Wall Starters or debonded wall ties

[Ash10010]

I'm building a double storey side extension, the plans specify movement joints where the extension meets the house. Is this required or can I just use standard wall starter kits?

 

[Ash10010]

Do you think the movement joint on the plans is for some sort of vertical movement tie rather than horizontal movement joint. Is there any problems with cracking using wall starters?

 

[stuart45]

Wall Starter Systems | Ancon[URL='https://www.ancon.co.uk/products/wall-ties-restraint-fixings/wall-starter-systems']Wall Starter Systems | Ancon[/URL]
You can get starter kits with slip ties if needed.

 

[Ash10010]

I'm not sure if they are needed though. Is it common place to just use standard wall starter kits?

 

[stuart45]

Normally standard kits, but you need to check with the designer whether slips are required.

 

[Ash10010]

Thanks, it's quite difficult getting a response from him now. I can't see why slip ties would be needed, cavity wall construction brick and block on to 1930s brick and block house.

 

[stuart45]

Can be if a raft foundation is used next to a strip foundation and some movement is allowed for.

 

[^woody^]

It would be a crap designer that specifies a movement joint instead of a tied connection. Perhaps he just doesn't know the difference but actually meant to specify a flexible tied joint to allow for movement?