Concrete slab sloped toward the house
When a new concrete slab slopes toward your home instead of away from it, water runs directly against the foundation rather than draining safely into the yard. Fixing major leveling errors usually requires breaking and replacing the incorrect section or applying a specialized leveling overlay, depending on the severity of the slope.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Rip out the tiles, score the concrete bed underneath, and screed a new layer
- 2Cut drainage into the concrete to direct water to a waste or pit
- 3shim up the shed to compensate
- 4break up the concrete and re-pour it
- 5build the shed level on top of the unlevel pad
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“come to find our concrete pad is visibly not level. It is at a slight slope. I’m not sure if this is standard. I would like to know what our options are for fixing it and what we should reasonably expect from him.”source ↗
“I also put a level on it and the bubble is all the way at the edge and very much not level”source ↗
“Landscaper has stuffed up levelling and edging on newly laid slab.”source ↗
“Run off is toward house vs away.”source ↗
“Slope is large, 8cm over 2.5m at back left edge.”source ↗
“Do I need to redo this complete or can we re-level slab and do tiling again?”source ↗
“I tried using a broom and a 4 ft plank bc I couldn’t find anything longer. Both are showing roughly 2 in. Is that a normal amount of sloping?”source ↗
“That’s what I thought but it’s pretty far from the house and it’s sloping towards the house along the natural sloping of my yard”source ↗
Where this came up
People with this problem also raised
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- 2Should I replace a deformed copper pipe before pouring concrete?