Cavity Walls Constructed With Insulation – Bungalow Day 10

Today the builders started on the internal block wall and the cavity insulation. Today I learned that the inner and outer blocks are different, inner having better thermal properties – they contain more air. And that insulation is now 10cm thick (Earthwool insulation), but was only 3cm thick a “few” years ago when the builder started doing extensions … you can learn a lot chatting to the builders in the morning!

Now that the internal walls are in place in parts I could measure the rooms, and they came pretty much to 280cm and 380cm – exactly as I had planned – although, once plasterboarded, they will be a little smaller.


Kitchen window

Kitchen window

Kitchen diner French doors

Kitchen diner French doors

Living room side window

Living room side window

supporting wall

Supporting wall – the rest will be stud wall I think

Cavity insulation

Cavity insulation

Extension from the back

Brick wall starter with old wall exposed

Brick wall starter with old wall exposed

How deep is the cavity insulation? It's 10cm deep and Earthwool

How deep is the cavity insulation? It’s 10cm deep Earthwool – also note the two different types of block 

More old brick wall exposed

More old brick wall exposed

The kitchen drain and soil vent

The kitchen drain and soil vent

Pair of French doors at the back of the extension

Pair of French doors at the back of the extension

More like this in the Bungalow Extension section

  1 comment for “Cavity Walls Constructed With Insulation – Bungalow Day 10

  1. May 11, 2018 at 3:21 pm

    Good job, I remember reading your blog a few years ago about the last extension you built. I just come across your site again and had a read through the new posts. Excellent info for anyone planning on building an extension.

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