If a builder has stated that he would do the following:-
"All walls to be insulated with celotex thermal and sound insulation"
And he then uses only rockwool on all the internal walls (I think the ceiling has Celotex). Is that an issue or a sign he is cutting corners or giving me cheap substitutes?
"All walls to be insulated with celotex thermal and sound insulation"
And he then uses only rockwool on all the internal walls (I think the ceiling has Celotex). Is that an issue or a sign he is cutting corners or giving me cheap substitutes?