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 ? I know that this is a narrow gap but I believe that there are modern infills that can now be used in such spaces.
What about damp bridging the gap ? There are endless horror stories about this so how can it be prevented
OR
should I just leave things as they are ?
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
Brian.
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 ? I know that this is a narrow gap but I believe that there are modern infills that can now be used in such spaces.
What about damp bridging the gap ? There are endless horror stories about this so how can it be prevented
OR
should I just leave things as they are ?
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
Brian.