You only get condensation where you have two things!
One is warm humid air!
The other is a cold surface.
Once you sealed off the inside of the cupboard the flow of warm air stopped and the inside became cold.
Merely open it up again and for a while leave the door open.
If you can introduce heated air into the cupboard to warm all surfaces.
Now that summer days are here again the problem will go away until next winter.
But then, you will remember!
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!