{"product_id":"everbuild-premium-450-builders-silicone-brown-300ml","title":"Everbuild Premium+ 450 Builders Silicone Brown 300ml","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eEverbuild Premium+ 450 Builders Silicone supplied in a 300ml cartridge is a low modulus, neutral cure silicone sealant engineered for general construction, perimeter, and façade applications. \u003cbr\u003e\u003cbr\u003eIt provides excellent adhesion to a wide range of building materials including glass, metal, wood, PVCu, and polycarbonate, forming a durable, flexible, and weather-resistant joint. The non-corrosive formulation ensures compatibility with sensitive metals such as copper, zinc, and lead, while maintaining long-term elasticity under movement conditions up to ±25%. \u003cbr\u003e\u003cbr\u003eIdeal for internal and external perimeter pointing, expansion joints, and panel sealing, it performs reliably in all building environments. \u003cbr\u003e\u003cbr\u003eThe brown colour offers a warm, complementary tone for use with timber, brick, and darker architectural finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeutral Cure Formulation\u003c\/strong\u003e: Non-corrosive chemistry suitable for use on metal, glass, and composite substrates without surface damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Modulus Flexibility\u003c\/strong\u003e: Accommodates joint movement up to ±25% for reliable long-term sealing in dynamic joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Adhesion Strength\u003c\/strong\u003e: Bonds securely to glass, metals, plastics, wood, and painted or coated surfaces without priming in most cases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather and UV Resistant\u003c\/strong\u003e: Maintains flexibility and appearance under long-term external exposure and temperature variations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaint Compatibility\u003c\/strong\u003e: Resistant to plasticiser migration, suitable for use with both water-based and solvent-based paints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrown Colour Finish\u003c\/strong\u003e: Provides a rich, natural joint line ideal for use with timber frames, brickwork, and brown-toned cladding systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerimeter Pointing\u003c\/strong\u003e: For sealing around PVCu, timber, and metal window and door frames, both internally and externally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpansion Joints\u003c\/strong\u003e: Suitable for general building joints requiring long-term flexibility and weather durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel and Façade Sealing\u003c\/strong\u003e: Used for sealing joints between pre-formed panels and building elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoof and Parapet Sealing\u003c\/strong\u003e: Ideal for waterproofing junctions and terminations on parapets, flashings, and roofing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlazing Applications\u003c\/strong\u003e: Suitable for glass-to-glass, glass-to-aluminium, and glazing repair work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal and Leadwork\u003c\/strong\u003e: For sealing joints in soft metals including lead, copper, and zinc without corrosion risk.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eInstallation Guidance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Preparation\u003c\/strong\u003e: Ensure surfaces are dry, clean, and free from dust, oil, or loose material prior to application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePriming\u003c\/strong\u003e: Generally not required; if adhesion is uncertain, test a small area before full use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Method\u003c\/strong\u003e: Apply using a standard sealant gun; cut nozzle to the joint width and tool within 10 minutes for a smooth finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoint Design\u003c\/strong\u003e: Depth should not exceed 50% of the joint width; use backer rod where necessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing\u003c\/strong\u003e: Smooth with a wetted spatula to ensure full joint contact and a neat appearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleaning\u003c\/strong\u003e: Remove uncured material with white spirit; cured material must be removed mechanically.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch2\u003eCompliance \u0026amp; Performance\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Type\u003c\/strong\u003e: Neutral cure, low modulus silicone rubber.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement Capability\u003c\/strong\u003e: ±25% for expansion and contraction tolerance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Resistance\u003c\/strong\u003e: Suitable for use in typical construction environments and exterior exposures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeathering Resistance\u003c\/strong\u003e: Excellent UV and moisture stability for long-term outdoor use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdhesion Performance\u003c\/strong\u003e: Bonds effectively to glass, wood, metals, PVCu, and composite materials.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Everbuild","offers":[{"title":"Brown","offer_id":53771414241391,"sku":"1003118","price":10.7,"currency_code":"GBP","in_stock":false},{"title":"Clear","offer_id":53771414274159,"sku":"1003119","price":10.7,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/9784\/4591\/files\/Everbuild_Premium_Plus_450_Builders_Silicone_300ml_-_Photo.jpg?v=1783758341","url":"https:\/\/supplyyard.co.uk\/products\/everbuild-premium-450-builders-silicone-brown-300ml","provider":"Supply Yard","version":"1.0","type":"link"}