Boral Home Additions & ADU Nationwide

Boral Home Additions & ADU: The Boca Raton Owner’s Guide

We stock and install Boral-compatible components for home additions and ADU projects throughout Boca Raton, with typical installed pricing running $45,000-$130,000 for additions and $90,000-$220,000 for full ADU construction. Most Boca Raton homeowners discover their Boral system needs attention when the stucco cladding cracks at stress points, moisture intrusion appears at window-to-wall transitions, or the weep screed drainage plane fails after heavy summer storms. These issues rarely announce themselves dramatically; they show up as hairline fractures that widen through our humid wet season, or as interior drywall stains that trace back to a compromised water management layer.

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Which Boral Models This Applies To

Boral’s exterior cladding and moisture management systems span several product lines used in South Florida construction, and identifying your specific system matters for material compatibility. The Boral Drain-N-Dry rainscreen, Boral Stone Veneer with integrated drainage mat, and Boral TruExterior trim systems each attach to different substrate preparations and require distinct flashing details at terminations. Check the weep screed label (typically stamped along the bottom edge), the drainage mat manufacturer’s mark on the wall assembly, or the trim piece profile number if accessible. We also source compatible components from KraftMaid, Cambria, and Silestone for interior finish packages when the addition scope includes kitchen or bath buildouts.

OEM Boral components maintain the original fire rating and drainage specifications, but quality aftermarket equivalents exist for certain trim and fastening systems. The critical compatibility gotcha in Boca Raton’s coastal zone: Boral’s TruExterior poly-ash trim expands and contracts differently than fiber-cement alternatives, so mixing manufacturers at joint locations guarantees a callback. We specify the original material family in our written scope to prevent this mismatch.

Signs Your Boral Home Additions & ADU Is Failing

• Hairline cracking at inside corners and window heads. Boral’s stucco assemblies rely on a continuous drainage plane; when the water-resistive barrier laps fail or the weep screed clogs with debris, trapped moisture creates hydraulic pressure that fractures the finish coat from behind. In Boca Raton, we see this accelerate where roof runoff concentrates at wall intersections.
• Soft or stained drywall at exterior wall bases. This indicates the drainage plane is dumping water inside rather than out. The weep screed’s perforated flange should terminate clear of the foundation; if buried by landscaping or sealed with caulk by a previous owner, the system backs up.
• Trim pulling away from walls at fasteners. Boral TruExterior trim is dimensionally stable but unforgiving of overdriven fasteners or inadequate expansion gaps. The material does not absorb moisture like wood, so it will not swell back into place; gaps persist and worsen.
• Efflorescence on stone veneer surfaces. White mineral deposits signal water is moving through the Boral Stone Veneer assembly and evaporating at the surface. The drainage mat behind the stone may be compromised, or the mortar joints may have lost their water repellency.
• Musty odor in newly conditioned spaces. ADU conversions often enclose formerly exterior walls without verifying the original drainage plane integrity. Boral systems depend on air circulation behind the cladding; sealing everything tight without a conditioned cavity strategy traps humidity.

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Replacement Cost & What’s Included

For Boral home addition and ADU work in Boca Raton, our installed pricing breaks down as follows:

What drives the range: square footage, structural modification requirements (foundation, roof tie-in), and whether the existing Boral assembly can be selectively repaired or requires full removal. Our written quote itemizes the drainage plane inspection, substrate repair, Boral material specification by product line, and interior finish allowances. Under Clause 1 of The Haven Standard, that price is fixed before work starts; no change proceeds without a signed change order. Every project carries our 365-Day Done Right Promise and a documented photo record of each phase.

DIY or Call Us?

A homeowner can safely inspect the weep screed for debris blockage and verify that soil or landscaping has not buried the drainage exit. You can also photograph cracks and note their pattern (diagonal at openings versus horizontal at mid-wall) to help us diagnose the root cause before we arrive.

Where DIY goes wrong: Boral assemblies are integrated systems, and repairing the visible crack without addressing the drainage plane behind it guarantees recurrence. Cutting into a stucco wall to investigate requires knowing the electrical and plumbing layout, and working on ladders at second-story elevations carries obvious risk. More critically, improper flashing at window or door replacements in a Boral system can void the moisture warranty and channel water into wall cavities undetected for months. We recommend a professional evaluation for anything beyond surface cleaning and observation. Call (754) 254-8065 to schedule your free estimate.

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