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Hi All, Was wondering if anyone knows what exactly happens if you compress standard mineral wool such as rockwool into a smaller cavity. So if you have a 200mm thick roll and squeeze it into a 100mm cavity. They say it reduces performance, but does anyone know to what extent? Are there...

Hello All, First post but have found the advice here useful hundreds of times before - so Thank You all for keeping up such a great service. We would like to build an office in the garden and I am wondering about insulation to go between the walls (ceiling and floor sorted mostly). I...