Well that’s the issue Papillon was having in their summerhouse and posted on our shed forum.
I have a 10 x 10 ft timber Summerhouse with 4 fixed windows which sits on concrete foundation, it has been protected by applying preservative and is therefore watertight and there are large overhangs on the roof. When the weather is bad and the summerhouse is closed for a couple of days there is a problem with condensation inside, especially on cushions etc. Is there any steps I can take to remedy this ? I was thinking about fitting vents but wondering what is the best type and the best position.
anyway there have been a couple of answers to this – what do you think? – are there any other solutions?