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Aluminium in Period Homes
The short answer
Slim aluminium can suit some period homes — especially where steel windows were original, or on rear extensions — but it isn't right for every setting and isn't automatically accepted where controls apply.
Last reviewed September 2026 · General guidance, not legal advice
Where it can work
Rear extensions, garden rooms, barn conversions and properties whose original windows were metal.
Where to be careful
Listed buildings and sensitive conservation-area elevations, where the original material and pattern may be expected.