You’ve got a cracked, tilted, or just plain tired concrete patio — and you’d love a deck there instead. Do you have to jackhammer out the old slab first? Usually, no. In many cases we build right over it, and it’s often the fastest, cleanest deck project there is. Here’s how it works.
The Short Answer
How We Build Over Concrete
Option 1: Sleeper system
For low-height situations, we fasten a grid of “sleepers” — pressure-treated framing — over the slab, then install composite decking on top. Water drains through the deck gaps and along the slab as it always did.
Option 2: Frame over the slab
When there’s more height to work with, we frame a conventional deck above the patio, supported on footings around it. The slab just becomes ground cover under the deck. Add DuxxBak waterproof decking and the space stays dry for storage.
What we check first
- Door threshold height — you need room for framing plus a board’s thickness, and code-compliant step-downs
- Slab condition — minor cracks are fine; major heaving means we bridge over it structurally instead of resting on it
- Drainage — the deck must not trap water against your foundation
- Ledger attachment — connecting safely to the house is the make-or-break detail on any deck
Why Homeowners Love This Project
- No demolition cost — concrete removal can run thousands of dollars and wrecks the lawn in the process
- Fast timeline — over-slab builds skip excavation, so they’re often done in days, not weeks
- Instant upgrade — a cracked gray slab becomes a warm composite living space, flush with your door instead of a step down into the yard
When Over-Building Isn’t the Move
If the slab has heaved badly, sits too high against your siding, or you’re dreaming bigger than the patio’s footprint, it can make more sense to design a full deck and ignore the slab entirely. That’s a design conversation, not a dealbreaker — and it’s exactly what a free on-site consultation settles in twenty minutes.
Turn That Slab Into a Living Space
We’ve transformed patios across Cleveland, Akron, and Medina into composite decks their owners actually use. Send us a photo of your patio and we’ll tell you straight whether over-building makes sense.
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