint min 13 mm max 40 mmApprovals / StandardsCertified to ISO11600 F25LM and G25LM.UKCA and CE marked under EN15651 for cold climate, façade, glazing and sanitary applications.ASTM C719 Class 35Everbuild Tecnic Silicone 825 product informationChemical BaseAlcoxy siliconePackaging380 ml cartridge 600 ml foil packShelf Life12 months from date of manufacture.Storage ConditionsStore in original unopened containers between 5 °C and 25 °C. Storage outside these parameters may dramatically reduce shelf life.ColourWhite, Black, Mid Grey, Dark Grey, Brick Red, Brown, Buff, Beige, Anthracite, Dark Anthracite RAL 7016, Magnolia, Portland Stone, Limestone WhiteDensityColours: 1.33 - 1.37 g/cm3Shore A Hardness22-32Elongation at break200 % (ISO 8339, 23 °C)Movement Capability(ASTM C719) ±35 % (ISO11600) ±25 %Elastic Recovery70 % (ISO 7389)Thermal Conductivity0.10983 W/mKService Temperature-50 °C to 150 °CJoint DesignMaximum joint width 50 mm, max depth 50 % of joint width Joint widths are calculated as in BS6213: Width=(M x 100)/F M Where M = movement and F = movement accommodation Factor For maximum movement accommodation, it is recommended that: 1. The sealant joint depth should be no less than 5 mm. 2. Joint depth should be 5 mm for joints up to 10 mm wide. 3. Joints above 10 mm in width should be half the width in depth up to 20 mm and minimum 10 mm for wider joints. Joint depth may be adjusted to the correct size using EVERBUILD JOINT BACKER ROD.Yield3 linear metres 9 x 9 mm fillet joint (380 ml cartridge)Ambient Air Temperature 5 °C to 40 °CCuring Timemm/1 day approx 2 mm/3 days approx 6 mm/7 days approx 9Skin Time30-45 minutesLimitationsDo not use in conjunction with bitumen asphalt, neoprene and certain organic elastomers.Do not use in the manufacture of aquariums.Do not use on substrates that bleed oil, solvents or plasticisers.Non overpaintable.Not recommended for use as a mirror adhesive.Everbuild Tecnic Silicone 825 Application InstructionsPrimerEverbuild Tecnic® Silicone 825 does not require a primer on most common surfaces, although adhesion tests are recommended prior to full scale application. If the joint is likely to be immersed or if adhesion is poor (especially on porous surfaces) use SIKA PRIMER 3N. To improve adhesion (if required) to non-porous surfaces, prime with Sika Aktivator 205.Substrate PreparationSurfaces must be clean, dry and free from dust, grease and other contaminants. Remove dust with compressed air. Degrease by using a solvent soaked pad, following by wiping with a clean cloth. Following cleaning procedure and materials are recommended:GlassDegrease with alcohol or MEKAluminium, light alloys and stainless steelDegrease with alcohol or MEKOther MetalsLightly abrade then de- grease as aboveWoodLightly abrade surface then remove dustPlasticsDegrease using an agent recommended by plastics manufacturerConcrete and other alkaline surfacesBrush and remove dustPolyester Powder Coated Aluminium (PPCA)Sika® Cleaner P and Sika® Aktivator-205Everbuild Tecnic Silicone 825 APPLICATION METHOD / TOOLSWe recommend following Sika Method Statement; Facade Joint Sealing for good working practiceCLEANING OF TOOLSUncured sealant – white spirit. Cured sealant – mechanically Categories: All Products, Building Supplies Pallet Deals, Preparation, Silicone
