Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Quikrete Home Additions & ADU: The Jacksonville Owner’s Guide
We regularly work with Quikrete concrete products in Jacksonville additions and ADU projects, from slab pours to footers, stem walls, and anchor points. A full home addition using Quikrete products in Jacksonville typically runs $45,000 to $130,000 installed, while an attached ADU with Quikrete foundation work falls in the $90,000 to $220,000 range depending on square footage, finishes, and site prep. Most owners discover something is wrong long after the pour: a crack widens at the corner of a new foundation, a stem wall shows efflorescence that won’t stop, or anchor bolts sit loose in concrete that cured too fast during a Florida afternoon.
The Cedarwell Care Promise matters here. Before we pour anything, you get a written price with every material named, including the Quikrete mix spec, the rebar schedule, and the labor broken into stages. No allowance line items that grow quietly. Graham Stein insists on that because a Jacksonville homeowner should be able to read the entire scope and know what their foundation costs before dirt moves.
Which Quikrete Models This Applies To
For home additions and ADUs in Jacksonville, the Quikrete products you’re most likely dealing with are Quikrete 5000 (a 5,000 PSI high-early-strength mix), Quikrete Crack-Resistant Concrete Mix, and Quikrete Fast-Setting Concrete Mix for anchoring posts and small pads. Each has a different working time in Florida heat. Quikrete 5000 gives you roughly 30 to 40 minutes of workability at 90 degrees, while Fast-Setting can start firming up inside 20 minutes when the sun is on the pour. That’s a real compatibility gotcha on Jacksonville job sites: if the mix is batched too wet to buy time, you lose compressive strength, and nobody notices until a crack appears or a header settles.
OEM Quikrete bags have the batch code printed on the side, not the face. Aftermarket or repackaged mixes are common at some Jacksonville suppliers, but the batch code is what tells you the mix was tested to spec. We buy Quikrete from the same regional distributors in Jacksonville, and every bag on our truck carries that printed batch line. For slab work, we specify Quikrete Concrete Mix (1101) at a 4-inch minimum depth with welded wire mesh or #4 rebar on 16-inch centers, which is what Duval County building inspectors want to see before they’ll sign the footer inspection. Elmstead Remodeling Jacksonville is an independent contractor, not affiliated with Quikrete, but we’ve poured enough of their product in this humidity to know which mixes cure well and which ones fight you in the Florida sun.
Styles & brands we work with
Signs Your Quikrete Home Additions & ADU Is Failing
- Diagonal cracks at corners of window or door openings. This usually means differential settlement, where one part of the slab is moving faster than another. In Jacksonville’s sandy soil, we see this when fill wasn’t compacted in lifts before the Quikrete pour.
- White powdery deposits (efflorescence) that return after cleaning. Water is moving through the concrete and carrying mineral salts to the surface. It’s a moisture path problem, not a cosmetic one, and it means water is getting under or behind the structure.
- Loose or tilting anchor bolts in the stem wall or slab edge. If the concrete around the bolts is crumbling or the bolts spin freely, the anchor embedment was compromised, often by a mix that was poured too dry or vibrated unevenly.
- Hairline cracks running parallel to a control joint but 3 to 6 inches away. That’s a sign the control joint was cut too late or too shallow. The slab is cracking where it wants, not where it was guided to.
- Water pooling against the foundation after rain. This is more of a site drainage issue than a Quikrete issue, but it will destroy a slab over time in Jacksonville’s afternoon downpours. We see it a lot in older Avondale and Riverside homes where lot grading has shifted over decades.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For a Quikrete-related home addition or ADU foundation repair or repour in Jacksonville, here is what we’re seeing:
- Full slab replacement for a 400 – 600 sq ft addition: $18,000 – $45,000
- Partial slab repair (crack injection, re-securing anchors): $2,500 – $8,000
- Stem wall rebuild or reinforcement: $6,000 – $15,000
- Complete home addition with Quikrete foundation, framing, and finishes: $45,000 – $130,000
- Attached ADU with Quikrete slab, small kitchenette, full bath: $90,000 – $220,000
Every quote includes the Quikrete mix named by spec, the rebar or mesh schedule, the demo and haul-away, the forming, the pour, the finish, and the cure time in writing. We don’t do change orders once the price is set unless you change the scope. The 365-Day Done Right Promise covers every completed project: if the slab cracks or the anchors fail after the job is done, we come back and make it right. You also get shoe covers and drop cloths during any interior work, and a photo of the clean-up before the crew leaves.
DIY or Call Us?
A small Quikrete patch job, like resetting a fence post or filling a stair crack, is something a careful Jacksonville homeowner can handle with a bag of Fast-Setting mix and a trowel. But foundation work under a home addition or ADU is a different animal. The forms have to be square to the inch, the rebar has to clear the form by exactly 3 inches, and the pour has to happen as one continuous lift so you don’t get cold joints. Get any of that wrong and you’re looking at tearing out a slab and starting over, which costs more than hiring it done right the first time. If the anchors are loose or the stem wall is compromised, that’s structural. Call us at (904) 643-6243 and we’ll come walk the slab with you before you buy a single bag.
FAQs
A properly poured and cured Quikrete slab in Jacksonville should last 50 years or more; what shortens that lifespan here is water intrusion and poor drainage, not the concrete itself. Call (904) 643-6243 and we’ll tell you exactly what condition your slab is in.
A hairline crack under 1/8 inch can usually be epoxy-injected and will hold fine; a crack wider than that, or one actively growing, often means the base under the slab is the problem, not the slab. The fix depends on what the crack is telling us, and we’ll give you a straight answer after a look.
Cure time for Quikrete 5000 is 7 days to reach structural strength; the full build after the slab passes inspection usually takes 8 to 14 weeks for a home addition or ADU in Jacksonville, depending on finishes.
We stock the Quikrete mixes we pour with on our own trucks, and we pull from the same Jacksonville regional distributors every time, so you never have to pick up pallets yourself. Every bag is on the job before the pour starts.
Written by Graham Stein, Owner, Elmstead Remodeling Jacksonville at Elmstead Remodeling Jacksonville, serving Jacksonville and nearby areas.
