I've been in the loft space over of my 1930s semi-detached house this weekend and noticed that two of the beams (45 X 95) coming diagonally from one side of the roof to the loft floor is bent. I have attached a picture to show what I mean. My query is whether this is indicative of a big problem, and how this can be resolved. I am happy to take on a DIY job to fix this, but is that possible? What needs to be done? Can I lay a new beam next to the bent one for extra support? Or is this a task that needs a professional, and would a general builder, rather than a roofer, be best for this? What would you expect them to do, and how much should I expect it to cost?
Many thanks in advance for your help.
Mike