We have a double garage that is quarter integral with the house. The idea is to convert the bit under the house to a utility room. There is a pillar in the middle of the garage which holds up the corner of the house so it is a matter of closing off two openings and cutting a door through from the hallway.
My idea is to put up studs and to use plywood on the garage side, plasterboard on the house side and insulation between. I just want to check that there are no regulations that might disapprove of this.
If this is ok, I notice studs are 89mm wide but insulation is in multiples of 25mm. Would I leave the air gap garage side or house side? Is there any issue between choosing celotex or polystyrene?
My idea is to put up studs and to use plywood on the garage side, plasterboard on the house side and insulation between. I just want to check that there are no regulations that might disapprove of this.
If this is ok, I notice studs are 89mm wide but insulation is in multiples of 25mm. Would I leave the air gap garage side or house side? Is there any issue between choosing celotex or polystyrene?