So is this something that I should be regularly doing and there is no real way to prevent this? (Apart from minimising condensation?)
Is it a real problem anyway since it's not in the inside of the window?
They do, but I keep them shut to minimise heat loss, I sense that was a stupid thing to...
Most windows casings in the house have a lot of mould, see photo below:
Apart from being disgusting, do it have any negative effect? Should I clean it? It did clean most part of a single window and it took ages as it's not flat surface.
My patio double glazed door does not properly seal, apart from feeling the draught with my hand I can actually see the gap. This is on newly-purchased a 10 year old house.
Regarding the top and bottom parts of the black rubber seal, the farther it is from the hinges the wider the gap becomes...