I am looking to add plywood flooring in my attic for storage page. There is a lot of space, very large areas. From what I've been reading, it looks to be ill-advised to add flooring if the roof was constructed with trusses instead of rafters (one such site). I have no idea what these are. Would someone be able to explain what these are and if my home has it.
Other pictures are here.
Also I am aware that I would need to extend the floor joists keep the insulation intact.
Best Answer
This is "Ridge board and rafters":
These are roof Trusses:
From your pictures, you clearly have ridge boards with rafters coming off of them.
The reason trusses shouldn't hold the weight of flooring or heavy boxes is because they are typically made from relatively small boards (2x4's in some cases) and the bottom board is already carrying a significant roof load because of the design of the angled elements.