







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Construction in The Woodlands, TX | Penhallow Remodeling Houston
We provide independent CGI window and door service across The Woodlands, handling everything from failed thermal seals to full impact-rated replacements. The one thing that makes our work here different is simple: we know how strict this community is about tree protection, architectural review, and matching original finishes. Call (254) 527-5340 for a free estimate on any CGI project.
CGI builds coastal-grade windows and doors engineered for hurricane zones, which makes them a strong choice for The Woodlands, where summer storms roll through hard and humidity never really leaves. We’re not a factory rep or an authorized dealer. We’re a General Contractor in The Woodlands that works on these products every season, which means we’ve seen how they actually hold up under village deed restrictions, clay soil, and afternoon heat that bakes west-facing glass. If you need a straight answer about what’s worth repairing and what’s worth replacing, that’s what we do.
Why The Woodlands Residents Choose Us for CGI Service

Trevor Nash grew up in the San Fernando Valley, where he learned early that a straight wall is harder to build than it looks. He studied construction technology at Los Angeles Trade-Technical College, then spent years on tract homes and full gut-renovations before bringing that experience to Houston. That background matters when you’re dealing with CGI products, because these aren’t off-the-shelf windows. Their coastal engineering tolerances are tight, and a sloppy install defeats the entire purpose of buying them.
We work on CGI’s premium door and window lines across The Woodlands every season. Independent experience that no factory rep can match. Our technicians are background-checked and uniformed, and we use OEM CGI hardware and glass whenever it’s still available. When OEM lead times stretch beyond three or four weeks, we’ll recommend a suitable aftermarket roller or gasket and tell you exactly what the tradeoff is before we order anything.
Styles & brands we work with







Common CGI Construction Problems We Solve in The Woodlands
- Weep hole blockages in Sentinel sills: Heavy summer downpours in The Woodlands can overwhelm the sill drainage on CGI Sentinel StormPro windows. When weep holes clog with pollen or pine debris, water wicks into the framing instead of draining out. We clear the channels, verify the sill slope, and replace any gaskets that have started to fail.
- Thermal bowing in MagnaView patio doors: West-facing exposures on village lots without mature shade trees get intense afternoon heat. CGI MagnaView doors can develop thermal bowing, which makes the panel bind against the frame. We adjust rollers, realign tracks, and check for glass seal failure before recommending a more involved fix.
- Roller wear in Targa multi-slide doors: Wooded lots in The Woodlands mean pine needle grit and pollen get into everything, including the roller tracks on CGI Targa doors. Rollers wear faster here than in less treed suburbs. We replace worn rollers with OEM parts when possible, and we clean and lubricate the tracks so the door glides again.
- Frame corner joint stress cracks on Estate windows: Expansive clay soil under slab foundations in The Woodlands shifts with moisture swings. CGI Estate windows with rigid frame corners can develop hairline stress cracks as that movement transfers through the wall. We inspect the joint, assess whether the crack is cosmetic or structural, and repair or replace accordingly.
- Failed thermal seals on south-facing glass: Humid mornings make seal failure obvious on The Woodlands homes. Condensation between panes means the insulating gas has escaped and the glass unit needs replacement. We source OEM CGI insulated glass units when available and handle the full swap without disturbing surrounding trim.
CGI Service in The Woodlands: What Local Conditions Mean for Your Equipment

Unlike neighboring Houston, The Woodlands’ village covenants require replacement windows and exterior doors to match the original architectural style and color palette. That’s not a suggestion. The Design Review Committee checks. So when a homeowner in Grogan’s Mill or Cochran’s Crossing needs new CGI windows, we frequently custom-order finishes and grid patterns to get the project past the DRC. You can’t just pick a standard white vinyl window off a shelf and call it done. Trevor puts it plainly: “Give me the straight story on what you need, and I’ll give you the straight number on what it costs.”
This is the only place that explains how CGI windows and doors actually perform under The Woodlands’ tree-protection covenants, clay soil shifts, and DRC aesthetic rules. Through our Bathroom Remodeling in The Woodlands, our crew also handles window work-like replacing four CGI Estate double-hungs on Chatsworth Court in Grogan’s Mill last August. The south-facing windows had failed thermal seals, letting afternoon heat build inside and causing visible condensation between panes on humid mornings. We matched the original bronze-clad frames and true-divided lite grids, handled the tree-protection fencing around a mature loblolly pine, and completed the swap in two days without trimming a single limb. That’s what compliant work looks like here.
CGI Models & Products We Service in The Woodlands
We service CGI Sentinel StormPro, the Estate Collection, MagnaView, and Targa by CGI lines. That covers impact windows, fixed and operable units, patio doors, and multi-slide systems. We repair before replacing unless the frame is compromised or the glass seal has failed beyond warranty. When OEM CGI parts are available, we use them. When they’re not, we’ll tell you what the aftermarket option is and whether it makes sense for your specific door or window. Our CGI sales & service work follows that same repair-first principle on every call.
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AfterCGI Service Pricing in The Woodlands

Window replacement in The Woodlands typically runs $4,500 to $15,000 depending on the number of units, frame material, and whether you need impact-rated glass. Full impact window installation ranges from $8,000 to $25,000, with the variance driven by custom grid patterns, DRC-mandated finishes, and the structural work required around existing openings.
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
What drives the number up or down here is specific: the size of the glass, whether you’re matching an existing bronze or champagne finish, and whether the opening needs reframing due to clay soil movement. Your free estimate includes a written line-item breakdown before any work starts. Call (254) 527-5340 to schedule a walkthrough.
Serving The Woodlands, TX - Our Local Coverage Area
We’re based in the The Woodlands 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 The Woodlands
Do I need Design Review Committee approval to replace my CGI windows in The Woodlands?
Yes, in most villages. The Woodlands requires replacement windows and exterior doors to match the original architectural style and color palette, and the DRC reviews exterior changes before work begins. We handle the paperwork and custom-order finishes and grid patterns that meet your village’s standards. Call (254) 527-5340 and we’ll verify what your specific covenant requires.
Will a pier-and-beam foundation shift affect my CGI sliding door’s operation?
It absolutely can. Pier-and-beam homes in The Woodlands move with seasonal moisture changes in the expansive clay soil. That movement can put stress on door frames and cause MagnaView or Targa panels to bind. We check roller alignment, track level, and frame squareness, then adjust or shim as needed rather than forcing a door that’s fighting the foundation.
Can you match the original grid pattern on my CGI windows without a custom order?
Sometimes. Standard grid patterns on common CGI models can be matched with factory inserts. But many The Woodlands homes have custom true-divided lite patterns or non-standard grid widths that require a factory order. We’ll tell you which category you fall into before you spend anything. Call (254) 527-5340 for a straight answer on your specific windows.
How do you handle tree protection when installing new CGI windows or doors?
Most The Woodlands villages require permits and replacement planting when trees are disturbed, so we take tree protection seriously. On the Chatsworth Court job in Grogan’s Mill, we set up tree-protection fencing around a mature loblolly pine and worked without trimming a single limb. We plan the work around the roots and branches, not through them.
My CGI Sentinel windows have water staining on the interior sill after heavy rain. Is it a product defect?
Not necessarily. Water staining on Sentinel sills often points to clogged weep holes rather than a manufacturing defect. When the drainage channels block with pollen or pine debris from The Woodlands’ tree cover, water backs up and wicks into the interior. We clear the channels, verify the sill slope, and replace gaskets if needed. If the frame itself is compromised, we’ll show you exactly where. Estimates are free.
Service Areas Near The Woodlands
We serve The Woodlands and surrounding communities across the north Houston metro. That includes The Woodlands service area, plus nearby work in Tomball, Spring, Conroe, and the wider Harris and Montgomery County corridor. For homeowners further south, we also provide CGI service in Houston and CGI service in Katy.
Book Your CGI Service in The Woodlands Today
Whether you need a single failed seal replaced or full impact-rated windows matched to your village’s DRC requirements, we’ll give you a written number before any work starts. Call (254) 527-5340 to schedule your free estimate. A real person answers, day or night.
Written by Trevor Nash, Owner at Penhallow Remodeling Houston, serving The Woodlands and the greater Houston area.












