Insulating the verge: check this for me please.....

[ToughButterCup]

I have now built up the verge to the correct height. The plan calls for top of  the verge  to be insulated  with 25mm of PIR.

My question is: how best can I  fix that insulation in place ?

The answer - I think - is to nail or screw a strip to the inside edges of the gap, trapping the PIR in place.

I will then felt over the top of that.

 

This is what the verge looks like now.....

 

The blue battens are the counter-battens. 

 

I recon I will have something like 40mm (25mm of counter-batten and about 20mm of rafter)  to accommodate the fixing (a normal batten on its edge?) which holds the PIR in place. I'd then foam the edges to seal any little gaps.

 

A mate of mine told me he would just cut the PIR into shape and then simply   tack-nail the it in place .... Hmmmmm.

 

What do you think?

 

[Jeremy Harris]

Can you just fix it with low expansion foam?  It cures in around 5 minutes and bonds very well indeed to foam.  Might be a quick and easy way to hold the insulation in place. and seal it up to the relatively rough surface of the Durasol cut block edges.