Traditionally insulation in pitched roofs is placed at ceiling level because the insulation thickness is virtually unrestricted. Horizontal loft insulation is a very low cost on return solution for improving the thermal efficiency of your home. Roofs with cold loft spaces are usually ventilated to allow for the removal of moisture from the loft area.
Rockwool RockPrime for lofts
RockPrime is a mechanically installed Rockwool blown loft granulate that offers fast installation and causes minimum disturbance to occupants.
Rockwool LoftRock for lofts
Unlike roll insulation, LoftRock blown insulation will effectively cover areas where heat is allowed to escape.