The squatters do not hesitate to pull up the floorboards of some rooms and use them for firewood.
Once the front door is bolted, people feel that nothing can touch them, even though radon gas could be seeping up through the floorboards.
They live in houses with gaping roofs, with cracked plaster and broken floorboards.
It then enters the house through the ventilation points underneath the floorboards.
I have been led to believe, however, that when the consultants lifted the floorboards on the system they found a catalogue of serious defects.
They have damp walls, leaking roofs, rotting floorboards, no inside lavatory, no hot water and no bathroom.
They tore up the floorboards to make fires.
And, if you have time, pull up the floorboards in your front room and dig a trench.