I recently finished building a 4mx3m porch after the original small 2 x 1 one was constantly running with damp due to poor build.
It now looks like the comi boiler we have in there produces some amount of moisture and obviously was a big factor in the original porch being so damp. The windows constantly stream with water in cold weather as does any cold area.
Is this normal ? Is there something we can do obviously it worries me venting cold air into the boiler area.