







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Construction in Sunnyvale, TX | Bradford Remodeling Co Dallas
We provide independent CGI service across Sunnyvale, Texas, from impact-rated window replacements to full home additions and garage conversions that incorporate CGI products. Our crews know the difference between a CGI Sentinel unit and an Estate Collection door, and we understand what Sunnyvale’s clay soil and old well casings do to aluminum framing over time. That combination matters. Call (903) 326-8963 for a free estimate on any CGI construction project in Sunnyvale.
One thing worth stating up front: Bradford Remodeling Co Dallas is an independent CGI service provider. We are not manufacturer-affiliated, not authorized, and we don’t pretend to be. That independence lets us evaluate your windows, doors, or storefront honestly, compare repair against replacement without an agenda, and source parts based on what actually performs, not what a corporate program tells us to sell. We’ve maintained CGI’s construction lines across Sunnyvale’s evolving code landscape, from legacy agricultural structures that predate current building codes to new subdivisions that have to meet them.
Why Sunnyvale Residents Choose Us for CGI Service

Sunnyvale isn’t Mesquite or Forney. The town’s transition from rural farmland to a DFW bedroom community created a specific set of conditions for any contractor touching windows, doors, or structural framing. Homes built on multi-acre estates from the 1980s onward sit next to newer tract developments. Expansive clay soil moves under both. As a General Contractor in Sunnyvale, we work here regularly enough to know which neighborhoods tend to see frame racking, which older homes still carry abandoned well casings, and what hail season does to aluminum cladding.
Curtis Lane, our owner, picked up his first framing hammer in a residential carpentry program at Los Angeles Trade-Technical College before running crews across Dallas for nearly two decades. He’s seen enough 1950s plaster and shifting slabs to know that a window problem is rarely just a window problem. That’s why our CGI service always starts with the substrate, the rough opening, and what’s happening underneath. We bring OEM-compatible parts, document every finding, and give you a written price before any work starts.
Styles & brands we work with







Common CGI Construction Problems We Solve in Sunnyvale
- Foundation movement from clay soil. Sunnyvale’s heavy clay expands and contracts dramatically with moisture changes. That movement shifts window and door frames. We frequently realign or reframe CGI Estate Collection units that have started binding or letting air through because the rough opening moved underneath them.
- Hail damage to aluminum cladding. North Texas hail storms, particularly in spring, dent and crack CGI aluminum cladding. The damage isn’t always obvious from the ground. Once water gets behind the cladding, it tracks to weep holes and begins corroding the track from inside. We replace damaged panels and re-seal before that happens.
- Corrosion from old well water. Sunnyvale’s transition from well water to municipal supply left many homes with hard water residue inside the CGI weep holes and track assemblies. We see older CGI units with track failure caused by years of mineral buildup. If the frame is sound, we strip and service the track. If the corrosion has compromised the extrusion, we replace it.
- Racking near improperly decommissioned wells. Abandoned wells that were never properly plugged can create soil voids near foundations. When a CGI window or door frame sits within a few feet of one, the void shifts the frame over time. We stabilize the adjacent framing and correct the opening before re-setting the unit.
- Thermal failure in older storefront systems. Commercial buildings near Lake Ray Hubbard deal with humidity and temperature swings that stress older CGI storefront and curtain wall systems. Failed thermal breaks show up as condensation between panes or frost on interior aluminum in winter. We assess whether a reglaze or a full TDL upgrade makes sense.
CGI Service in Sunnyvale: What Local Conditions Mean for Your Equipment

Sunnyvale has a construction quirk that contractors from Garland or Dallas rarely think about, and it directly affects how CGI windows and doors should be installed here. The town’s transition from well water to municipal supply left hundreds of older properties with abandoned or redundant wells that state code now requires to be properly decommissioned before new construction begins. That requirement isn’t bureaucratic paperwork. A well casing that was never grouted or capped creates a direct path for subsidence, and when a new CGI window or sliding door goes in near one, the frame eventually racks.
On Barnes Bridge Road, we replaced a 12-foot CGI Estate sliding door that had buckled after years of foundation movement near an old well casing. Our crew decommissioned the well per current code, poured a new post-tension slab section, and installed a thermally broken TDL unit. It now glides with two fingers. That job taught us to check Sunnyvale plat records for legacy wells before we ever cut a rough opening. Most contractors miss it. We don’t.
CGI Models & Products We Service in Sunnyvale
We service the full CGI construction lineup you’re likely to find in Sunnyvale homes and commercial buildings. That includes the CGI Sentinel series of impact-resistant windows, common in newer builds where storm protection is specified. The CGI Estate Collection, custom wood and clad windows and doors, shows up frequently on larger estate properties built since the 1980s. We also maintain CGI commercial storefront and curtain wall systems and the CGI TDL series, the thermally broken aluminum line that solves the condensation and energy loss problems older aluminum framing creates.
On parts, our policy is simple. We use OEM CGI parts for critical seals, hardware, and glazing components where warranty and performance matter. For discontinued trims and extrusions that CGI no longer produces, we source exact-match aftermarket extrusions rather than telling you the only option is full replacement. We keep common Sunnyvale-specific hardware in local supply, which shortens turnaround when a hail season hits and twenty homeowners on the same street suddenly need cladding panels replaced. For those interested in the brand itself, see our CGI sales & service page for the full picture of how we approach these products.
See the difference
Before
After
Before
After
Before
AfterCGI Service Pricing in Sunnyvale

Pricing varies by scope, and we don’t give vague ranges. Here are the numbers for the three CGI construction services Sunnyvale homeowners request most:
| Service | Price Range |
|---|---|
| Window Replacement (CGI Sentinel or Estate) | $4,500 – $15,000 |
| Home Addition (including CGI windows/doors) | $45,000 – $130,000 |
| Garage Conversion (including CGI openings) | $30,000 – $80,000 |
What drives the cost: existing frame condition, whether a well decommissioning is required, how much soil correction the slab needs, and which CGI product line you choose. Every estimate we give in Sunnyvale is written, line-item, and priced before work starts. No number moves at the door. Call (903) 326-8963 for an exact quote on your project. Estimates are free.
Serving Sunnyvale, TX - Our Local Coverage Area
We’re based in the Sunnyvale area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – CGI Construction in Sunnyvale
Sunnyvale’s heavy clay soil expands when wet and contracts during dry spells, which moves foundations and the window frames anchored to them. Over time, that movement racks CGI frames, breaks seals, and causes binding. We address the opening before we re-set the unit, because replacing a window into a frame that’s still moving doesn’t solve anything. Call (903) 326-8963 for an inspection.
Yes, if the glass is intact and the damage is limited to the aluminum cladding or frame components. We replace dented or cracked panels with OEM CGI cladding where available, re-seal the assembly, and verify the weep system still drains. If the hail compromised the seal or cracked the glass edge, full replacement is the honest call. Call us for a free evaluation.
Yes. When we handle our Kitchen Remodeling in Sunnyvale or build a home addition and a legacy well casing sits within the construction footprint or near planned window and door openings, we handle the decommissioning as part of the scope. That includes proper grouting, capping, and documentation. Skipping this step is how you get soil voids and racked CGI frames a year later.
A properly installed CGI sliding door should last 20 to 25 years or more in North Texas, provided the track is maintained and the substrate underneath stays stable. In Sunnyvale specifically, foundation movement and old well casings shorten that lifespan when the rough opening fails before the door does. Our 365-Day Done Right Promise covers the installation for a full year after completion, which is rare in this trade.
Replace when the aluminum extrusion itself is compromised, the thermal break has failed, or the framing no longer meets current code for its location. Repair makes sense when the glass is sound and the frame can be serviced without structural work. We’ll give you our straight recommendation, not the one that pads the invoice. Call (903) 326-8963 for a written assessment.
Service Areas Near Sunnyvale
Bradford Remodeling Co Dallas serves Sunnyvale and the surrounding communities. If you’re in CGI service in Dallas, we work there daily. The same goes for CGI service in Garland. We also take projects in Mesquite, Forney, Rowlett, and the broader Sunnyvale service area. If you’re within a short drive of Sunnyvale, call us.
Book Your CGI Service in Sunnyvale Today
Straight number, real scope, no surprises on delivery day. Call (903) 326-8963 to schedule your free CGI estimate in Sunnyvale. We answer live, every time.
Written by Curtis Lane, Owner at Bradford Remodeling Co Dallas, serving Sunnyvale and the Dallas metro since 2004.











