I've got a small single glazed unheated conservatory that leads from the main house to a small unheated utility room. It sufferers both from condensation in the winter and draughts that blow back into the main house. I'm currently resealing the all the windows with silicone. Then I'm planning to install secondary glazing of the heat film and double sided tape variety over the fan lights.
In the utility the tumble drier vents through a ribbed tube that connects to a plastic pipe that goes through the wall and then right angles downward. Whilst this keeps the rain out is this normal or is it more usual to have some sort of anti-blow back vent?
In the utility room the washing machine discharges into a large stainless sink before the water drains away. I'm thinking of installing an extractor fan in the utilties' external wall to try to cut down on the damp. Last year we ran a dehumidifier in the conservatory, but now we've got a wireless electricity meter. If I did the whole conservatory with secondary glazing it would be a relatively big area. How hard would it be to knock a tidy hole in a 1960's external wall?