am buildin a conservatory with 6 brick dwarf wall above dpc and 3 in cavity but want to insulate the cavity. am i right that i can / should only full fill it as a partial fill requires 50mm gap?
also, how low down does the insulation have to go - is it just above the dpc?
also does that meen air vents to vent the cavity are therefore worthless (below the dpc) or do they serve a purpose below the dpc?
also, how low down does the insulation have to go - is it just above the dpc?
also does that meen air vents to vent the cavity are therefore worthless (below the dpc) or do they serve a purpose below the dpc?