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Need advice from Cavity Wall Insulation expert please.

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Old 01 February 2018, 01:44 PM   #1
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Join Date: Jan 2004
Location: Northamptonshire
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Default Need advice from Cavity Wall Insulation expert please.

We moved into our 1970's built bungalow about 18 months ago.
As a result of a kitchen /diner extension build I was wondering ....

The structure of the bungalow is ..
Outer brick skin
40mm air gap
Building paper
12mm Ply
4 stud walls with polystyrene infills
Foil membrane
Plaster board and plaster.

Would it make sense to have the 40mm air gap filled with an injected insulation material i.e. loose fill/foam ?
Part of the reason for asking is that our heat source for C/H is an air to water heat pump and every thing I read about this is that insulation is the key.
If it is a good idea to insulate the cavity (first time we will have ever done anything like this) then what do I need to look for when googling local installers and any tips/advice ?

Many thanks
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Old 01 February 2018, 01:46 PM   #2
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Location: Notts
Posts: 21,509

there is a minimum width they can do it, thats gonna be the biggest question.
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