Quikrete Home Additions & ADU Nationwide

Quikrete Home Additions & ADU: The Fort Lauderdale Owner’s Guide

A home addition or ADU built on a Quikrete foundation in Fort Lauderdale typically runs $45,000 to $130,000 installed, depending on square footage, roofline tie-ins, and whether the existing slab is structurally sound. Most owners call us after they spot a crack running through the Quikrete slab, notice water pooling where it never used to, or get a notice from a home inspector about settlement. We stock and install Quikrete-compatible anchors, rebar, vapor barriers, and slab repair materials, and we can usually get a crew out to assess a failing slab within a day or two. This page covers what fails, what it costs to fix, and how to tell whether your Quikrete home addition or ADU project in Fort Lauderdale needs a repair or a full re-pour.

Call (754) 354-3720

Key Takeaways

• Installed cost range in Fort Lauderdale: $45,000 – $130,000 for a full addition on Quikrete; ADU construction runs $90,000 – $220,000.
• What fails first: slab edges, anchor bolts, and vapor barrier seams where Fort Lauderdale’s humidity and water table press on the concrete.
• Mason Remodeling Co Fort Lauderdale is an independent service provider. We are not affiliated with Quikrete, but we work with their bag mixes, anchors, and slab products daily.
• Written price before work starts, on every project, with a 365-day Done Right Promise in writing.

Which Quikrete Models This Applies To

Quikrete’s home addition and ADU work generally falls into two product families: their bagged concrete mixes (5000 PSI, Fast-Setting, and Crack-Resistant) and their anchoring systems (Quikrete Anchoring Cement, Quikrete High-Strength Anchoring Epoxy). The bagged mixes get matched to the slab spec written on the original permit, and the anchor system gets matched to the sill plate and bolt diameter already in the wall. The compatibility gotcha we run into most in Fort Lauderdale: older additions built before 2010 often used 3500 PSI Quikrete, and homeowners trying to patch with 5000 PSI mix get a patch that cures harder than the surrounding slab, which makes the crack transfer to the weaker concrete next to it. The patch doesn’t fail. The slab next to it does.

On the OEM-versus-aftermarket question for Quikrete specifically: Quikrete’s own anchors and epoxies are priced fairly for what they are, and we mostly use them because the engineering specs are published. Generic aftermarket anchors sometimes lack the exact zinc coating spec for Fort Lauderdale’s salt air, which shortens lifespan. If we do substitute, it’s only with a product that matches or exceeds the published spec, and we tell you before we buy it.

Signs Your Quikrete Home Additions & ADU Is Failing

• Hairline cracks that run in a straight line across the slab. This usually means the slab is shifting where the original control joint was cut too shallow or not cut at all. Fort Lauderdale’s rainy season makes this worse because water gets into the crack and expands the soil underneath.
• Doors and windows in the addition start to stick or bind. When a Quikrete slab settles unevenly, the framing above it racks slightly. You’ll feel it in the door before you see it in the slab.
• A hollow sound when you tap the slab edge. That’s a void underneath, usually from washout or soil settlement. Left alone in Fort Lauderdale, water keeps finding the low spot, and the void gets bigger.
• Anchor bolts that are loose or rusted at the base. Salt air near the coast eats zinc coatings faster than inland. A loose anchor means the wall is no longer tied to the slab the way the original engineering intended.
• Musty smell or dampness at the slab base inside the addition. The vapor barrier under the Quikrete has a seam that failed, or it was never installed right. In Fort Lauderdale’s water table, this shows up within a few years, not decades.

Replacement Cost & What’s Included

A full Quikrete-compatible home addition in Fort Lauderdale runs $45,000 – $130,000, and an ADU on Quikrete runs $90,000 – $220,000. The range depends on whether you’re repairing an existing slab and building up, or starting from a new pour. Here’s how the numbers break down in this market:

• Slab repair and leveling: $3,000 – $8,000 for crack injection, void fill, and re-anchoring.
• New Quikrete slab pour: $8,000 – $18,000 depending on square footage and rebar spec.
• Framing, roofing, and mechanical on the addition or ADU: the rest of the project cost, and the number moves with permit fees, impact requirements, and the roofline tie-in.

Every price we give in Fort Lauderdale is written, line-itemed, and delivered before work starts. What we quote is what it costs. The 365-Day Done Right Promise applies to the whole build: if anything we set isn’t right within a year of completion, we fix it at no charge. No change orders on our own work, no verbal estimates that grow.

DIY or Call Us?

What you can safely do: keep the slab edges clear of dirt and standing water, check the anchor bolts once a year for rust, and take photos of any crack you see so we can track whether it’s growing. What you should not do: attempt crack injection or slab leveling yourself. Quikrete slab repair involves drilling into structural concrete, and if you drill into a post-tension cable or a rebar mat, you turn a $3,000 fix into a much larger problem. We’ve seen it in Victoria Park more than once. Fort Lauderdale’s soil is also soft enough that a DIY leveling job can make the settlement worse. If you’re seeing any of the signs above, call (754) 354-3720 and we’ll send someone who can tell you what you’re actually dealing with. The evaluation is free.

FAQs