ES Windows Home Additions & ADU Nationwide

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

We stock and install ES Windows-compatible systems for home additions and ADU projects in Boca Raton, with typical installed pricing from $45,000 to $130,000 for additions and $90,000 to $220,000 for detached ADUs. Most ES Windows orders arrive within 10-14 business days, and we coordinate delivery with framing completion so glass installation never holds up inspection scheduling. Boca Raton homeowners usually discover an ES Windows specification issue mid-project, when the permit-approved window schedule doesn’t match the rough opening dimensions after structural modifications, or when impact-rated requirements for Florida Product Approval change between design and build.

Call (754) 254-8065

Which ES Windows Models This Applies To

ES Windows manufactures three product tiers relevant to Boca Raton additions and ADUs: the ES-100 series (non-impact, vinyl-frame), the ES-5000 series (impact-rated, aluminum-frame with laminated glass), and the ES-8000 series (high-impact, thermally broken aluminum for coastal exposure). The model number is stamped on the glass spacer bar, visible when you open the sash and read the edge of the insulated glass unit. For additions tied to existing structures, the critical match is the frame depth: ES-5000 uses 3¼-inch frame depth, while many original Boca Raton homes from the 1980s and 1990s were built with 2¾-inch frames. That half-inch difference determines whether the window seats flush to interior drywall or requires jamb extension boards.

We source ES Windows through authorized distribution, though Rowan Construction Group Boca Raton is an independent service provider with no affiliation to ES Windows. For most Boca Raton projects, we specify OEM ES Windows rather than aftermarket equivalents because the Florida Product Approval numbers are tied to exact glass, frame, and anchorage combinations. Substituting a “compatible” unit often means re-submitting for permit revision, which adds two to four weeks in Palm Beach County.

Signs Your ES Windows Home Additions & ADU Is Failing

• Condensation between glass panes. The insulated glass unit’s edge seal has failed, which is common in Boca Raton’s high-humidity climate where daily thermal cycling stresses the spacer. ES Windows units use a warm-edge spacer, but south-facing elevations degrade faster due to UV exposure and salt air near the Intracoastal.
• Sash won’t lock or seal properly. The multi-point locking hardware has worn or the frame has twisted slightly during structural settlement. In additions where new slab meets old foundation, differential settlement often shows up first as racked window frames.
• Air whistling through closed window. The weatherstrip has compressed or the interlock between sash and frame has gapped. ES Windows’ pile weatherstrip lasts roughly 8-12 years in Boca Raton before the fin seal loses resilience.
• Cracked or delaminated impact glass. Impact-rated laminated glass can suffer interlayer separation after repeated stress, even without visible impact. Once the PVB interlayer clouds, the window no longer meets the Miami-Dade or Florida Building Code impact standard it was installed under.
• Frame corrosion or finish chalking. Coastal Boca Raton properties within two miles of the ocean see accelerated aluminum oxidation. ES-5000 and ES-8000 series use anodized or Kynar-painted finishes, but the sill pan and weep holes must remain clear or standing water initiates pitting at the frame base.

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Replacement Cost & What’s Included

The range depends on four factors: whether the project needs Florida Product Approval or just AAMA certification, the floor level (second-story requires scaffolding or lift rental in Boca Raton’s zero-lot-line neighborhoods), the interior finish repair scope after window removal, and whether the original installation used proper sill pan flashing or we need to open the wall to correct it. Under Clause 1 of the Haven Standard, every project receives a written price before any work starts, and no change proceeds without a signed change order. Our 365-Day Done Right Promise covers installation and hardware; ES Windows’ glass warranty runs 20 years for seal failure.

DIY or Call Us?

An owner can safely verify the ES Windows model number from the glass spacer bar and measure the rough opening width, height, and squareness with a tape measure and level. What goes wrong past that point: impact-rated windows in Boca Raton require Miami-Dade or Florida Product Approval documentation for permit final, and homeowner-supplied units often arrive without the NOA (Notice of Acceptance) packet attached. The installation itself demands proper sill pan integration with the weather-resistive barrier, which is where we find the most moisture damage in inspected failures. For second-story work, any ladder work near the eave line in Boca Raton’s afternoon lightning season is a risk we don’t recommend.

Measure twice, document everything, then build. If your ES Windows specification doesn’t match your rough opening, or if you’re mid-addition and the inspector flagged a product approval issue, call (754) 254-8065 to schedule your free estimate. We’ll review your permit set, verify the window schedule against the approved plans, and give you a written price before anyone picks up a tool.

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