My plans call for building the retaining wall with Allan Blocks and then using pavers for the patio surface. The max height of the patio is roughly 30 inches.
1. I want the patio to be level with my back door so I can walk out right onto it, similar to if I built a deck. Can the patio come up right against the house floor joists if I flash the outer rim joist of the house? One contractor said he would only do it against the foundation, not the house because of water problems. If I seal, flash and caulk the outer rim joist, shouldn't it be ok?
2. I have a basement window well in the area where I want the deck. I'm thinking of either sealing the basement window or putting in a taller window well so it comes up to the surface of the patio. Can a window well support my raised patio if I choose to keep the window?
3. The Allan Block system does NOT call for any footings other than a trench with blue stone for drainage. I'm obviously very concerned about movement. Has anyone built a patio in this fashion? How stable is the Allan Block wall after years of freezing/thawing?
Thanks for the help.