How would you insulated if building block and block ?

[LSB]

Are you saying that insulation below DPM in the block / block cavity WONT transfer moisture and cause damp.

Is this the case with all types of insulation.

My arch drawings show insulation (rigid) right to the founds, but I was concerned that this would allow damp and when I asked her, she said it's up to the SE, who said it's up to the arch / BC.

 

[joe90]

I insulated from founds to DPC with XPS and rockwall batts above.

 

 

Edited May 6, 2023 by joe90

[Dave Jones]

14 hours ago, Big Jimbo said:

But getting brickies to fit that well is going to be hard work IMO.

 

how can they fit it wrong, its tongue and groove ? Maybe your local brickies cant tell up from down!

[LSB]

9 hours ago, joe90 said:

I insulated from founds to DPC with XPS and rockwall batts above.

 

 

this is the first time ever that I've seen drawings this way round, normally outside is left 🙂

 

[CalvinHobbes]

On 06/05/2023 at 17:54, Iceverge said:

 

Blown beads.

 

Leave the cavity run as low as you can. Right to the foundation if you can get your SE to agree. Don't cross the cavity with the DPM. Have a separate DPC on the outer leaf. 

 

This will give some allowance for mortar droppings not to bridge the cavity above DPM as they'll just fall to the abyss harmlessly. 

 

Then fill the cavity with blown beads. 

 

If you have a line of aerated blocks in line with the floor insulation you'll get performance matching an insulated raft foundation. 

 

 

How is this?