Saw something interesting here over the last few weeks - forgot to take photos though
A couple of local hotels are being done up. One of the things that was done to them were what looks like polystyrene or similare tiles place on the outside of the hotels.
About 1m x 0.75m in size maybe a two inches thick.
The placed them on the outside of the walls like tiles - no idea how they bonded them. Then added a layer of what looks like normal cement and smoothed it over.
Is this done in Thailand? Looks like a good way of insulating a house.