A piece of Celotex insulation board (Broadstone BH18)

I need a new cover for my loft water tank and don't particularly want to buy a full sheet of the thick insulation material they put into new houses, and then waste most of it. I need a piece about 120 x 80 cm if anyone has any spare. Thanks for reading this.
Can you help with this request?
To reply to this post, please log in or sign up.