BS EN 1036-1BS EN 12600 (Safety Backed Class 2B2)Approved Document KReviewed Technical Specification
Commercial & Architectural Mirrors
Copper-free silvered reflective surfaces engineered with safety backing and high-humidity corrosion resistance.
Engineering Definition: High-clarity float glass silvered with pure metallic silver, passivated with environmentally friendly copper-free chemical conversion layers, and protected by multi-coat protective polymer backing paints (BS EN 1036-1).
Material Construction Matrix
28mm High-Performance Insulating Glass Unit (IGU)
Thermal Transmittance:1.1 W/m²K
Acoustic Reduction:Rw 32 dB
Explode Layers
1
Outer Pane (Surface #1 & #2)(6mm Low-Iron Toughened)
6.0mm
2
Warm-Edge Spacer & Hermetic Seal(Composite Polymer & Butyl)
16.0mm
3
Argon Gas Cavity 90%(Noble Gas Fill)
16.0mm
4
Inner Pane (Surface #3 & #4)(6mm Toughened Low-E Soft Coat)
6.0mm
Physical & Mechanical Performance Characteristics
Safety Class:Class 2B2 when fitted with cross-linked polypropylene woven safety backing film
Bending Strength:Equivalent to annealed float; requires continuous wall substrate support
Thermal Shock Resistance:Standard annealed mirror: ~40°C max temperature difference (do not place behind unshielded cookers)
Fracture Behaviour:Safety backed mirror fractures into adhered shards held securely by structural backing tape
Typical U-Value (Ug):5.8 W/m²K (monolithic wall cladding)
Acoustic Reduction (Rw):Rw 29 dB to 31 dB
Max Sheet Dimension:Up to 2440mm × 3660mm (jumbo mirror sheets)
Density & Mass:2.50 kg/m² per mm glass thickness (4mm = 10 kg/m², 6mm = 15 kg/m²)
Key Architectural Advantages
- •High optical fidelity: low-iron mirror substrate eliminates greenish tint for accurate retail lighting and skin tone rendering
- •Corrosion endurance: copper-free coating resists black-edge oxidation in high-humidity commercial bathrooms, spas, and gyms
- •Safety backing prevents flying shards and laceration injury in commercial public washrooms and fitness centers
Critical Engineering Constraints
- •Standard silvered mirrors CANNOT be thermally toughened after silvering (silver burns off in 620°C furnace)
- •Must only be mounted with mirror-specific non-corrosive neutral adhesive (solvent-based contact adhesives destroy silver backing)
- •Substrate wall must be completely dry and flat; uneven adhesive beads cause distorted optical reflection ("funhouse mirror" effect)
Fabrication & Edge Processing Tolerances
Cut After Toughening:Permitted (Cold Cut)
Heat Soak Testing (HST):Not Required
All hole drilling and socket cut-outs must be deburred and arrissed before mounting.
Architectural Specifier Checklist
Verify these technical criteria prior to contract documentation:
1Mandate BS EN 1036-1 compliance to verify copper-free and lead-free environmental formulation.
2Specify Safety Backing Film (BS EN 12600 2B2) for all public, commercial, or accessible locations.
3Specify 100% solvent-free neutral cure mirror adhesive and mechanical bottom J-channels for heavy panels.
Frequent Commercial Applications
Gymnasiums & Dance Studios
Large-format floor-to-ceiling safety-backed 6mm mirrors with polished arrissed edges.
Hotel & Restaurant Washrooms
Integrated LED backlit mirrors, antique bronze mirrors, and demister pad assemblies.
Retail Fitting Rooms & Lift Interiors
High-traffic commercial mirrored wall cladding.
Network Procurement Routing
BuyGlass.co
Commercial cut-to-size glass manufacturing, direct supply, and transactional quoting platform.
Recommended Action: Specify dimensions, edge finish, and safety backing for direct commercial supply.
Proceed to BuyGlass.coReviewed by: Interior Architectural Specialist, BuyGlass Editorial Panel
Last Standard Verification: 2026-10-30