Forums DIY House insulation improvements? Reply To: House insulation improvements? May 9, 2018 at 9:56 am #199 nab 23 Posts Keep attacking the draughts, you can hunt them with smoke or a candle, ideally in different wind directions. Check electrical fittings/outlets for draughts. Some ceiling lights will tolerate a metal hat then insulation over them or you can get fire rated sealed LED units that work under insulation, depends what you have and how attached to them you are. Rugs. Curtains. Draught stopper on the bog overflow.