I'm buying a 1960's house, it has roof insulation but no floor insulation and no heatpump (wood burner only). I'm guessing I'm going to need floor insulation and since I'm doing that it seems like I need this vapour barrier thing also I like the idea that it will make doing wiring under the house easier.
1) Have you had a barrier installed? How did you find it?
2) If you have, how much did it cost you / how long did it take you to DIY it?
General thoughts on the effectiveness of underfloor insulation / moisture barriers? I don't even know if the house is going to be cold, but given it's christchurch, it seems safer to just go ahead and do it.