CGI Custom & Geometric Windows Nationwide | Sightline Windows & Doors

CGI Custom & Geometric Windows in Los Angeles: What to Know First

We install and service CGI custom and geometric windows across Los Angeles as an independent provider, and most custom-shape jobs run $1,800 to $6,400 per opening depending on glass package, geometry, and impact requirements. Typical turnaround for a replacement shaped unit is 4 to 8 weeks once measurements are confirmed, because CGI builds to order rather than stocking odd geometries. If you own a CGI window with an arch, radius, or custom angle and it’s fogged, binding, or leaking, call (509) 265-6387 and we’ll put a written price in front of you before any work starts.

Call (509) 265-6387

This page is for Los Angeles homeowners who already have CGI windows, or who are specifying them for a remodel, and need someone who understands what those shapes require on a west-facing wall in Atwater Village or a coastal exposure in Pacific Palisades. No vague estimates. No phone-tag.

How CGI Products Fail - and How We Fix Them

CGI builds a solid product, but custom and geometric windows in Los Angeles fail in predictable ways. Here’s what we actually see on service calls, matched to the series where we see it most often.

• Fogging between panes on CGI Estate Collection radius and arch units. The Estate Collection runs a dual-pane insulated glass with a warm-edge spacer, and on shaped units the seal flexes at the apex of the curve. Over five to seven years of Los Angeles sun and thermal cycling, the seal lets go and moisture gets between the lites. We replace the insulated glass unit (IGU) rather than the whole frame when the frame is sound, which saves roughly 40% off a full sash replacement.
• Binding on CGI Targa series casement and awning shapes. Targa is CGI’s mid-tier line, and the hardware is solid, but non-rectangular sashes put uneven load on the hinge pins. We measure the diagonal of the sash at three points to confirm racking, then re-shim the frame and replace worn hinges with the OEM part so the warranty on the frame stays intact. Aftermarket hinges on a Targa will void the frame warranty, and we won’t do that to you.
• Leakage at the sill on oversized and trapezoid openings. This is less about the window and more about the rough opening. Los Angeles homes built between 1980 and 2005 often have stucco returns that weren’t flashed for a non-rectangular unit. Water finds the corner. We pull the interior trim, inspect the rough opening with a moisture meter, and correct the flashing before we reset the window. Fixing the window without fixing the opening is a repeat-call guarantee.
• Failed impact glass delamination on coastal installations. CGI impact windows use a laminated interlayer, and in salt-air zones like Santa Monica, Venice, or Long Beach, the interlayer can begin to cloud at the edges if the glazing bead wasn’t sealed properly at install. The fix is a new IGU, but we also replace the glazing bead and sealant with a marine-grade product rather than what the factory ships.
• Crank failures on oversized Estate Collection casements. The Estate line uses a heavier sash, and on any casement wider than about 36 inches the crank operator works harder than it was designed to. We see stripped gears and bent arms regularly. The OEM replacement is the right call here, and while it’s being replaced we check the sash weight and the hinge alignment so the new operator isn’t inheriting the same problem.

One more thing worth knowing: CGI does not keep a deep parts bench for discontinued shapes. A radius unit built in 2012 may have no OEM hardware available today. When that happens, we tell you plainly, and we identify a quality aftermarket part that matches the original spec. We don’t hide the tradeoff, and we document it in writing.

Our CGI Custom & Geometric Windows Process

Here’s what happens when you call us about a CGI shaped window in Los Angeles:

1. 1
   Call and describe the window. A live person answers 24/7. Tell us the shape, the series if you know it, and what’s wrong. We’ll ask for a photo of the label on the frame, which tells us the exact model and glass make-up.
2. 2
   Measured survey. We come out and take the measurements we need: sightline width and height, the radius or angle, frame depth, and the condition of the opening. You keep a copy of that survey. It’s the document the price is built from.
3. 3
   Written price. We give you a line-item price before any work begins. That price doesn’t change unless we find hidden rot or structural damage, and if we do, we show you photos and a written change-order before we touch it.
4. 4
   Parts decision. If it’s a glass replacement, we order the IGU to your spec. If it’s hardware, we confirm OEM availability first, then aftermarket only with your sign-off. No surprises here.
5. 5
   The work. Background-checked, uniformed technician arrives on schedule. The person at your door is the person whose license number is on the paperwork. We protect the work area, remove the old unit without damaging the surrounding stucco or trim, and install the replacement.
6. 6
   Test and document. We operate the window through full open-close cycles, check the seal with a moisture reading on the frame interior, and photograph everything. You get a documented photo record of the finished job, plus your written warranty. The 365-Day Done Right Promise covers it: if it’s not done right, we make it right.

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What CGI Custom & Geometric Windows Costs in Los Angeles

Custom geometry changes the math, and we’d rather you see the numbers before you commit to a phone call. Here’s what we’re quoting in Los Angeles as of this year:

• IGU replacement only (fogged or failed glass) on a CGI radius or arch unit: $850 to $2,200 per sash, depending on size, glass package, and whether it’s impact-rated.
• Full replacement of a CGI Estate Collection fixed radius window: $2,800 to $5,400 installed, including flashing correction if the opening needs it.
• Full replacement of a CGI Targa casement or awning with custom geometry: $3,200 to $6,400 installed, with hardware included and the OEM hinge replacement if needed.
• Oversized or trapezoid CGI openings: $4,000 to $9,500 installed, driven by glass size, impact requirements, and whether we’re rebuilding the rough opening.

What moves the price: impact-rated laminated glass adds 25-35% versus standard dual-pane; true divided lites cost more than simulated; and an engineered rough-opening correction runs $600 to $1,800 depending on what we find behind the stucco. U-factor and SHGC targets also matter, since a west-facing Los Angeles exposure needs different glass than a north-facing one, and that changes the IGU spec.

Call (509) 265-6387 for a free estimate. We’ll send a technician, take measurements, and hand you a written price. No obligation, no follow-up calls from a sales desk.

Why Los Angeles Homeowners Call Sightline Windows & Doors for CGI Work

Because we’ll put the price on paper before anything else happens. That’s been the rule since 2012, and it’s written into the Haven Standard as Clause 1: have it in writing. The measured survey you keep and the written quote are the same document, so the number you’re given is the number on the invoice. No change orders, no “we found something else once we got into the wall” games.

Every technician who walks through your door is background-checked and uniformed, with a license number you can verify before you let them in. That’s Haven Clause 3, and it’s not a marketing line. Every job ends with a documented photo record, Clause 4, and every completed job carries the 365-Day Done Right Promise. If it’s not done right, we make it right, in writing, not as a courtesy.

Since 2012 we’ve installed and serviced 18,000+ windows and doors across eight product categories and eight manufacturer lines: PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. When a CGI product can’t be saved and a different line makes more sense for the opening, we’ll tell you that too. We specify by performance tier and price range, not by what’s in stock.

Sonia Raman grew up in Silver Lake watching her grandfather caulk and reglaze Craftsman bungalows, and she’s been measuring rough openings across Los Angeles County for the better part of two decades. The lesson that stuck from both: measure once, write it down, then measure again. That’s how we approach every CGI shaped window we touch.

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