I am replacing a poorly constructed deck, extended from what was originally a smaller cantilevered deck. The original dates back to the construction of the house about 35 years ago. Some parts of the joists are rotten and I don't feel comfortable integrating them into the new deck. I'm particularly worried about rot eventually reaching the part inside the house. And in any case, I want the replacement wider than the area with cantilevered joists so it seems like it would be a lot more work to reuse them.
So I'm looking at removing the original joists, at least enough to get them out of the way. I am thinking about cutting them as far back as I easily can, which might mean about an inch or two behind the face of the bricks. Then treating the wood and covering the holes with mortar. Is this a good idea? Am I missing something, or going about this completely wrong?
The red pieces are just sistered outside the house and had support further away. And in case anyone wonders: no, I do not intend to anchor a new ledger board to the bricks.