I've just inherited my dad's house and I've been looking over it's condition, and one of the walls was getting damp when it rains, I had a look in the loft and saw the following:
Is this dry rot? It's on the two diagonal timbers and the load bearing one that runs along the bottom that you might not be able to see in the photo. To the left it also looks like an old wasps nest and they have eaten away the insulation!
What is the best course of action? How urgently does this need doing?