I have a back door landing (3ft x 3ft) and stairs (2 steps) that needs to be replaced. Currently it is built on top of a pair of L shaped frames that are bolted to the house. See pictures.
Can I do the rebuild on top of this existing frame (it seems secure) or would it be better to start from scratch and do a complete rebuild from the ground up.
The existing support structure just seems like it wasn't done right. But I really have no idea.
Any help/advice would be appreciated.
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