I'm laying a 25mm layer of Celotex TB3000 on our existing concrete floor. (Note: I've yet to move in to the 60's bungalow so that part will be easy.) What I'm wanting is to cut shallow grooves in the insulation to take the heating's 10mm copper pipes. As I'm likely to be needing 70m of groove I'm wondering how best to do it.
How would you make a 10mm wide and deep groove in Celotex
Barry
How would you make a 10mm wide and deep groove in Celotex
Barry