Hi,

I have a bungalow built in 1950s with a suspended floor and a pitched roof
extension. The extension measures 12ft x 15ft and is heated by a 2ft x
2.5ft single radiator (inadequate, I know). Since moving in 9 months ago, I
have noticed mould growing on curtains / carpet etc particularly in the
extension. The extension is noticably colder than the rest of the bungalow
even though it's directly off the lounge. I pulled the carpet up today and
found that there was white mould (smells mushroom-like) underneath the
underlay on the chipboard flooring - it feels damp. I removed a piece of
the flooring and got a good draught so the air bricks must be Ok. It's just
chipboard flooring - no insulation of any kind. The original part of the
lounge has floorboards and does not feel damp.

What do you reckon - is it a ventilation problem? Should I take up the
chipboard and lay floorboards and hope that improves things? Or does the
floor need insulating - how would I go about doing this? Could condensation
have built up in the chipboard due to inadequate heating?

Any advice greatly appreciated!

Graham.