CGI Window Replacement Nationwide

CGI Window Replacement: The Houston Owner’s Guide

CGI window replacement in Houston typically runs $450 – $1,400 per window installed, depending on the series, glass package, and frame condition. We stock CGI-compatible sashes, balance systems, weatherstripping, and hardware on the truck, and most single-window swaps are done in one visit. The way most Houston owners find us: a window that won’t stay up, a crank that spins without moving the sash, or condensation fog between two panes of glass that never clears. That last one means the insulated glass unit has lost its seal, and with Houston’s humidity cycling from swampy mornings to AC-dry afternoons, a failed seal shows up fast here.

Call (432) 278-2282

Which CGI Models This Applies To

CGI’s residential product lines in this market break down into three families: the Sentinel series (impact-rated aluminum, common in newer Houston builds within 50 miles of the coast), the Estate series (vinyl-frame impact windows), and the older Series 950/960 single-hung and horizontal sliders you’ll still find in homes built in the 1990s and early 2000s around Meyerland, Spring Branch, and Clear Lake. Each series uses different balance tensions, shoe widths, and lock geometries. A Sentinel sash will not drop into an Estate frame, even if the rough opening matches.

To identify what you have, look for the AAMA certification sticker on the interior frame or the etching in the corner of the glass. It will list the series name and a manufacturing date code. If the sticker is gone, measure the visible glass width and height in quarter-inch increments and snap a photo of the corner joint profile. That gives us enough to match it before we ever show up.

On OEM versus aftermarket: for glass, we use CGI-authorised replacement units or exact-spec IGUs from suppliers who cut to CGI’s thickness and spacer requirements. For wear parts like balances and rollers, quality aftermarket components from Caldwell or Truth match or exceed the original spec, and they keep the job from dragging out while we wait on a manufacturer shipment. We’re an independent service provider, not a CGI dealer, so we match the part to the window, not the window to whatever is on hand.

Signs Your CGI Window Replacement Is Failing

• The sash slams shut or won’t stay open. The block-and-tackle balance or spiral balance inside the side jamb has lost tension or snapped. This happens faster in Houston because heat accelerates coil fatigue, especially on west-facing windows that bake from 2 PM to sunset.
• Fog or mineral haze between the glass panes. The insulated glass seal has failed. Once moisture gets between the panes, the low-E coating starts to oxidize and you’ll see a permanent film that Windex won’t touch. That’s a full IGU swap, not a repair.
• The crank turns but the sash barely moves. On casement windows, the operator gear teeth are stripped or the hinge track is bound. We see this a lot on CGI casements in Garden Oaks where the foundation has shifted a half-inch and pinched the frame.
• Water staining on the interior sill after a hard Houston downpour. The weatherstripping or sill dam has failed, or the frame’s weep holes are clogged. Left alone, this turns into rot and your replacement cost climbs with a new sill and jamb extensions.
• You can hear the street like the window is open when it’s closed. Storm-rated CGI glass is thick, and when it’s seated right, it’s quiet. A sudden noise increase means the weatherseal is shot or the sash isn’t compressing into the frame. Glazing that’s lifted off the seal is the most common culprit.

Replacement Cost & What’s Included

Here’s what Houston owners should expect to pay for a single CGI window replacement, installed:

• Balancer or balance shoe replacement: $180 – $320 per sash, part and labor included
• Weatherstripping and seal replacement: $120 – $260 per window
• Operator or crank mechanism (casement): $200 – $380
• Insulated glass unit (single pane pair) replacement: $350 – $750 per window, depending on glass size, low-E type, and whether it’s impact-rated laminated glass
• Full sash replacement: $500 – $1,100 when the frame is sound
• Whole window replacement (frame included): $900 – $1,400 installed for a standard-size CGI-compatible unit, more for large openings or impact-rated laminated glass

The price goes on paper before we touch anything, and it does not move at the door. You’ll know the part cost, the labor, and the exact number you owe before a single screw turns. Every replacement is covered by our written 365-Day Done Right Promise: if it fails within a year, we come back at no charge. That includes a free second visit while the guarantee is in force.

DIY or Call Us?

Some things we’ll happily tell you to check yourself: confirm the window is actually unlocked, clean the track and check for a twig or a domino your kid dropped into the slider, and confirm the weep holes on the exterior sill aren’t plugged with dirt. Those fix a surprising number of “stuck” windows on Houston homes.

But replacing a balancer or a sash on a CGI window means working with coils under tension inside a narrow jamb pocket. The balance springs on a full-size sentinel sash carry enough tension to break a finger if they release wrong. We’ve also seen homeowners order a “standard” replacement sash that was a half-inch off because CGI’s frame dimensions vary by series. If you’re past the cleaning-the-track stage, call (432) 278-2282 and we’ll match the part and put it in right. Measure twice, seal it right, and the window does the rest of the talking.

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