From June Beslièvre.
MAURICE Boots’s letter about cavity walls (JEP, 4 November) interested my husband Peter, who remembers these from before the war.

He learned his trade as a carpenter from the late 1930s, working for W Husband the builder, who he describes as the best in the Island at the time.

They built 44 houses at Coastlands and Southlands, Grève d’Azette, followed by 48 at Clubley Estate, as well as La Pouqelaye. These had a sale price of £600 to £800.

Their workshop was at Sligo House, Aquila Road, which contained all the machinery and stock of timber imported direct from Canada, which, no doubt, would have given today’s Health and Safety and Fire Service nightmares.

By a complete coincidence some 50 years later our son bought the former Sligo workshop, which we were able to visit, bringing back many memories for Peter of those days.

Yes, cavity walls were in Jersey before the war, which brings us to the question – who invented them?