Is it possible to buy insulating indoor wall tiles?
I have just bought a house and am in the process of slowly renovating it. The bathroom is an extension that was added to the house approx 40 years ago and sits at the rear of the property. It has three external walls and although it has a radiator it is always very cold in there.
The walls have had cavity wall insulation done (approx 7-10 years ago) and I have added loft insulation to the roof cavity (the extension is only a single story).
It is currently single-glazed but I do plan on getting double glazing installed in a couple of years time.
I am about to tile the interior walls, but before I do this I want to make sure there is nothing further I can do reduce heat-loss. I have looked around but I cannot see any tiles that have insulating properties, do such things exist? If not, is there anything I can attach to the walls prior to tiling?
EDIT: I live in the UK btw...