Two years ago we had our flat roof totally replaced. It now consists of 3 layers of bitumen paper. On top of that is tanalized wood supporting composite, 25 year lifespan, composite decking.
A builder has told us we should not walk on bitumen paper flat rooves even though we are really walking on decking supported by wood on 3 layers of bitumen paper.
We are disappointed we are being told to replace a flat roof with no reported problems just because he occasionally walk on it.
Is this advice correct?