Insulating your outside walls, on the inside (the mother of all home DIY projects)
◻︎ Why? To reduce heat loss on homes that have solid walls, or unfillable cavity walls.
◻︎ External and internal wall insulation are both possible. Internal is cheaper, but you do reduce your floor area. So do your research, talk to suppliers and people who have already done done it.
◻︎ The process is to fix insulation on the inside of the outside walls.
There are a few alternatives:
◻︎ Research into the available materials and check the manufacturer’s data sheets carefully especially for U values, suitability and safety, including fire ratings (relevant to ‘insulating wallpaper’ – see www.anaglypta.co.uk and follow the links for Wallrock KV600).
Looking for a DIY project – look no further
Do remember that you will lose floorspace along the outside wall – not a lot, but it can be critical. Also on larger properties which are valued on a ‘per square metre’ basis a market valuation could be negatively affected (perhaps even offsetting the value of the improvements you’ve made), so check with an estate agent.
Tackling internal insulation using a room-by-room approach makes a lot of sense if you are going to modernise (perhaps via DIY) the house over a period of time anyway.
To start your research try:
Energy Savings Trust report – internal wall insulation
Ofgem – Energy Company Obligation (ECO scheme) for possible grants