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.