Hi, I have a fifteen year old house and the existing loft insulation, brown fibre wool, is really starting to smell. The centre section is boarded out but there are gaps around the boards. At the eves, daylight can be seen so ventilation is possible. When it is cold, condensation drips off the roof felt. I was going to replace all the insulation but your forum has advised other users to to lay the new stuff over the old. What do you think? Renew the insulation and re-board or do I have a more serious problem?
Thanks.
Thanks.