{"product_id":"wienerberger-red-class-b-engineering-solid-engineering-brick-pack-of-400","title":"Wienerberger Red Class B Engineering Solid Engineering Brick Pack of 400","description":"\u003ch3\u003eWienerberger Red Class B Engineering Solid Brick – Pack of 400\u003c\/h3\u003e\n\nThe Wienerberger Red Class B Engineering Solid Brick is designed for structural and performance-driven applications where durability and strength are essential. Unlike facing bricks, engineering bricks prioritise technical performance over aesthetics, making them ideal for groundworks, retaining walls, sewers, and damp-proof courses.\n\nThis brick offers a strong compressive strength of ? 75 N\/mm² and low water absorption of ? 7%, ensuring reliability in demanding conditions. Its red colour provides a more traditional appearance, while its frost resistance (F2 rating) makes it suitable for external and below-ground applications.\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSize:\u003c\/b\u003e215mm × 102.5mm × 65mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColour:\u003c\/b\u003eRed\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTexture:\u003c\/b\u003eSmooth, Solid Engineering Brick\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWater Absorption:\u003c\/b\u003e? 7%\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDurability:\u003c\/b\u003eF2\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCompressive Strength:\u003c\/b\u003e? 75 N\/mm²\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePack Quantity:\u003c\/b\u003e400\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003eClass B Engineering Brick\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eActive Soluble Salts:\u003c\/b\u003eS2\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStandards Compliance:\u003c\/b\u003eBS EN 771-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDescription \u0026amp; Usage Notes\u003c\/h3\u003e Manufactured for performance, this Class B engineering brick provides excellent strength and water resistance. It is suitable for structural uses such as load-bearing walls, manholes, retaining walls, and damp-proof courses.\n\nWhile it can be used above ground, its appearance may vary as aesthetics are not its main purpose. If visual finish is critical, a facing brick should be considered.\n\nFor long-term durability, install with appropriate detailing: use suitable mortar, ensure proper drainage, and allow for expansion and movement where required. Always follow best practice for cavity wall or structural applications.\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e \u003ch4\u003eWhat makes this a Class B engineering brick?\u003c\/h4\u003e Class B engineering bricks are defined by compressive strength of ? 75 N\/mm² and water absorption of ? 7%. They are robust and reliable for most structural uses. \u003ch4\u003eCan Class B engineering bricks be used underground?\u003c\/h4\u003e Yes — their durability and low absorption make them suitable for below-ground use, including foundations, manholes, and retaining structures. \u003ch4\u003eDo these bricks have a consistent appearance?\u003c\/h4\u003e Not always. Engineering bricks are specified for performance, so colour and surface finish may vary. For decorative work, facing bricks are better suited.\u003cbr\u003e\u003cp\u003eCheck out our full range of \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/building-supplies\"\u003ebuilding supplies\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/bricks-blocks\"\u003ebricks \u0026amp; blocks\u003c\/a\u003e available online.\u003c\/p\u003e","brand":"Weinerberger","offers":[{"title":"Default Title","offer_id":51448301191510,"sku":"161930","price":611.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/wienerberger-red-class-b-engineering-solid-engineering-brick-pack-of-400-9201966.jpg?v=1772656836","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/wienerberger-red-class-b-engineering-solid-engineering-brick-pack-of-400","provider":"JJ Building Materials","version":"1.0","type":"link"}