Keeping your home warm / heating / energy crisis / insulation etc

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Sam in reply to @Howard

Yep, defo cavity. Really don't like the sound of foam spraying tho :0(

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Howard in reply to @Sam

There's stuff that you can get in and taken out later if needs be. It's loose like packing chips but obvs. doesn't degrade. They can drill another hole later and suck it out.

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