Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterDouble Hung Windows in Los Angeles, CA | Sightline Windows & Doors
Double hung windows give Los Angeles homeowners the classic vertical-glide operation they want, with both the top and bottom sash moving independently. For Florida and other hurricane-prone regions, the impact-rated version of this window pairs that traditional look with laminated glass protection that holds together under flying debris. At Sightline Windows & Doors, we install these across Los Angeles through our PGT, CGI, CWS, ES Windows, ECO, and Mr-Glass lines. If you’re researching impact windows that don’t sacrifice the architectural character of your home, call (509) 265-6387 and we’ll walk you through what fits your openings and your wind zone.
Product Overview - Double Hung Windows
The double hung is one of the most familiar window profiles in American residential architecture, and for good reason. Both sashes slide vertically, which means you can open the top for ventilation while keeping the bottom closed, a nice feature for evening airflow in Los Angeles neighborhoods where coastal breezes shift through the day. The tilt-in design on both sashes also makes cleaning far easier than fixed or single-hung windows, since you can access the exterior glass surface from inside the home.
What separates an impact double hung from a standard one is the glazing and the frame engineering. The laminated impact glass uses a PVB interlayer that holds the glass in the frame even when struck, so the building envelope stays sealed during a storm. The frames themselves are available in aluminum or vinyl, and we’ll match the material to your home’s construction and your wind zone requirements. Sightline Windows & Doors installs this product in Los Angeles with the same care we give every opening: level, plumb, square, and sealed to Florida Building Code standards for high-velocity hurricane zones.
Architecturally, the double hung suits Los Angeles homes that lean traditional, whether that’s a 1920s Spanish Revival in Hancock Park, a mid-century ranch in the Valley, or a newer Mediterranean build near the coast. It’s a profile that reads as residential and established, which is exactly what many homeowners want when they’re replacing windows on an older home or building new with a classic elevation.
Technical Specifications
| Specification | Options |
|---|---|
| Frame materials | Aluminum, Vinyl |
| Glass options | Laminated Impact Glass (PVB Interlayer), Low-E Insulated Glass, Tinted Glass, Clear Glass |
| Color / finish options | White, Almond, Bronze, Black, Tan |
| Screen options | Half Screen, Full Screen |
| Design pressure | Matched to your wind zone, up to +/-100 - never higher |
| Compliance | Miami-Dade NOA (Notice of Acceptance) and Florida Product Approval numbers available per configuration; engineered to Florida Building Code (FBC) High-Velocity Hurricane Zone (HVHZ) requirements |
Sizes are cut per opening, so we’re not limited to stock dimensions. Your quote will include the exact configuration, the NOA or FL Product Approval number that applies to that size and glass package, and the design pressure rating for your specific wind zone in Los Angeles.
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Laminated Impact Glass
The core of the impact rating is the PVB interlayer laminated between glass panes. Under impact, the glass may crack but it stays bonded to the interlayer, which means the window remains in place and your home stays sealed against wind and rain penetration.
Miami-Dade NOA / FL Product Approval
Every configuration we quote carries a Miami-Dade Notice of Acceptance and Florida Product Approval number specific to that size, glass package, and frame material. We provide the number that applies to your openings on your written quote, so your permit submittal in Los Angeles is straightforward.
FBC / HVHZ Compliance
This window is engineered to Florida Building Code High-Velocity Hurricane Zone requirements. That’s the strictest windborne-debris standard in the country, and it governs installation in much of Los Angeles and the surrounding coastal zones.
TAS 201 / 202 / 203 Testing Context
The HVHZ protocol family these products are tested under includes TAS 201 for large-missile impact, TAS 202 for cyclic wind-pressure loading, and TAS 203 for forced-entry resistance. Those three tests together simulate what a window endures during a named storm.
Design Pressure for Your Wind Zone
We match the design pressure rating to your specific wind zone, up to +/-100 PSF, and we never spec higher than the opening requires. Overspecifying is wasted money. Your quote will state the exact DP rating for your Los Angeles location.
Energy Performance
Low-E insulated glass is available as an option for this window, which helps with heat gain through Los Angeles summers. Tinted and clear glass options are also available depending on your orientation and how much visible light you want in the room.
Color & Glass Options
The five finish options for the double hung cover most of what we see across Los Angeles homes. White and almond work well on the traditional and ranch-style houses that dominate neighborhoods from the Valley to the Westside. Bronze and black read more contemporary, and they’re popular on newer builds and on homes with dark trim. Tan sits in between, and it blends nicely with the stucco tones you see throughout Southern California.
On the glass side, laminated impact glass is the default for storm protection, and it can be ordered clear or tinted. Tinted glass cuts glare, which matters in rooms that get direct western exposure. Low-E insulated glass adds a thermal layer that helps with energy performance and is available as an upgrade if you want both impact protection and improved insulation. Your choice of half screen or full screen can be tied to how you ventilate each room, half screens are common on upper floors where you open the top sash more often.
Installation by Sightline Windows & Doors in Los Angeles
An impact window is only as good as its installation. The NOA rating assumes the window is set correctly into the opening, flashed properly, and sealed at the perimeter. We install to AAMA 2400/2410 practice, which governs proper installation of fenestration products, and we use AAMA 812 low-expansion foam at the perimeter to create a continuous air and water seal without distorting the frame.
Every install starts with a pre-install inspection of the rough opening. We check the opening for square and plumb before the window ever goes in, because you can’t correct a bad rough opening with caulk. The window is set level, plumb, and square in the opening, shimmed at the proper points so the frame doesn’t flex under load, and fastened per the manufacturer’s installation instructions that correspond to the NOA. After the perimeter seal is complete, we run a water test on the installation to confirm the opening drains correctly and no leaks exist at the sill or jambs.
Los Angeles coastal exposure adds nuance. Homes near the ocean see salt air and wind-driven rain that inland homes don’t, and your wind zone in a coastal neighborhood may require a higher design pressure than a build ten miles inland. We’ll confirm the wind zone and the applicable design pressure for your address before we quote, and we’ll note any permit submittal requirements for your jurisdiction.
Frequently Asked Questions - Double Hung Windows
The double hung is matched to your wind zone, with design pressures up to +/-100 PSF depending on your location in Los Angeles. We never spec higher than your opening requires. Your written quote will state the exact DP rating for your address.
Lead times vary by manufacturer and configuration. PGT, CGI, CWS, ES Windows, ECO, and Mr-Glass all have different production schedules, and glass package choices can extend or shorten the timeline. We’ll give you a current lead time estimate when we quote your project, and we’ll update you if production schedules shift before your windows ship. Call (509) 265-6387 for current lead times on the configuration you need.
In most Los Angeles jurisdictions, yes. HVHZ compliance requires documentation that matches the specific window configuration you’re installing. We supply the applicable NOA or FL Product Approval number with your quote and your permit package, so the submittal process doesn’t stall at the building department.
Yes. Sizes are cut per opening, and you can specify glass type, finish color, and screen type for each window. If you’re replacing existing windows in Los Angeles, we’ll measure each rough opening individually, because older homes often have slightly different dimensions window to window.
Aluminum frames need periodic cleaning to remove salt and grime, particularly in coastal Los Angeles neighborhoods. Vinyl frames are lower maintenance, though any frame benefits from keeping the track and weep holes clear of debris. The tilt-in sashes on this double hung make glass cleaning much easier from inside the home. Call (509) 265-6387 if you have questions about maintaining your specific finish.
Get a Quote - Double Hung Windows in Los Angeles
If you’re ready to price double hung impact windows for your Los Angeles home, call (509) 265-6387 to schedule a free on-site measurement. We’ll confirm your wind zone, walk through glass and finish options, and give you a written line-item quote with the NOA or FL Product Approval number for your specific configuration.
Written by the team at Sightline Windows & Doors, serving Los Angeles, CA.
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