Hi i had a central heating fitted last march so this winter is the first time it has been used all the time,the flue for the boiler goes through my loft space and out the roof i had to go in the loft last week and noticed their is a lot of condensation and water droplets forming on the under felt of the roof which is dripping quite alot,should this be happening as it wasn`t their before i had boiler fitted any suggestions.
Thanks. :?: