thank you for all replying to my post.
To rose and the other who have your lofts facing north are your loft closed in?
My loft face north and 60% of the loft is open to the weather front and back, no rain can get in.
but they is no sun shining into my loft.
I live next to a river and the humidity & temerature is up & down.
I,m think of closing my loft and changing my roof to clear plastic so i can get the sun shine in.
Just trying to get some ideas.