12:07PM | 03/26/01
Member Since: 03/25/01
3 lifetime posts
Hi. I'm looking to build a raised patio (under 3 feet high) off the back of my house. I'd like to use the Allan Block system. They hava a new residential stone (Europa collection) which looks more like real stone than the original series.

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.

Couple questions:

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.

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