Seattle Horizontal Sliding Windows
If you’re struggling with inefficient horizontal sliding windows that stick or slide slowly, Lake Washington Windows and Doors has the solution. Call us today for window installation services in the Greater Seattle area. Our customers love the high-quality replacement windows we provide from the top industry-leading manufacturers.
Horizontal Sliding Windows Defined
Horizontal sliding windows, sometimes called gliding windows, are a type of sash window similar to single or double-hung windows. Rather than opening vertically, sliding windows open horizontally by sliding the sash from left to right or vice versa. Single horizontal sliding windows have one stationary sash and one operable sash, while double horizontal sliding windows have one stationary sash and two operable sashes.
We’ve Carefully Chosen The Best Manufacturers For Your Seattle Sliding Windows
Let us use our experience and industry knowledge to your benefit. With over 30 years in the window industry, time has allowed us to determine the horizontal sliding manufacturers who deliver the best blend of quality, price, and VALUE for you. Our chosen manufacturer partners create value in four essential areas:
- Consistency of quality and service over the years
- Level of warranty support to you
- Industry longevity
- Product innovation
Our valued manufacturer partners for horizontal sliding windows are:
Best Applications
- Excellent choice for rooms facing walkways, porches, and patios
- Great for bedroom windows and spaces with egress requirements.
- For those who find hand-crank windows more difficult than sliding windows
- Great source of natural light and ventilation
- Excellent low maintenance and easy-to-clean window style
- For those looking for a low-cost operable window style
- Provide excellent security with lever and track locking systems
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LW Series Premium Sliding Vinyl Windows
Features and Benefits:
- High-quality rollers with precision bearings and stainless steel axles ensure effortless gliding for a lifetime.
- Even sightline frames provide a symmetrical appearance, enhancing your home’s curb appeal.
- Standard sound suppression technology reduces outside noise by up to 50% compared to typical dual-pane windows.
- Built-in ventilation latches allow for a semi-secure opening, letting in fresh air while maintaining safety.
- The Aluma-Force heavy-duty screen frame, made with thick extruded aluminum walls, ensures longevity and easy removal.
| Window Types | Energy Efficiency | Glass Packages | Noise Reduction | Design | Quality | Security | Warranty |
| Single Slider | Comfort•Core™ | SunMatrix | Sound Package | Even Sightlines | Weather-Tight Seal | First Guard | Limited Double Lifetime |
| Single Hung | Inner•Core™ | Infinit-e | Maximum View | Smooth Operation | Sash Dead Bolt | ||
| Picture | SunShield | Ventilation Latch | Heavy-Duty Screen | Continuous Interlock | |||
| Geometric | CoolShield | XTRU | |||||
| Luminance | Armor | ||||||
| QuadraTherm |
LW Series Double Sliding Vinyl Windows
LW Series double sliding windows are designed with two operable sashes that glide horizontally, providing enhanced ventilation and ease of use. Their even sightline frames offer a balanced, symmetrical appearance that complements any home’s aesthetic. Constructed with durable vinyl and advanced energy-efficient technology, LW Series double sliding windows provide long-lasting performance, comfort, and reduced energy costs.
Features and Benefits:
- Both sashes slide horizontally, providing enhanced ventilation and flexibility in airflow control.
- High-quality rollers and a constant-force stainless steel balance system ensure effortless and reliable window movement.
- Advanced glass packages exceed Energy Star® requirements, helping to reduce energy costs year-round.
- Proprietary titanium dioxide-infused vinyl extrusions are engineered for superior strength and longevity.
- Optional laminated security glass and solid stainless steel sash deadbolts offer increased protection against forced entry.
| Window Types | Energy Efficiency | Glass Packages | Noise Reduction | Design | Quality | Security | Warranty |
| Double Slider | Energy Star Certified | SunMatrix | Sound Package | Even Sightlines | XTRU | First Guard | Limited Double Lifetime |
| Double Hung | Infinit-e | Tilt-In Feature | Smooth Operation | Sash Dead Bolt | |||
| Casement | SunShield | Ventilation Latch | Easy Clean Glass | Continuous Interlock | |||
| Awning | CoolShield | Armor | |||||
| Bay & Bow | Luminance | ||||||
| Garden | QuadraTherm |
The Milgard Ultra Series fiberglass windows are top-of-the-line when it comes to window technology. Fiberglass is an eco-friendly window material that provides the highest energy-efficiency levels available. Fiberglass is made primarily of silica sand, an abundant natural resource. Glass is made primarily of sand. Thus the frame and glass expand and contract at roughly the same rate while remaining resistant to swelling, rotting, and warping, allowing for a longer lifespan.
Features and Benefits:
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Extremely durable with an expected lifespan of nearly 80 years.
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Strong frame material allows for large custom sizes
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Paintable frames that homeowners can update to match current home color trends
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Low expansion/contraction rate through 100-degree temperature changes means less glass and caulking failure over time
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An Energy Star package tailored to the Seattle region for optimal energy efficiency.
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Custom colors, hardware, and glass options to match any home design.
| Configurations | Hardware Features | Color Options | Grid Options | Glass Textures | Tint Options | Screen Options |
| Half-vent | Positive Action® Lock | Interior Colors | Interior Grids | Obscure Aquatex | Cardinal Low-E | Standard Mesh |
| Half-vent above | Cam Lock (optional) | White (any exterior color) | Flat GBG Grid | Obscure Clear 42 | Solar Bronze | PureView Mesh |
| Half-vent below | Sash Pull | Harmony (harmony exterior only | Sculptured GBG Grid | Obscure Delta Frost | Solar Gray | |
| Single-vent | Bark (bark exterior only) | 3/4″ Vintage SDL | Obscure Frosted Glue Chip | |||
| Double-vent | Black bean (black bean exterior only) | 1-1/8″ Vintage SDL | Obscure Glue Chip | |||
| Half-vent below with gable above | Exterior Colors | 1-1/8″ Craftsman SDL | Obscure Matelux | |||
| Half-vent below with 2-lites above | Frost | 1-1/8″ Legacy SDL | Obscure Narrow Reed | |||
| Half-vent above with 2-lites below | Harmony | Exterior Grids | Obscure P516 | |||
| Double-vent below | Bark | Flat GBG Grid | Obscure Rain | |||
| Double-vent above with 3-lites below | Black bean | Sculptured GBG Grid | ||||
| Double-vent below with 3-lites above | 3/4″ Vintage SDL | |||||
| 1-1/8″ Vintage SDL | ||||||
| 1-1/8″ Craftsman SDL | ||||||
| 1-1/8″ Legacy SDL |
COMMERCIAL-GRADE Installation
Leak Armor Lifetime Installation Guarantee
When it comes to preserving the lifespan of your new windows and doors, installation matters. Thousands of window and door installations have honed our replacement process to perfection. For each project, our team follows a streamlined 3-step process to ensure you experience minimal delays and inconvenience before enjoying the benefits of your new window or door.
Top-Rated Window & Door Replacement Services
At Lake Washington Windows and Doors, we offer the highest quality windows and unparalleled customer service, with over 800 5-star reviews. With each installation, our exclusive Leak Armor Installation provides superior protection around your window openings. When you choose us for your window installation project, you can be sure that you’re getting the best.
Financing Options with Convenient 10 Minute Approvals
In addition to special offers and promotions, ask our sales representative about our quick, digital financing application process. From low-interest traditional loans to no down-no payment-no interest deferred financing plans, we can help you fund your replacement window project so you can mobilize your cash for other investments. We are a proud partner of GreenSky, one of the largest lenders for the home improvement industry. See how much you can be pre-approved for.
Every Window & Door Includes a Limited Lifetime Warranty
The beauty of working with the top window manufacturers in the industry is the support you can expect before, during, and after installation. Milfard offers a limited lifetime warranty. However, the likelihood that you’ll need to take advantage of the warranties is low.
Milgard Lifetime Warranty Guarantee
Milgard’s award-winning windows and doors are built to last. However, if you ever encounter an unexpected problem, you can rest assured that their lifetime warranties cover your purchase.
Every Installation Includes Leak Armor Commercial-Grade Protection
Our exclusive Leak Armor protection is included with every window we install. Developed through thousands of customer installations and years of experience, we utilize multiple layers of flashing, pans, and sealants in a specific manner to provide commercial-grade sealing to residential homes.
Horizontal Sliding Window FAQs
Do horizontal sliding windows require additional framing?
Horizontal sliding windows do not require additional framing as they can fit within the existing window frames. If you’re unsure about the size of your frame, don’t worry about it! Our team can assess the space and help you find the right size window to fit your needs.
Are sliding windows safe?
When it comes to home security, most sliding windows are very secure. They often have multiple locking points and can be reinforced with the classic piece of wood in the sliding track. Depending on their placement, they can also be a safe choice for homeowners with small children if they cannot be easily reached.
How do I determine the size of the replacement window I need?
Don’t worry about the measurements! The first step in our replacement process is scheduling a convenient time for a window specialist to visit your home and complete a complimentary, no-sales-pressure consultation. During this time, we’ll inspect your home windows or doors and take measurements so you don’t have to.
How long does it take to install horizontal sliding windows?
The amount of time it takes to install horizontal sliding windows varies depending on the complexity and size of the project. However, we generally take 2-5 days to complete the installation.