I'm hoping to make some space available in my attic. I don't want to do a full attic conversion as I really only need storage space.
The house is a Semi-D with a hipped roof. There are three rafter ties, two of which restrict a person's movement in the attic as they are at waist level. The third is along the party wall so it's out of the way. I intend to get a qualified roofer to remove the two rafter ties and replace them with something else. I have two questions that I need clarity on;
1. What are the alternative to rafter ties? I want to educate myself in advance of the roofer inspecting the roof so I know what's involved.
2. What certification do I need once the job is done? To satisfy house insurance, building code, etc.