4mm Low-E Toughened (TGH) / 6mm Argon cavity / 6.4mm Laminated
Request made-to-measure heritage double glazing combining 4mm Low-E Toughened (TGH) on the inside, a 6mm Argon gas cavity and 6.4mm Laminated as Panel 2. This separate 16.4mm nominal sealed-unit make-up is available to discuss with a specialist supplier.
Exploded Sealed Unit Architecture
Laminated glass in a heritage window unit
This heritage glazing option includes a requested 6.4mm laminated second pane. If your project has a particular safety or security requirement, include the specification or drawings: the supplier must confirm the actual laminate construction and relevant performance, rather than relying on thickness alone.
For this 6.4mm Laminated product, the selected 6mm cavity and Argon gas give an indicative U-value baseline of 2.0 W/m²K. Panel 1 is 4mm Low-E Toughened (TGH); Panel 2 is 6.4mm Laminated. The total nominal unit thickness is 16.4mm. Confirm your rebate depth, sightline, spacer colour and the declared thermal performance with the supplier before ordering.
Choosing 6.4mm Laminated for heritage double glazing does not establish planning or conservation permission. Your supplier should confirm the exact product, and any required appearance match or project approval must be checked separately.