This means that the windows that supported the roof before are now being asked to carry a heavier load: By itself, this project will not create a habitable extension that can be made open plan to the home; work to the roof alone is not enough.
You may decide to revamp the structure or replace it entirely.
You must first understand which model is good and which to avoid.
Although this isn’t defined, it is usually accepted to be 75% of the roof and 50% of the walls.
The report analyzes do-it-yourself solutions such as window films and weather stripping to replacing older windows with new ones.