Atlas Home Additions & ADU Nationwide

Atlas Home Additions & ADU: The Pompano Beach Owner’s Guide

Rowan Construction Group Pompano Beach stocks and installs Atlas-compatible structural components, hardware, and finishing systems for home additions and ADU projects, with typical installed pricing in the $45,000-$130,000 range for full additions and $90,000-$220,000 for detached ADUs. We carry Atlas beam connectors, post bases, and lateral bracing hardware on our trucks, and most Atlas part replacements can be sourced and installed within the project timeline. Most Pompano Beach homeowners discover an Atlas component issue when they see rust streaking at connection points, feel movement in a recently added floor, or notice gaps opening where the addition meets the existing structure after our humid summers.

Call (754) 714-6540

Which Atlas Models This Applies To

Atlas produces several product lines relevant to residential additions and ADUs, and identifying the right series matters because the hardware dimensions and load ratings differ. The Atlas Mira series uses 4×4 and 6×6 post bases with a 12-gauge steel skirt and a 1-inch standoff height, while the Atlas Summit line steps up to 6×6 and 8×8 configurations with a 2-inch standoff and heavier gauge steel for two-story additions. Check the stamp on the post base flange or the laser-etched marking on beam connectors - the series name and the ICC-ES report number should be visible. If the stamp is corroded, measure the post dimension and the standoff height; mixing a Mira post base with a Summit-spec beam will create a load-path mismatch that Pompano Beach’s wind-load requirements won’t pass.

We source OEM Atlas hardware through authorized distributors, and we also stock Simpson Strong-Tie equivalents where the spec matches - the Simpson ABU66Z, for instance, substitutes directly for the Atlas Summit 6×6 post base in most Broward County permit applications. Grant Rowan keeps a cross-reference sheet in his truck from years of matching hardware to existing conditions in Pompano Beach’s older neighborhoods, where original Atlas specs sometimes predate current series names.

Signs Your Atlas Home Additions & ADU Is Failing

• Rust streaking at post bases or beam connectors. Pompano Beach’s salt air accelerates corrosion on the zinc coating of Atlas hardware, especially within a mile of the Intracoastal. Once the coating breaches, the steel beneath loses section fast, and the connection’s load rating drops below code minimum.
• Visible gaps between the addition and existing structure. This usually means the Atlas lateral bracing hardware has slipped or the anchor bolts have elongated in the sill plate. The gap widens during our summer thunderstorms when wind pressure cycles the connection.
• Bouncy or spongy floors in the added space. Atlas beam hangers are rated for specific joist spans and loads; if a previous installer undersized the hanger or used the wrong fastener pattern, the connection deflects more than the 1/360 limit the Florida Building Code allows.
• Cracks in drywall at addition tie-in points. These follow the stud bay pattern and indicate the Atlas connector is allowing differential movement between the original structure and the new framing. In Pompano Beach, this often shows up first on the west-facing wall after afternoon sun expansion.
• Doors or windows in the addition that bind seasonally. When Atlas post bases settle or beam connectors rotate, the framed opening goes out of square. The binding gets worse in our wet season when the wood moisture content spikes.

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Replacement Cost & What’s Included

The range depends on access (crawl space vs. open framing), whether the original concrete footing needs modification, and how many connections have degraded. Under Clause 1 of the Haven Standard, we deliver a written line-item price before any work starts - every part number, every labor hour, every permit fee. The 365-Day Done Right Promise covers the installation, and we pull all permits and pass all inspections as a standard step, not an extra charge.

DIY or Call Us?

An owner can safely inspect Atlas hardware for surface rust, measure standoff heights, and photograph stamp marks for identification. What goes wrong in DIY is almost always the load-path calculation: a post base that looks right may be rated for half the actual load once you factor in Pompano Beach’s 170-mph wind speed requirement and the tributary area of the roof above. We’ve found homeowners who installed the correct Atlas part but with the wrong fastener schedule - using ten 16d nails where the spec calls for twelve - and that shortfall fails inspection every time.

Concrete cutting for post base replacement involves silica dust and pinch hazards; beam work requires temporary shoring to hold the load while the connector is swapped. We don’t recommend either as a first project. Call (754) 714-6540 and we’ll assess what’s actually failing, match the right Atlas or equivalent spec, and quote it in writing before anyone picks up a saw.

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