Wall construction

[Jilly]

On 06/11/2024 at 14:50, Gary Martin said:

the siting of the insulation arbitrary. ??????

Nope, it's not arbitary, it's critical.

[Gary Martin]

Thanks Iceverge

 

my proposal was two skins of normal dense concrete blocks, not soft cavity blocks.

the battens and counter battens would be 25 x50 not 38 x50

the vertical battens would have to be drilled and plugged the horizontal ones 

screwed to the others with 50 mm wood screws. ( vertical cladding)

I agree extra work is required fixing the internal insulation boards, longer screws etc, but time would be saved on not messing around cutting the boards to fit in the cavity, around wall ties etc. Also no chasing out for cables and pipes, plus making good, as with a wet plaster finish.

 

I still want to go cavity block built, not ICF or timber frame.

 

my builder has just sent me pics of a 15 year old TF building that had a failed rainwater downpipe that had been leaking and splashing up under the cladding ,unseen for quite a while. The rot had gone from the sole plate to two verticals . He was brought in for minor alterations and it has progressed to a major refurb.

not his original build by the way.

[Gary Martin]

Jilly I meant arbitrary as in inside the cavity or outside it, in the room.

 

 

[saveasteading]

On 06/11/2024 at 20:57, Russell griffiths said:

rotting at the sole plate is down to poor detail and design, it was a thing in 1980

Was that before the frames had to be supported on a raised brick?

What other poor details were there that have been sorted?

 

Guessing the solutions are from:

Raise on blocks

Tanalised sole plate

Controlled drip

Drain to perimeter

Vapour control has improved.

Ventilation gap.