Boral Home Additions & ADU Nationwide

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

We stock and install Boral-compatible structural components, fasteners, and finishing systems for home additions and ADUs in Fort Lauderdale, with installed project ranges typically running $45,000-$130,000 for additions and $90,000-$220,000 for detached ADUs. Most Boral material inquiries we see involve either moisture intrusion at the sheathing-to-foundation transition or fastener corrosion where the coastal salt air meets the substructure. If you’re seeing cracked veneer, soft spots at the sill plate, or separation at the Boral Versetta Stone or Boral ProStone interface, the underlying issue is usually water management, not the surface material itself.

Call (754) 254-7676

Which Boral Models This Applies To

Boral’s residential cladding and structural lines have shifted over the past decade, and the part you need depends on the vintage. Versetta Stone, the mortarless stone panel system, uses proprietary corner panels and starter strips that are not interchangeable with Boral ProStone’s traditional wire-mesh lath system. We also see frequent calls for Boral TruExterior trim and siding, a poly-ash composite that expands and contracts differently than fiber cement or vinyl in Fort Lauderdale’s humidity cycles.

To identify your system, check the back face of any loose panel for the molded Boral logo and date stamp. Versetta Stone panels measure roughly 36 inches wide by 8 inches tall with an integrated fastening flange; TruExterior trim boards come in 5/4 and 1-inch nominal thicknesses with a smooth or wood-grain face. ProStone uses individual stone units applied over metal lath, so there is no “panel” to remove.

Rowan Construction Group Fort Lauderdale is an independent service provider, not affiliated with Boral. For OEM-equivalent fasteners and trim, we source through Boral-authorized distributors; for structural repairs where the Boral system has failed due to improper flashing, we spec compatible solutions from KraftMaid, Cambria, and Silestone where those trades intersect with the addition or ADU envelope.

Signs Your Boral Home Addition or ADU Is Failing

• Soft or discolored sheathing behind Boral panels. In Fort Lauderdale, this usually traces to a missing or corroded drip edge at the roof-to-wall intersection. The Boral panel itself sheds water fine; it’s the substrate behind that rots when bulk water gets past the flashing. We find this most often in Victoria Park, where 1950s-era ranch additions were later wrapped with newer cladding without updating the original flashing.
• Cracking or spalling at the Boral stone-veneer surface. ProStone applied over wood-frame walls without a proper drainage mat will trap moisture. The freeze-thaw cycle is minimal here, but the daily humidity swing from 65% to 90% does similar damage over five to seven years. The veneer delaminates from the lath, and pieces begin to sound hollow when tapped.
• Gaps opening at trim joints, especially on south- and west-facing walls. TruExterior moves with temperature more than the marketing suggests in full Fort Lauderdale sun. Boards installed too tight to abutments buckle; boards left with insufficient gap show open joints after two or three summers. The fix is rarely the board itself, it’s the fastening pattern and the gap calculation.
• Rust streaks bleeding through light-colored Boral panels. This indicates galvanized fasteners losing their zinc coating to salt air. Standard decking screws or roofing nails will fail in 18-36 months within a mile of the Intracoastal. We spec 316 stainless or HCR (high corrosion resistant) fasteners for any Boral installation east of Federal Highway.
• Interior drywall staining on addition walls that share a roofline with the original structure. The Boral system is rarely the leak source. More often, the original home’s fascia or the addition’s tie-in flashing was not stepped properly. Water runs the rafter line and exits inside, while the Boral exterior looks intact. We document this with thermal imaging before touching any cladding.

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Replacement Cost & What’s Included

For a Boral-clad home addition or ADU in Fort Lauderdale, partial remediation of failed substrate, fasteners, and affected panels typically falls within the $45,000-$130,000 range for attached additions, or $90,000-$220,000 for detached ADU construction where we’re building from slab to finish. The spread depends on whether we’re repairing a localized failure (one wall plane, corrected flashing) or rebuilding the envelope after prolonged water damage.

Our written quote breaks out: demolition and disposal of compromised substrate; structural repair to framing if rot has penetrated; weather-resistant barrier replacement; fastener spec upgrade to coastal-grade; Boral material matching by lot where possible; and finish integration with existing trim. Under Clause 1 of the Haven Standard, that price is fixed before work starts. No change order moves forward unsigned, which is how we’ve kept 4,000-plus projects within a few percent of the original number since 2007.

The 365-Day Done Right Promise applies to all Boral repair and replacement work. Our documented photo record, standard on every visit, shows sheathing condition before it’s covered, fastener placement, and final sealant joints. You leave with the images, not just our word.

DIY or Call Us?

There’s a safe middle ground here, and then there’s the point where you need a crew. A homeowner can walk the perimeter with a screwdriver, sounding for hollow spots behind stone veneer and noting rust streak locations. You can also check the Boral website for your specific panel or trim profile to confirm the product line. What you should not do is remove panels to inspect sheathing without knowing what’s load-bearing, or attempt to re-fasten TruExterior without understanding the expansion gap requirements per Boral’s installation manual.

Structural repairs behind cladding involve temporary support, proper flashing sequence, and code-compliant weather barriers. In Fort Lauderdale, that also means TAS-100 wind-driven rain compliance for any addition envelope work. We’ve seen well-meaning DIY repairs that passed the eye test but failed inspection because the WRB lapping sequence was reversed. Call (754) 254-7676 and we’ll scope it properly, with a written price before any work starts.

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