Car Lift for Storage in Des Moines: Two Slab Setups Compared

A car lift for storage is only as good as the concrete underneath it, and we learned that lesson years ago with an independent shop owner south of Des Moines who wanted a second bay for stacking customer vehicles overnight. He had two garage bays to choose from, and the difference between them came down to slab thickness and rebar, not the lift itself. We walked both floors with him, and the story of that visit is the best way to explain what actually matters when you’re shopping for a car lift for storage instead of a service lift. If you’re weighing the same decision, we can help you sort it out before you sign anything.

Bay One: The Thin Slab With No Rebar

The first bay this shop owner showed us was an older addition poured sometime in the 1980s, roughly three and a half inches thick with no rebar mat and no visible mesh when we checked the edge at the garage door threshold. That slab had held up fine for parking and light foot traffic, but it was never engineered to anchor a two-post lift carrying a stored vehicle for weeks at a time. We see this constantly in older Des Moines metro buildings that were built as simple storage bays and later got pressed into service work.

We told him straight up that a car lift for storage still needs anchor bolts sunk deep enough to hold under load, and a thin unreinforced slab like that one is a real risk. Anchors can pull loose, the slab can crack radially from the post base, and in the worst case a lift shifts under an uneven load. Most manufacturers, including the brands we install, spec a minimum of four inches with proper reinforcement for two-post equipment, and that bay didn’t clear the bar. We recommended he either pour a new pad in that bay or shift his storage plan to the other side of the building.

Bay Two: Four-Inch Slab With Rebar Mat

The second bay had been poured more recently, four inches thick with a rebar mat tied in during the pour, and it passed our walk-through without hesitation. This is the baseline we look for before we’ll install a car lift for storage on any slab, whether it’s a two-post, four-post, or mobile column setup. Rebar spreads the load across a wider area of concrete instead of concentrating stress right at the anchor point, which matters a lot when a vehicle sits parked on the lift for extended periods rather than being raised and lowered all day for service work.

We drilled a test hole to confirm depth before committing to the install date, because guessing at slab specs from a customer’s memory of the pour is how jobs get delayed or lifts get damaged. Once we confirmed it, we scheduled the crew, and that bay became his dedicated car lift for storage location, freeing up his main service bay for the brake work and rotor swaps that pay the bills every day.

Why Storage Use Changes the Math

A lift used purely for storage sits loaded far longer than one cycling through daily service work, and that changes what we look at when we evaluate a slab and a location. A brake and rotor bay might raise and lower a vehicle a dozen times a day, but the load only sits at height for a few minutes at a stretch. A storage lift can carry that same weight for days or weeks without coming down, which means the anchor bolts and the concrete around them are under sustained stress the whole time.

That’s why we push customers using a car lift for storage to be even more conservative about slab quality than someone buying a lift purely for turning brake jobs quickly. We’d rather tell a shop owner in the Des Moines metro to wait two weeks and pour a proper pad than install on marginal concrete and get a call six months later about a lift that’s shifted. It costs less to fix upfront than after a vehicle has been sitting on it.

Two-Post vs. Four-Post for a Storage Bay

For this particular shop, we ended up recommending a two-post lift because his bay was tight and he needed floor clearance for a jack when servicing whatever was parked underneath. A four-post drive-on lift is simpler to load unattended and doesn’t require lift points on the vehicle, which makes it a popular choice for a car lift for storage when the owner just wants something parked up and out of the way with minimal fuss.

But four-post units carry their own footprint and weight considerations, and they still need a solid slab, just distributed across four columns instead of two. We walk every customer through both configurations before they buy, because the right answer depends on ceiling height, whether you need under-vehicle access while it’s stored, and how often you’ll be swapping which vehicle sits up top. Neither option is universally better — it’s about what your bay and your workflow actually need.

Ceiling Height and Clearance in Older Buildings

Des Moines metro shops often occupy buildings that predate modern lift equipment, and ceiling height catches people off guard more than they expect. A two-post car lift for storage needs enough overhead room for the vehicle plus the lift arms at full rise, and older service bays sometimes have ductwork, sprinkler lines, or low trusses that weren’t part of the original planning conversation. We measure this on every site visit before quoting, because nobody wants a lift installed only to find out it can’t reach full height.

We’ve also run into shops where the ceiling is tall enough but a support beam sits right where the lift’s crossbar needs to travel. In those cases we look at repositioning the bay footprint slightly or considering a low-rise or mid-rise alternative if full-height storage isn’t strictly necessary. It’s a conversation worth having before the concrete work even starts, because moving a planned location six inches can solve a clearance problem that would otherwise force a redesign.

Forklifts, Freight, and Getting the Lift Onsite

Once the slab is right, the next practical question we get is about delivery. Freight carriers drop lift equipment on a truck, and someone needs a way to get the crated columns and crossmembers off the trailer and into the bay. We ask every customer up front whether they have a forklift onsite, because that single detail changes how we schedule the crew and whether we need to bring extra equipment ourselves.

Shops that regularly move engines, transmissions, or heavy parts around often already have a forklift, which speeds things up considerably. Others don’t, and that’s fine too — we just plan for it. We also confirm whether there’s a loading dock or if the truck needs to unload at grade, since that affects how the crate gets positioned near the final bay. None of this holds up a car lift for storage installation as long as we know about it during scheduling instead of the morning the truck shows up.

What We Check Before We Schedule the Install

Before we ever put a date on the calendar, we walk the site and check slab thickness, look for control or expansion joints running through the planned mounting footprint, verify ceiling clearance, and ask about power availability if it’s a hydraulic two-post that needs a dedicated circuit. Expansion joints matter more than people expect — an anchor bolt too close to one can compromise the hold even on an otherwise solid four-inch pour, so we sometimes shift the footprint a foot or two to land the posts on clean concrete.

We also talk through timeline. If a customer needs epoxy flooring done first, we tell them to let that cure completely before we anchor anything, since epoxy coatings can interfere with anchor bond strength if the install happens too soon. Getting this sequence right the first time is what separates a car lift for storage that lasts twenty years from one that needs re-anchoring in year three. We’d rather spend an extra hour on the walk-through than rush a job that has to be redone.

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