I came up with a solution to let more light into my living room (I lost an east facing window after building my garage), which requires shifting the staircase leading to my basement by one step. It is a split staircase and I can easily make up for the lost step at the top of the stair by adding one on the landing below. Question is, would it be okay to build new stairs on top of the existing pre-fabricated stair case, or should I remove the staircase altogether and build a new one (it would only be 6 steps)? The former would be preferred for obvious reasons, but replacing the staircase with a new one wouldn't be a big deal either (area below is unfinished and accessible). If building on top is acceptable, I'd essentially build boxes on top of the existing steps. The steps will be carpeted afterwards.

Looking to build a Sun Room addition on a freestanding 10x11deck. Was planning to use Pylex 50" screws with the 24" extensions as the foundations but then found the BAYO-S or BAYO.S screws but can't find any reviews about them. Did anyone here have used them or seen them or have any information about them to share. on YouTube it looks like they are sold at Home Hardware but their website has no information about them. I am in the Halton, Ontario area so foundation needs to be below the frost line.