







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Bathroom Remodeling: The Houston Owner’s Guide
CGI bathroom remodeling in Houston typically runs $9,000 – $28,000 installed, depending on whether you’re replacing a worn shower surround or gutting the entire room to the studs. We regularly work on homes with CGI windows and doors, which means we know how CGI products handle Houston’s humidity and why proper flashing and substrate work matters before tile ever touches the wall. Most homeowners call us after they’ve noticed cracked grout, soft drywall near the tub, or a window that no longer seals correctly, and what starts as a small fix usually reveals water that’s been working its way into places it shouldn’t be.
We’re an independent remodeling contractor serving Houston, not affiliated with CGI. But we’ve installed and worked around enough CGI products to know what fails, what holds up, and what’s worth saving versus replacing.
Key Takeaways
- Full CGI bathroom remodeling in Houston runs $9,000 – $28,000; walk-in showers and tub-to-shower conversions run $3,500 – $12,000.
- CGI bathroom windows and doors fail most often at the sill and lower frame due to Houston’s humidity and driving rain.
- We give you a written price before any work starts and back every job with our 365-Day Done Right Promise in writing.
- Call (254) 527-5340 for a free estimate, a real person answers 24/7.
Which CGI Models This Applies To

CGI manufactures impact-rated windows and doors, and if your Houston bathroom has a CGI window above the tub, in the shower, or on an exterior wall with a door to a patio, that’s the piece we’re usually replacing or working around. The most common CGI product we see in bathrooms is the fixed or casement window, often from their Estate Collection or Classic line, which comes in sizes that don’t always match standard rough openings from big-box stores.
Here’s the gotcha: CGI windows are typically custom-ordered to the original opening, so if you’re retiling or moving a wall, the existing CGI window may not fit the new layout without reframing. The label on the frame will show the model number and glass type, usually etched or on a silver sticker on the inside track. If you’re replacing the window itself, we always recommend OEM CGI glass, because the impact rating and the local Miami-Dade or Texas windstorm certification is tied to that specific assembly. A generic aftermarket insulated unit won’t carry the same rating, and in Houston’s storm season, that rating is the whole reason you bought CGI in the first place.
Styles & brands we work with







Signs Your CGI Bathroom Remodeling Is Failing
- Discolored or soft drywall below the window. Water is seeping past the window flange or the weep holes are clogged. In Houston, the combination of long humid summers and occasional driving rain means a small seal failure becomes a mold problem faster than homeowners expect.
- Condensation between the glass panes. The seal on the insulated glass unit has failed. This isn’t a cleaning issue; the inert gas has leaked out, and the window’s thermal performance and impact rating are compromised.
- Grout cracking or falling out at the shower-to-tub transition. The tub or shower pan has shifted, which happens in Houston’s expansive clay soils, especially in areas around Meyerland where soil movement is a known issue. The flex cracks the grout and lets water reach the substrate.
- Musty smell that doesn’t go away. Water has been trapped behind tile or under the pan for weeks. By the time you smell it, the cement board or drywall behind the surface is already saturated and losing structural integrity.
- The window or door sticks when you open it. The framing has swelled from moisture or the structure has settled. In a bathroom, a sticking CGI door usually means the rough opening has moved and the threshold is no longer sealed.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included

In Houston, a full bathroom remodel with a CGI window or door replacement, new shower or tub, tile, vanity, and fixtures runs $9,000 – $28,000. If you’re only addressing the wet area, a walk-in shower installation runs $4,500 – $12,000, a tub-to-shower conversion runs $3,500 – $10,000, and a shower replacement runs $3,000 – $8,500. Vanity installation adds $800 – $3,000.
| Scope | Houston Installed Range |
|---|---|
| Full bathroom remodel (with CGI window/door work) | $9,000 – $28,000 |
| Walk-in shower installation | $4,500 – $12,000 |
| Tub-to-shower conversion | $3,500 – $10,000 |
| Shower replacement | $3,000 – $8,500 |
| Bathroom vanity installation | $800 – $3,000 |
What drives the number on a CGI bathroom job is the condition of the framing behind the tile, the size of the window or door being replaced, and whether we’re matching an existing CGI product or reworking the opening. You get a written price before any work starts, so the number on the estimate is the number on the invoice. No change orders unless you ask for something different. Every job is backed by our 365-Day Done Right Promise: if it’s not done right inside the guarantee period, we come back and make it right at no charge, including a free return visit if a repair fails.
DIY or Call Us?
You can safely check a few things yourself: look for water staining around the window frame, run a hand along the tile to feel for loose or hollow spots, and check whether the window’s weep holes are clogged with paint or dirt. Cleaning those weep holes is a five-minute job that prevents bigger problems. But if you’ve got soft drywall, visible mold, or water damage around a CGI window or door, that’s where DIY goes wrong.
Removing a CGI window without damaging the rough opening takes experience, because impact-rated windows are heavier and sealed differently than standard windows. And once you open up a shower wall in a Houston bathroom, you’re likely to find water damage to framing that needs a professional eye before it gets worse. If what you’re seeing makes you unsure, call us at (254) 527-5340. Trevor Nash will walk you through what we’re looking at and give you the straight number. Give me the straight story on what you need, and I’ll give you the straight number on what it costs.
FAQs

A properly installed CGI window or door should last 20 to 30 years in Houston, but the seal on the glass unit typically lasts closer to 15 to 20 years in our humidity. The frame can last longer if the flashing and weep system were done correctly. If you’re seeing seal failure or frame rot before the 15-year mark, there’s usually a flashing or drainage issue behind it.
Call (254) 527-5340 and we’ll tell you whether the problem is the product or the installation around it.
Yes, in many cases the frame can be saved and only the glass unit or the seal needs replacement. But if the frame has been sitting in water, repair often costs as much as replacement once you account for the labor to remove and reset it correctly. We’ll give you an honest comparison before you commit.
Call (254) 527-5340 for an exact quote, estimates are free.
Most full bathroom remodels in Houston take 2 to 4 weeks from demo to finished trim, depending on whether we find framing damage and whether the new window or door is a stock size or a custom CGI order. A tub-to-shower conversion with no window work can be done in about a week.
Call (254) 527-5340 and we’ll give you a written schedule along with the written price.
We don’t keep CGI inventory in a warehouse, because the products are made to order for each opening. What we do stock on the truck is everything we need to assess and prep the opening: flashing, sealants, PVC trim, and the tools to remove the old unit without damaging your framing. We also work with KraftMaid and Cambria for cabinetry and countertops, and we can source Silestone if that’s what your project calls for.
Call (254) 527-5340 and we’ll get your CGI window or door ordered while we handle the rest of the remodel.
Written by Trevor Nash, Owner, Penhallow Remodeling Houston at Penhallow Remodeling Houston, serving Houston and nearby areas.


