{"product_id":"21-5mm-toughened-laminated-glass-panels","title":"21.5mm Toughened Laminated Glass Panels - Heavy-Duty Safety Glazing","description":"\u003cp\u003e21.5mm toughened laminated glass panels - the heavier-duty laminated build for high-load balcony fall-protection, structural glass walls, larger overhead glazing and tall balustrades. Two 10mm toughened sheets bonded with a PVB interlayer (10.10.4 build) for combined strength, stiffness and post-breakage integrity. All panels are 1087mm high in standard stocked widths from 500mm to 1200mm. From £140 inc VAT with 3-5 working day UK delivery.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21.5mm (typically 10.10.4 - 10mm + 1.52mm PVB + 10mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1087mm (all panels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidths available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500, 600, 700, 800, 900, 1000, 1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlass type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eToughened laminated safety glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterlayer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePVB (polyvinyl butyral)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 14449 (laminated), BS EN 12150 (toughened)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEdges\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCardboard-wrapped, packed flat on a pallet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e21.5mm vs 17.5mm Laminated - Which Do I Need?\u003c\/h2\u003e\n\u003cp\u003eThe 17.5mm laminated build (8.8.4) is the standard specification for general balcony and balustrade fall-protection - the most common choice for domestic juliet balconies and standard balustrade infill. The 21.5mm (10.10.4) is the heavier-duty upgrade: the thicker 10mm toughened sheets make it noticeably stronger and stiffer, suited to higher fall heights, longer unsupported spans, larger panels, structural glass walls, and any application under heavier loading. Pick 21.5mm when the structural engineer or installer specifies it, or when you need that extra margin of strength.\u003c\/p\u003e\n\u003ch2\u003eToughened Laminated Construction\u003c\/h2\u003e\n\u003cp\u003eLaminated glass is two or more sheets of glass permanently bonded together with a polymer interlayer (PVB) using heat and pressure. When both sheets are also toughened (as here), you get the impact strength of toughened glass combined with the post-breakage integrity of lamination. Under sufficient force the glass will still break, but the fragments stay bonded to the PVB interlayer rather than falling free - the panel stays largely in place and the risk of injury from falling glass is sharply reduced. This is what makes laminated glass the standard choice for overhead and high-fall applications.\u003c\/p\u003e\n\u003ch2\u003eCommon Uses\u003c\/h2\u003e\n\u003cp\u003eHigh-load balcony fall-protection (upper-floor balconies, taller balustrades), juliet balconies on higher floors, larger overhead glazing spans (canopies, skylights, roof glass), structural glass walls and partitions, frameless or minimally-supported balustrade systems, stairwell and atrium balustrades, and security or acoustic glazing where the extra mass helps.\u003c\/p\u003e\n\u003ch2\u003eAvailable Sizes\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePanel (W x H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice (inc VAT)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500mm x 1087mm\u003c\/td\u003e\n\u003ctd\u003e£140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e600mm x 1087mm\u003c\/td\u003e\n\u003ctd\u003e£162\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e700mm x 1087mm\u003c\/td\u003e\n\u003ctd\u003e£192\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e800mm x 1087mm\u003c\/td\u003e\n\u003ctd\u003e£207\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e900mm x 1087mm\u003c\/td\u003e\n\u003ctd\u003e£218\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000mm x 1087mm\u003c\/td\u003e\n\u003ctd\u003e£258\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1200mm x 1087mm\u003c\/td\u003e\n\u003ctd\u003e£294\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eNeed a Different Size?\u003c\/h2\u003e\n\u003cp\u003eThe sizes listed here are the standard stocked panels. For bespoke sizes, cut-outs or shaped panels, please \u003ca href=\"https:\/\/rackerman.co.uk\/pages\/contact\"\u003econtact us\u003c\/a\u003e for a quote. All shaping must be done before the toughening and lamination process - it cannot be cut or drilled on site.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is 21.5mm toughened laminated glass?\u003c\/strong\u003e\u003cbr\u003eTwo panes of 10mm toughened glass bonded with a 1.52mm structural interlayer to form a 21.5mm laminated unit. The heaviest-duty glass in the range, designed for high-load sole-barrier balustrade and structural glazing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen is 21.5mm needed instead of 17.5mm?\u003c\/strong\u003e\u003cbr\u003eFor higher line loads (commercial, public and assembly areas), taller barrier panels, and applications where the structural engineer specifies a heavier glass makeup to meet the loading under BS 6180.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the weight of 21.5mm laminated glass?\u003c\/strong\u003e\u003cbr\u003eApproximately 52 kg per square metre. A 1087mm x 900mm panel weighs approximately 51 kg. Mechanical handling or two-person lifting is needed on site.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat interlayer is used?\u003c\/strong\u003e\u003cbr\u003ePVB (polyvinyl butyral) or ionoplast interlayer bonding the two toughened panes. The interlayer holds the broken glass in place if either pane fails, maintaining the barrier function.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs 21.5mm laminated glass suitable for Juliet balconies?\u003c\/strong\u003e\u003cbr\u003eYes. 21.5mm toughened laminated is commonly specified for Juliet balconies, which are sole-barrier applications by definition (no handrail, glass is the only thing preventing a fall).\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is 21.5mm toughened laminated glass?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Two panes of 10mm toughened glass bonded with a 1.52mm structural interlayer to form a 21.5mm laminated unit. The heaviest-duty glass in the range, designed for high-load sole-barrier balustrade and structural glazing.\"}}, {\"@type\": \"Question\", \"name\": \"When is 21.5mm needed instead of 17.5mm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For higher line loads (commercial, public and assembly areas), taller barrier panels, and applications where the structural engineer specifies a heavier glass makeup to meet the loading under BS 6180.\"}}, {\"@type\": \"Question\", \"name\": \"What is the weight of 21.5mm laminated glass?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Approximately 52 kg per square metre. A 1087mm x 900mm panel weighs approximately 51 kg. Mechanical handling or two-person lifting is needed on site.\"}}, {\"@type\": \"Question\", \"name\": \"What interlayer is used?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"PVB (polyvinyl butyral) or ionoplast interlayer bonding the two toughened panes. The interlayer holds the broken glass in place if either pane fails, maintaining the barrier function.\"}}, {\"@type\": \"Question\", \"name\": \"Is 21.5mm laminated glass suitable for Juliet balconies?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 21.5mm toughened laminated is commonly specified for Juliet balconies, which are sole-barrier applications by definition (no handrail, glass is the only thing preventing a fall).\"}}]}\u003c\/script\u003e","brand":"Rackerman","offers":[{"title":"500mm x 1087mm","offer_id":58138276692355,"sku":"GLASS-LAM-215-500-1087","price":140.0,"currency_code":"GBP","in_stock":true},{"title":"600mm x 1087mm","offer_id":58138276725123,"sku":"GLASS-LAM-215-600-1087","price":162.0,"currency_code":"GBP","in_stock":true},{"title":"700mm x 1087mm","offer_id":58138276757891,"sku":"GLASS-LAM-215-700-1087","price":192.0,"currency_code":"GBP","in_stock":true},{"title":"800mm x 1087mm","offer_id":58138276790659,"sku":"GLASS-LAM-215-800-1087","price":207.0,"currency_code":"GBP","in_stock":true},{"title":"900mm x 1087mm","offer_id":58138276823427,"sku":"GLASS-LAM-215-900-1087","price":218.0,"currency_code":"GBP","in_stock":true},{"title":"1000mm x 1087mm","offer_id":58138276856195,"sku":"GLASS-LAM-215-1000-1087","price":258.0,"currency_code":"GBP","in_stock":true},{"title":"1200mm x 1087mm","offer_id":58138276888963,"sku":"GLASS-LAM-215-1200-1087","price":294.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/files\/18562155001087x1000.jpg?v=1780058027","url":"https:\/\/rackerman.co.uk\/products\/21-5mm-toughened-laminated-glass-panels","provider":"Rackerman","version":"1.0","type":"link"}