{"product_id":"aluminium-cooping-junction-75mm","title":"2mm Aluminium Flat Coping – 90° T-Junction | 75mm External Leg","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhere a parapet wall joins another wall at a right angle from one side only, creating a T-shaped intersection, the coping needs to transition cleanly from two runs into three. A standard 90 degree corner only handles a change of direction. A T-junction handles a change of direction plus an additional wall coming in from the side. Without a properly formed T-junction piece, you are left trying to cut and join three coping sections on site, which creates multiple exposed joints, inconsistent angles, and a weak point where water will find its way through.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA factory formed aluminium coping T-junction provides a single, pre-formed piece that connects all three coping runs at the intersection. It is powder coated to match the coping lengths, uses the same concealed fix bracket system, and maintains a weathertight seal across the entire junction. On parapet walls across Chelmsford, Brentwood, Colchester and the wider South East, this is the fitting that keeps the coping system continuous at every T-shaped wall intersection.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 2mm aluminium flat coping T-junction from \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eOnline Metal Store Ltd\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e connects three coping runs at a T-shaped parapet wall intersection. The 75mm external leg (downstand) matches the standard leg dimension on the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-3m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eflat coping 3m lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eflat coping 1m lengths\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, keeping the profile consistent across the entire coping system. Available in multiple width options to match your wall thickness, custom fabricated at our Chelmsford, Essex workshop and powder coated in any RAL colour.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe T-junction is supplied with fixing brackets for the concealed fix installation. For standard changes of direction (where the wall turns 90 degrees), see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-corner-135\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e90° coping corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. For the end of a coping run, see the coping stopend range. Browse the full \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium copings collection\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for all lengths, corners, T-junctions and stopends.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eKey Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eConnects Three Coping Runs at One Point\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe T-junction is factory formed to connect the main coping run with a branch wall coming in from one side. This creates a clean, weathertight transition at the intersection without multiple site-cut joints. A 90 degree corner only handles two runs. The T-junction handles three.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003e75mm External Leg for Consistent Profile\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 75mm downstand matches the standard leg dimension across the flat coping range, including the 3m and 1m coping lengths. This keeps the coping line consistent at every fitting.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eConcealed Fix Bracket System\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe T-junction is supplied with fixing brackets that secure to the top of the wall. The coping clicks down onto the brackets with no visible screws or fixings on the finished surface. This maintains a clean architectural line at the junction.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003ePowder Coated in Any RAL Colour\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEvery T-junction is colour matched before dispatch, using the same RAL code as the coping lengths and corners for a consistent finish.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eUK Manufactured with Fast Turnaround\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFabricated at our workshop in Chelmsford, Essex alongside the coping lengths and other fittings.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMaterial: \u003c\/strong\u003e\u003cspan\u003e2mm aluminium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eType: \u003c\/strong\u003e\u003cspan\u003eFlat coping T-junction (tee piece)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eExternal Leg: \u003c\/strong\u003e\u003cspan\u003e75mm downstand with 10mm return\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eAvailable Widths: \u003c\/strong\u003e\u003cspan\u003eMultiple options to match wall thickness (select at checkout)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFinish: \u003c\/strong\u003e\u003cspan\u003ePolyester powder coated in any RAL colour\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFixing: \u003c\/strong\u003e\u003cspan\u003eConcealed bracket system (brackets supplied)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFire Classification: \u003c\/strong\u003e\u003cspan\u003eA2-s1,d0 under BS EN 13501-1\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eManufactured: \u003c\/strong\u003e\u003cspan\u003eChelmsford, Essex, United Kingdom\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eHow to Fit an Aluminium Coping T-Junction\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFix the supplied brackets to the top of the wall at the T-junction intersection using appropriate fixings into 18mm external grade plywood or directly into the masonry. Apply EPDM seal tape to the brackets. Click the T-junction piece down onto the brackets, ensuring it seats firmly and aligns with the coping runs on all three sides.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLeave a 2 to 3mm expansion gap between the T-junction and each adjoining coping length. The gaps allow for thermal movement while the EPDM tape maintains the weathertight seal. Ensure the waterproof membrane underneath is correctly detailed before fitting the coping. For a completed installation reference, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/blogs\/news\/how-to-install-aluminium-coping\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ehow to install aluminium coping guide\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eWhere Coping T-Junctions Are Used\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eParapet Wall Intersections\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe most common use is where a parapet wall on one section of roof meets a perpendicular parapet wall from an adjacent section, creating a T-shape when viewed from above. This occurs on flat roofed buildings with multiple bays, wings or roof levels across Chelmsford, Brentwood, Basildon and the South East.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eExtension Junctions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhere a flat roofed extension meets the main building parapet, the coping often needs to transition from the extension wall into the main wall, creating a T-junction at the meeting point.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCommercial Rooflines\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOn commercial buildings, retail units and office blocks with complex parapet geometries, T-junctions occur wherever a dividing wall or fire break wall meets the perimeter parapet.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eFrequently Asked Questions\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat is a coping T-junction used for?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eA coping T-junction connects three coping runs at a T-shaped wall intersection. It is used where one parapet wall meets another at a right angle from one side only, creating a T-shape when viewed from above. A standard 90 degree corner only handles two runs. The T-junction handles three.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhen do I need a T-junction instead of a corner?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eUse a T-junction where a wall joins another wall from one side only (T-shape). Use a \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-corner-135\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e90° corner\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e where the wall changes direction (L-shape). If you stand above and the walls form a T, it is a T-junction. If they form an L, it is a corner.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eWhat size coping T-junction do I need?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe coping width must match your wall thickness plus the 75mm downstand and 10mm return on each side. Measure the wall thickness and select the matching width option. The 75mm external leg is standard across the flat coping range.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eHow do you fit an aluminium coping T-junction?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eFix the supplied brackets to the wall top. Apply EPDM seal tape. Click the T-junction down onto the brackets. Leave a 2 to 3mm expansion gap between the T-junction and each adjoining coping length.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003eCan the coping T-junction be colour matched?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eYes. Powder coated in any RAL colour. Order in the same RAL code as your coping lengths and corners for a fully matched system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003e\u003cspan\u003ePart of a Complete Flat Coping System\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe T-junction is one fitting in the flat coping system:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-3m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eFlat Coping 3m Length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – main coping length\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/2mm-aluminium-coping-1m-75mm-leg\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eFlat Coping 1m Length\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – short coping length\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-cooping-junction-75mm\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eCoping T-Junction\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – this product\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/4mm-aluminium-coping-bracket\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eCoping Bracket\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e – concealed fixing bracket\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBrowse the full \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/aluminium-copings\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium copings collection\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e for all lengths, corners, T-junctions and stopends. The coping system works alongside \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/fascia-soffits\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003ealuminium fascia and soffits\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-roof-edge-drip-trim-3m\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003edrip trims\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e and the full \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/rainwater-goods\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003erainwater goods range\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e. For a completed project, see the \u003c\/span\u003e\u003ca href=\"https:\/\/onlinemetalstore.co.uk\/pages\/mellish-street-aluminium-coping-case-study-london\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eMellish Street coping case study\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eStandards and Compliance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe powder coat finish is applied in line with \u003ca href=\"https:\/\/www.bsigroup.com\/en-GB\/standards\/bs-en-12206-1\/\" target=\"_blank\" rel=\"noopener\"\u003eBS EN 12206-1\u003c\/a\u003e for powder organic coatings on aluminium. The coping system achieves a fire classification of A2-s1,d0 under BS EN 13501-1, making it non-combustible and suitable for buildings of any height.\u003c\/p\u003e","brand":"Online Metal Store Ltd","offers":[{"title":"185mm","offer_id":42314567614548,"sku":"AC2-T90-75-185","price":82.8,"currency_code":"GBP","in_stock":true},{"title":"210mm","offer_id":42314567647316,"sku":"AC2-T90-75-210","price":85.68,"currency_code":"GBP","in_stock":true},{"title":"235mm","offer_id":42314567680084,"sku":"AC2-T90-75-235","price":88.56,"currency_code":"GBP","in_stock":true},{"title":"260mm","offer_id":42314567712852,"sku":"AC2-T90-75-260","price":91.44,"currency_code":"GBP","in_stock":true},{"title":"285mm","offer_id":42314567745620,"sku":"AC2-T90-75-285","price":94.32,"currency_code":"GBP","in_stock":true},{"title":"310mm","offer_id":42314567778388,"sku":"AC2-T90-75-310","price":97.2,"currency_code":"GBP","in_stock":true},{"title":"335mm","offer_id":42314567811156,"sku":"AC2-T90-75-335","price":100.08,"currency_code":"GBP","in_stock":true},{"title":"360mm","offer_id":42314567843924,"sku":"AC2-T90-75-360","price":102.96,"currency_code":"GBP","in_stock":true},{"title":"385mm","offer_id":42314567876692,"sku":"AC2-T90-75-385","price":105.84,"currency_code":"GBP","in_stock":true},{"title":"410mm","offer_id":42314567909460,"sku":"AC2-T90-75-410","price":108.72,"currency_code":"GBP","in_stock":true},{"title":"435mm","offer_id":42314567942228,"sku":"AC2-T90-75-435","price":111.6,"currency_code":"GBP","in_stock":true},{"title":"460mm","offer_id":42314567974996,"sku":"AC2-T90-75-460","price":114.48,"currency_code":"GBP","in_stock":true},{"title":"485mm","offer_id":42314568007764,"sku":"AC2-T90-75-485","price":117.36,"currency_code":"GBP","in_stock":true},{"title":"510mm","offer_id":42314568040532,"sku":"AC2-T90-75-510","price":120.24,"currency_code":"GBP","in_stock":true},{"title":"535mm","offer_id":42314568073300,"sku":"AC2-T90-75-535","price":123.12,"currency_code":"GBP","in_stock":true},{"title":"560mm","offer_id":42314568106068,"sku":"AC2-T90-75-560","price":126.0,"currency_code":"GBP","in_stock":true},{"title":"585mm","offer_id":42314568138836,"sku":"AC2-T90-75-585","price":128.88,"currency_code":"GBP","in_stock":true},{"title":"610mm","offer_id":42314568171604,"sku":"AC2-T90-75-610","price":131.76,"currency_code":"GBP","in_stock":true},{"title":"635mm","offer_id":42314568204372,"sku":"AC2-T90-75-635","price":134.64,"currency_code":"GBP","in_stock":true},{"title":"660mm","offer_id":42314568237140,"sku":"AC2-T90-75-660","price":137.52,"currency_code":"GBP","in_stock":true},{"title":"685mm","offer_id":42314568269908,"sku":"AC2-T90-75-685","price":140.4,"currency_code":"GBP","in_stock":true},{"title":"710mm","offer_id":42314568302676,"sku":"AC2-T90-75-710","price":143.28,"currency_code":"GBP","in_stock":true},{"title":"735mm","offer_id":42314568335444,"sku":"AC2-T90-75-735","price":146.16,"currency_code":"GBP","in_stock":true},{"title":"760mm","offer_id":42314568368212,"sku":"AC2-T90-75-760","price":149.04,"currency_code":"GBP","in_stock":true},{"title":"785mm","offer_id":42314568400980,"sku":"AC2-T90-75-785","price":151.92,"currency_code":"GBP","in_stock":true},{"title":"810mm","offer_id":42314568433748,"sku":"AC2-T90-75-810","price":154.8,"currency_code":"GBP","in_stock":true},{"title":"835mm","offer_id":42314568466516,"sku":"AC2-T90-75-835","price":157.68,"currency_code":"GBP","in_stock":true},{"title":"860mm","offer_id":42314568499284,"sku":"AC2-T90-75-860","price":160.56,"currency_code":"GBP","in_stock":true},{"title":"885mm","offer_id":42314568532052,"sku":"AC2-T90-75-885","price":163.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1588\/2580\/files\/aluminium-flat-coping-t-junction.jpg?v=1774517155","url":"https:\/\/onlinemetalstore.co.uk\/products\/aluminium-cooping-junction-75mm","provider":"Online Metal Store Ltd","version":"1.0","type":"link"}