DPC Cavity Tray Supports

[flanagaj]

Does anyone know whether there is a cheaper alternative to the below.  I was contemplating purchasing a load of stainless steel strip or even aluminium and forming them myself.  Seem very expensive for what they are.

 

https://www.fixingsstore.com/visqueen-dpc-joint-support-400-x-100mm-stainless-steel-10-pack-rs074124/p/26435

[Mr Punter]

I have never seen these.  If you are doing a DPC cavity tray around the perimeter you could just lap any joins, but probably not have any other than change of direction.  You could use some double sided DPC tape if you are feeling really keen.  Who specified these?  Is it a radon thing?

[Russell griffiths]

Make a longer lap joint. 

[flanagaj]

When you say lapped, do you mean overlapped and bonded together using a double sided butyl tape?

 

I thought the metal stainless supports were required for all DPC trays to ensure it does not sag and potentially come apart at the lapped joint.

 

given we have to have a full perimeter cavity tray, I want to be confident that it is supported under the joints

 

 

Edited 1 hour ago by flanagaj