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CGI Construction in Dallas, TX | Penhallow Remodeling Dallas
We’re Penhallow Remodeling Dallas, and as a General Contractor in Dallas, we provide independent CGI window, patio door, and related construction service across the area. The one thing that makes our CGI work here different is simple: we understand how Dallas’s expansive clay soil and brutal summer heat attack CGI frames, seals, and balances, and we price repairs and replacements in writing before we touch your home. If you need a straight answer on a failing CGI window or a Targa Series door that won’t slide, call us at (940) 204-5368.
Why Dallas Residents Choose Us for CGI Service

Our crew knows CGI’s thermally efficient window and patio door lines from the inside out. We’ve pulled apart and reinstalled more of them in Dallas slab homes than any independent shop we know of, and our work is backed by our own labor warranty, not a manufacturer badge. Trevor Nash, who owns Penhallow Remodeling Dallas, trained at Los Angeles Trade-Technical College and spent years doing everything from foundation repairs to Dallas Bathroom Remodeling and full kitchen gut-outs before bringing his crew to Dallas. His rule on every CGI job is the same one he’s always had: give you a number before picking up a tool. That’s the only way he knows how to start.
We carry OEM gaskets, balance shoes, and corner keys for current-model CGI windows and patio doors, and we keep a stock of common replacement parts in our Dallas shop so we’re not waiting on a distributor for every repair. And when we need to order something exotic, we tell you that too, with a real lead time, not a vague “soon.”
Want to see how we handle CGI sales & service across the metro area? That page explains our parts philosophy and warranty terms in detail.
Styles & brands we work with







Common CGI Construction Problems We Solve in Dallas
- Fogged or hazy glass on Estate Collection windows. Dallas summers routinely push past 100°F, and the UV load degrades butyl sealant faster than CGI’s coastal ratings anticipate. When a corner seal fails, argon leaks out and condensation gets between the panes. We can replace the insulated glass unit on many Estate Collection windows without pulling the whole frame.
- Targa Series patio doors that stick or warp. A sliding door that works fine in November and binds in August usually means the slab under it is moving. Dallas’s blackland prairie clay shrinks in dry heat and swells after rain, and an un-reinforced slab-on-grade home will flex enough to rack a patio door frame out of square within two seasons.
- Rusted balance springs in older Classic Collection single-hung windows. Years of North Texas humidity plus lawn irrigation overspray hitting the lower sash corrodes the balance springs until the window won’t stay open. We replace the balance assemblies and lubricate the track so the window operates like it should.
- Leaking frame corners on Estate Solutions picture windows. Hail is a fact of life in Dallas. When debris impacts the aluminum cladding, hairline cracks form at the frame corners, and the next rainstorm finds them. We repair or replace the cladding and reseat the corner keys before water gets into your wall cavity.
- Windows that have dropped or won’t lock after foundation repair. We see this constantly in Dallas. A homeowner levels the foundation, and suddenly three windows won’t latch. The frame positions changed when the slab moved. We realign sashes, replace worn latches, and shim the frames square again.
CGI Service in Dallas: What Local Conditions Mean for Your Equipment

Here’s something most national CGI dealers won’t tell you. Dallas permits for window and roof replacement in the inner-ring ranch belt require a drainage plan stamped for expansive clay. The same blackland prairie clay that cracks slabs also racks window frames out of square within two seasons. A random handyman skips the drainage plan entirely. Our specs account for it from day one, because if you replace a CGI window in a 1950s ranch on a post-tensioned slab without addressing the soil movement at the foundation line, you’ll be replacing that same window again in three years.
We saw exactly this on a 1963 ranch in Lakewood. The homeowner had four failed CGI Estate Collection double-hung windows where the bottom sash would drop shut on its own. That’s typical of broken block-and-tackle balances, but the real culprit was the post-tensioned slab heaving half an inch during the spring rains. We reframed the rough openings, installed new Estate Series windows with updated corner keys and low-E glass, and set a clay-moisture root barrier along the south foundation line to stop future movement. Two years later, every one of those windows still opens with two fingers.
CGI Models & Products We Service in Dallas
We work on all four major CGI product families: the Estate Collection, Estate Solutions, Classic Collection, and Targa Series. For current production units, we use OEM gaskets, balance shoes, and corner keys to maintain exact track tolerances. But when CGI’s parts backlog runs 8 to 12 weeks on obsolete Targa Series rollers or Estate Collection latches, we source better-engineered aftermarket replacements instead of leaving a Dallas family with a door that won’t lock for three months. Our honest stance is this: if the frame is square and the glass is clear, we repair. If the unit is 15-plus years old, has two failed seals, and the sashes are warped, replacement with a current CGI model or a comparable impact-rated brand is the better money.
See the difference
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AfterCGI Service Pricing in Dallas

Windows and patio doors in Dallas don’t fail on a convenient schedule. Knowing what a repair or replacement will run, before you commit to anything, is how we prefer to work. Here’s where common CGI jobs land:
| Service | Typical Range in Dallas |
|---|---|
| CGI Estate Collection window replacement (per opening) | $1,200 – $2,500 |
| Targa Series patio door replacement | $3,500 – $7,500 |
| Roof repair with CGI-compatible flashing | $400 – $1,800 |
The biggest cost drivers are frame size, glass package, and whether the rough opening needs reframing due to slab movement. A straight glass swap on a stable opening is the low end. A full-frame replacement with reframing and clay-moisture correction lands higher. Every estimate we write is free and puts the price in writing before work starts. Call (940) 204-5368 and we’ll give you a number you can hold us to.
CGI Construction in Dallas: FAQ
These are the questions Dallas homeowners actually ask about CGI work, answered by Trevor Nash and our crew.
Sometimes, but not always. If the door panel itself is warped but the frame is still square and seated, we can replace the panel and rollers only. If the slab movement has racked the frame, replacing just the panel gets you a door that slides poorly, and you’ll hate it in a year. We’ll show you what we’re seeing on your specific door before we recommend anything.
It can. CGI’s seal warranties are generally tied to the original installation and assume a properly prepared opening. When a Dallas home settles, the frame flexes, and the flexing is what kills the seal, not the heat by itself. Warranties also typically don’t cover damage from structural movement. If the warranty claim is worth pursuing, we can help with documentation; if it’s not, we’ll tell you before you spend months chasing a denial.
Most stock-size Estate Solutions casements arrive in 2 to 4 weeks. Custom sizes or unusual glass packages run 6 to 10 weeks. During hail season, lead times stretch, because every roofer and window shop in Dallas is placing orders at once. We tell you the lead time before you sign anything, and we don’t start the demo until the windows are in our shop.
Yes. On post-tensioned slab homes, we check the rough opening for racking before we set any window. If the opening is out of square beyond tolerance, we shim and reinforce the rough opening, and we run a drainage and moisture check along that wall line. A CGI window installed square, on a stable opening, will hold its performance for far longer in Dallas than one that’s fighting the slab from day one. Call (940) 204-5368 and we’ll walk your property and tell you what we’d do.
In most cases, yes. CGI’s Classic Collection bronze finish is one of the easier finishes to match, and we can order a new patio door with a matching exterior frame color. There can be slight variations from batch to batch, especially on an older door that has weathered for a decade, but it’s usually close enough that you won’t notice unless you’re staring at it. We’ll bring a finish sample before you commit.
If you’re comparing us to the big-box shops, read how we handle CGI service in Plano and CGI service in Irving. The same crews, the same write-it-down-before-we-start approach.
Service Areas Near Dallas
Our Dallas crew covers the whole metro. We’re in Dallas proper every week, from Lakewood to Oak Cliff to the M Streets. We also run jobs in Plano, Irving, Rowlett, Richardson, and Heath. Call (940) 204-5368 and we’ll tell you when we can get there. Our full Dallas service area page lists every city we cover.
Serving Dallas, TX - Our Local Coverage Area
We’re based in the Dallas area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Book Your CGI Service in Dallas Today
If a CGI window or patio door is failing in your Dallas home, don’t wait for the next dry season to make it worse. Call (940) 204-5368 and schedule a free estimate. We’ll show up on time, look at the actual condition of your frames and slab, and put the price in writing before any tools come out.
Written by Trevor Nash, Owner at Penhallow Remodeling Dallas, serving Dallas since 2004.












