Mildew on inside of shed roof. Getting rid and prevention?

blue_monkey_2

I've got mildew on my shed roof, it has only been up since last Sept but with all the snow sitting and then the rain we have had it has got condensation in there and there is mildew growing on the roof, just one one side but it is starting to spread. Any ideas on how to get rid?

My husband said to put the silver insulating roll stuff over it but I said I'd prefer to get rid of the spores first as it is growing. I've now opened the windows a little and it did not feel as damp in there today but what should I be doing to get rid of this and ensure it does not happen again.

maninthestreet

Spray with diluted bleach.

blue_monkey_2

Will that be OK on the wood? I use this in the house but was not sure about soaking the roof through from the inside.

spakkker

You can get anti-fungicidal chemicals tho bleach can do-but more ventilation is the real solution.