Now this isn't really a complaint. In fact, I recommend the product. When I went to insulate my house with Airfoam I couldn't find any independant accounts of people who had installed it. We did have a couple of problems that I would have like to know about the possibility of before we did this. So if you're contemplating this, then hopefully you'll find this useful. A cold house We live in an old, weather board villa. Like a lot of New Zealand houses it had no wall insulation. New Zealands climate is temparate enough that no one is going to die from having a cold house - it's just uncomfortable. This was the case in our house. We already had
pink bats in the ceiling. We put insulation under the floor, but our house was still freezing in the winter. Even with a night store heater and a heat pump we struggled to keep the house at a reasonable temperature. So we looked to wall insulation.
The options Initially the only option I was awar of was, taking the lining off the walls, putting in pink bats and relining the walls. This is a major undertaking to do the whole house and would involve weeks of work and a lot of cost. After ringing around I found out about
airfoam. For this they drill holes in your walls from the outside and pump in this liquid foam. The foam sets in about 30s - to something with the consistency of polystyrene. They they bog up whole, sand it and cover the whole with undercoat. Three men were able to do our whole house in a day and we were quoted about $4000.
The problems The main problems we had were with the moisture from the airfoam. In some rooms our wall paper bubbled. We also had a noticeboard fall off the wall in the kitchen and break some dishes. This happened because the wall had softened from the moisture.
To airfoam's credit, they did accept responsibilty for the problem. The guy running it had only just bought the franchise and said he hadn't seen this happen before. He offered to completely repaint the walls that were affected. We ended up electing to put up with it for a while and took a discount of the quoted price. We weren't prepared to put up with tradesmen in our house for several more days (we have a young family).
An organised person would paint over all the holes on the outside walls. I haven't got round to that yet - so the house will probably stay with these white circles all over it until we next paint it(the house is white so it doesn't look too bad from a distance). It would be nice if part of the service was to paint the holes properly - to match with the existing colour - rather than leaving them with just undercoat.
The positives Winter hasn't hit yet - but the signs are good. This morning it is cold and rainly outside and we awoke to our living area at 19 degrees - with no heating. We also noticed the house was a lot quieter - we couldn't hear the street noise that we normall could.
I'll keep you posted as winter comes - but so far I would recommend this.