it seems ive got a condensation problem and it is leading to mold growth. the upstairs of the house is particular bad. the cealing in the bathroom and the upstair hallway is really bad. also a wall in the box room is very damp and running with condensation. cheaked the gutters and in the loft, plenty of circulation of air. nextmove is to buya dehumidifier

p, May 2005

It might be a good idea to invest in a dehumidifier, about £80, you can get them from argos usually.

T.R.N. Ent., April 2006

The previous answers are quite right, but here is a little tip I picked up several years ago while working in demolition. (Not the big explosive kind. Knocking down chimneys and out buildings with a big hammer and lots of muscle!!) Use some tape to seal a piece of aluminium foil onto a wall where the damp is prevalent. Leave overnight or a day or two. If condensation forms on the outside surface of the foil, the damp is a condensation problem. If the foil stays dry on the outer surface, but on removing the damp is underneath the foil, then the damp is either rising or falling damp, suggesting a structural problem. Which will probably require professinal and probably expensive attention. Don't be tempted to go cheap. Use a reputable builder if this is the case, or you may find the yourself with a second, possibly bigger bill to put things right. Also, check your buildings insurance to see if you are covered.

Paul Higgins, July 2005

Agree with previous answer...you shouldn't get condensation if you have good air circulation. Have you got double glazing? Has it got trickle vents? Do you have a window(s) open most of the time? Have you got a tumble drier in the kitchen that isn't vented properly to the outside? Do you leave the bathroom door open when you're having a bath or shower? This will all cause condensation. A dehumidifier will do the job but you shouldn't really need one if you have a good air flow through the house. It'll also cost you cash to run it.....cheaper to open a window or two!

Denis Langley (flatcat15), June 2005

Check exhaust vents to make sure the are venting to the outside. If house is on a crawl, increase air circulation. Purchage a good de humidifier

cholbach, June 2005