4mm Low-E Float / 4mm Argon cavity / 4.5mm Goethe glass
Request made-to-measure heritage double glazing combining 4mm Low-E Float on the inside, a 4mm Argon gas cavity and 4.5mm Goethe glass as Panel 2. This separate 12.5mm nominal sealed-unit make-up is available to discuss with a specialist supplier.
Exploded Sealed Unit Architecture
Goethe glass for heritage window projects
Looking for 4.5mm Goethe glass in a heritage double-glazed unit? This Goethe glass option pairs your chosen inside Low-E pane with the requested cavity and gas. For a traditional sash window, period-property refurbishment or conservation glazing enquiry, explain the drawn-glass appearance you want and provide photographs of any original glass you hope to match. Ask the supplier to confirm the exact Goethe glass product and provide appearance information; the name alone does not establish an approved conservation match.
For this 4.5mm Goethe glass product, the selected 4mm cavity and Argon gas give an indicative U-value baseline of 2.6 W/m²K. Panel 1 is 4mm Low-E Float; Panel 2 is 4.5mm Goethe glass. The total nominal unit thickness is 12.5mm. Confirm your rebate depth, sightline, spacer colour and the declared thermal performance with the supplier before ordering.
Choosing 4.5mm Goethe glass 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.