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Discussion Starter · #1 ·
I'm at the point of building my deck extention that I am wondering

#1 how I will build the back wall/foundation to the garage underneath the deck and

#2 how I will waterproof under the stairs so I can have storage there seperate from the garage.

I will post some better pictures tomorrow.





 

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Discussion Starter · #3 · (Edited)
The garage is 12' wide and I want to put a 36" door in the corner under the stairs landing. you can see in the pic where I layed out a 12' 2x4 to show where the wall will be. With the stairs leading down there will be some room for storage and I would like to build a wall there with a door. How would I make the stairs so now water gets to the storage underneath?



















 

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Discussion Starter · #6 · (Edited)
Kemp, Yes the top of the deck will have a fiberglass resin professionally installed on top of 3/4" tung and groove plywood. I have a 2% slope leading away from the house.

Gbar, the retaining wall is 8" thick and very solid It was originally desinged to hold the deck up, I am just extending the deck 12' further than the original. The studs are 2x6's 8" oc The joists are doubled 2x10's at 16"oc the house side wall is 2x4's at 8" oc to support my 2200lbs hot tub which will be placed closer to the retaining wall side as per instructions from an engineer. I have not installed all the concrete fasteners in the sill yet.


The wall I will be building will not be load bearing at all. I have now broken the concrete and will be putting a small retaining wall to support the 2x4 wall and 36" door I will be putting in. How deep I should go with the footing is what I am wondering. Temperatures get down to about 20 deg. F in the winter at the coldest. I will also put a footing for a 4x4 treated post to hold the corner of the stair landing.








 
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