Cavity Closers

[richo106]

I was just wondering if I need cavity closers?
 

In my new extension I have 100mm cavity with 90mm PIR (Thermaclass). Do I just need standard (non insulated) cavity closers on these? 

In my original house I have 70mm cavity that will be blown EPS 

 

Any advice/information and recommendations on cavity closers and best way to fit them will be very much appreciated 

 

All the brick/block work is in place so need to be retrofitted 

 

Many Thanks 

[Miek]

Close the revels with PIR cut to a snug fit. You dont need dedicated closers , especially retrofitting.