Building wall with fulfil insulation

[trevorbayliss]

What order is a brick and block wall built using full fill insulation ?

Is it a case of build the block work up to the height of the insulation batt, then fit insulation and then build the brick skin, or do you fit the insulation after the brick skin has gone in ?

I can see how rigid insulation is done, but not how full fill works.

 

[tomfe]

Normally inner skin, batts then outer skin. But you can do it the other way around.

 

[noseall]

We ALWAYS build the brick-work first. This is your façade. Let the brickwork dictate to the blockwork (in terms of opening jambs) not the other way around.

The problem is, not all bricks above DPC are exactly the same as those below, so don't rely upon those below DPC for accurate setting out.

 

[stuart45]

Traditionally the brickwork went up first, it was only when insulation boards were stuck to the inner skin that the blockwork had to go up first,
With full fill the brickwork can go up first again.
As above you might have to dry bond to set out for your frames.

 

[trevorbayliss]

Ok thanks all. I am using reclaimed bricks so these are a little harder to lay. The pointing will be flush with the brick and then rubbed down.

I think i would feel more confident building up the two skins at the same time.

 

[23vc]

On mine I've built it up outer skin first, enough to put the next course of bats in (ie 6 courses) then put the bats in and get the blockwork to the same height. So all 3 are at the same level. Then repeat. I've found the thing to avoid is creating a 'trough' which if you're like me and not a pro, will get muck falling off into it and harder to clean out if you have to reach your arm down between the skins.

 

[garyo]

I'm an outie too.

 

[trevorbayliss]

23c, sounds like how i will do it.

 

[John D v2.0]

You need inside first if you're using partial fill (according to our architect) because of air movement. So by that logic for full fill there won't be air movement so either is fine.
Unfortunately our builder didn't know that so he had to rebuild half the wall, because the partial fill was floating around somewhere in the middle of the cavity with a draught either side