This is my first post here so please be gentle ;-)
I live in a house built in the late twenties. The walls definately have a small cavity but I have been told that it's not wide enough to blow insulating material into. One insulation company employee said that a two inch gap was the minimum they could work with. Is this true? The employee looked bored and uninterested at the time so I don't really trust him.
If he was indeed telling the truth can somebody suggest a (reasonably cost effective) way of insulating the walls.
Thanks for your interest.