CWS Home Additions & ADU Nationwide

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

We stock and install CWS-compatible components for home additions and ADU projects in Boca Raton, with typical installed pricing for addition work running $45,000-$130,000 and ADU construction at $90,000-$220,000 depending on foundation type, utility tie-ins, and roof integration. Most CWS-specific structural hardware, window systems, and connector kits are available through our supply chain with a written quote delivered before any work begins. Homeowners usually discover a problem when their addition’s roofline shows daylight at the seam, interior drywall cracks reappear after patching, or the ADU’s subfloor develops a springy spot where the CWS beam connector has corroded or pulled.

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Which CWS Models This Applies To

CWS, or Custom Window Systems, manufactures structural window and door systems commonly specified in Florida home additions and ADU builds for their HVHZ (High Velocity Hurricane Zone) ratings and impact certification. The product lines we encounter most in Boca Raton are the CWS 5400 Series impact windows, the CWS 7800 sliding door system, and the CWS Targa structural storefront framing used for glass walls in modern ADU designs. To identify your exact system, check the etched certification mark in the glass corner or the aluminum frame label; the series number, DP (design pressure) rating, and Miami-Dade NOA (Notice of Acceptance) number are what matter for matching replacement hardware.

The OEM-versus-aftermarket question for CWS is straightforward: the glazing bead, sash locks, and roller assemblies are often available through CWS distribution, but the structural pressure clips, header reinforcement channels, and custom jamb extensions are frequently faster sourced through our verified suppliers like KraftMaid for integrated trim packages or Cambria and Silestone for sill transitions. We document the exact NOA number on every quote so the replacement part carries the same wind-load certification as the original. A common compatibility gotcha in Boca Raton: the CWS 5400 Series used two different glazing gasket profiles between 2015 and 2019, and the wrong one will not seat properly in the retained frame, leading to water intrusion within a single rainy season.

Signs Your CWS Home Additions & ADU Is Failing

• Cracked drywall returns at window perimeters. The CWS frame is shifting independently of the rough opening, usually because the structural shim pack has compressed or the fastening schedule did not meet Florida’s 175-mph wind-zone requirement. The crack reopens within weeks of patching because the root movement continues.
• Condensation between impact glass panes. The CWS insulated glass unit (IGU) seal has failed, which in Boca Raton’s salt-air environment accelerates once the desiccant saturates. The glass is still impact-rated but no longer thermally efficient, and the visible moisture etches the low-E coating permanently.
• Sliding door rollers grind or the panel sticks in wet weather. The CWS 7800 stainless roller housing has corroded at the axle, a known issue when the weep holes clog with Boca Raton’s fine limestone dust and trap water against the bearing.
• Daylight visible at the addition roof-to-wall junction. The CWS header deflection clip has slipped or the thermal break has degraded, allowing the structural frame to settle and break the sealant bond at the critical air-barrier transition.
• Springy or uneven subfloor in the ADU. The CWS-specified LVL header or connector plate has delaminated or the hanger nail pattern has sheared, often from the humidity cycling that hits 85% regularly in Boca Raton summers and causes engineered wood to move more than solid sawn.

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Replacement Cost & What’s Included

What drives the range: the CWS part itself is rarely the dominant cost; it’s the access, the surrounding finish protection, and whether the repair triggers a re-inspection under Florida’s current building code. We deliver a flat written price before any work starts, itemized by line - part, labor, permit, and protection - so the number you agree to is the number you pay. Under Clause 1 of The Haven Standard, no change proceeds without a signed change order, which is why our projects finish within a few percent of the original quote. The 365-Day Done Right Promise covers the installation and the part; if the CWS gasket weeps or the roller binds, we make it right.

DIY or Call Us?

An owner can safely check the CWS label for the series and NOA number, clear weep holes with a pipe cleaner, and verify that interior drywall cracks are growing by marking the endpoints with pencil and dating them. What goes wrong with DIY: the CWS impact-rated frame is part of the building’s structural envelope, and any modification to the fastening pattern or pressure clip voids the Miami-Dade certification and your insurance coverage. The roller replacement on a 7800 door requires supporting the 200-pound panel safely; the IGU replacement demands clean-room conditions for the sealant bead or the new unit will fog within months. We are an independent service provider, not affiliated with CWS, and we carry the background-checked, uniformed crew and the documented photo record that Boca Raton building inspectors expect to see. Call (754) 254-8065 to schedule your free estimate.

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