I've been tasked with insulating beneath the floor of the nursery this weekend, and have some stupid questions. Here goes:
- Kingspan boards or stuff in a load of rockwool?
- Do I need to leave any space around the joist ends, or can I insulate up the the walls? I dimly remember something about leaving space for air circulation to prevent damp, but can't remember.
- How important is it to keep the insulation away from power cables? This is a room above the kitchen, so there are recessed spotlights and power cables. Cables are massively over rated for the current carried as we've changed to LED bulbs.
Background: House is a 120 year old end terrace. Room to be insulated under is the back bedroom, in the gable above the kitchen. Kitchen ceiling is original lath and plaster. Reason for insulating is partly heat retention but mostly sound reduction. I want to be able to put the radio on in the kitchen while PFB sleeps above.
Thanks in advance!