Casement Windows in Western Washington

Why Choose Renewal by Andersen?

Seattle’s weather is shaped by Puget Sound, the Pacific Ocean, and the Cascade Mountains. From October through April, cool, wet weather is common, with frequent drizzle, heavy clouds, and winter lows in the high 30s to low 40s. Seattle gets about 39.3 inches of rain each year, which is less than some cities, but the many rainy and cloudy days keep window frames and seals exposed to moisture. That constant dampness can lead to wood rot, failed seals, and mold. Summers are mild and drier, with temperatures often in the mid-to-upper 70s. Changing humidity can make wood and composite frames expand and contract, which may cause windows and doors to stick. Long, sunny summer days can also dry out wood and create small cracks that hold moisture once the cloudy weather returns.

Renewal by Andersen casement windows feature Fibrex® composite frames and energy-efficient glass options. Low-E4® SmartSun™ glass helps manage heat transfer while preserving natural light.

Each window is custom-made for your home and installed by our trained professionals. We also provide limited warranty coverage for qualifying products and installation.

How Casement Windows Work

Casement windows are sometimes called crank windows, since a hand crank opens the sash outward. Their side-hinged design gives you simple access to the entire window opening for ventilation.

An open sash can also catch passing breezes and direct fresh air inside. When you close and lock the window, the multi-point locking hardware pulls the sash securely against the frame. That tight fit helps limit air leakage.

Casement Window vs. Double Hung Windows

Both casement and double hung windows work well in many homes, but they operate differently.

Double hung windows move vertically, so only part of the opening is available at a time.
Casement windows open outward and nearly expose the entire opening, which makes them great for ventilation.
Casement windows press against their frames when locked, creating a snug seal.
Double hung windows are often preferred where an outward-opening sash could interfere with a walkway, patio, or other outdoor space.

Casement Windows Compared to Other Types

Sliding windows move horizontally, which works well where clearance is limited. Awning windows, on the other hand, are hinged at the top and open outward from the bottom.

Casement windows are best for expansive views, ventilation, and easy operation. They can also be coupled with picture windows to create a larger glass area while leaving operable sections for airflow.

Energy Efficiency and Glass Options

A tight-fitting casement design can reduce air leakage, and energy-efficient glass can limit heat transfer. Renewal by Andersen designs glass packages for different performance needs. Low-E4 SmartSun glass, for example, helps manage solar heat gain while allowing natural light into your home.

You can also compare double pane and triple pane glass. Triple pane glass adds another layer of insulation and can reach U-factors as low as .18 in certain configurations. That can be worth considering where energy performance matters most.

Materials, Frames and Durability

Renewal by Andersen uses Fibrex composite material for all replacement window frames. Fibrex combines the strength and stability of wood fibers with the low-maintenance qualities of a composite material.

Unlike traditional wood frames, Fibrex doesn’t need regular scraping, sanding, or repainting. It’s a durable alternative to standard vinyl, and its narrow frame profiles help preserve more of your view.

Style, Size and Color Options

Renewal by Andersen offers casement windows in a wide selection of interior and exterior colors for traditional and contemporary homes alike. Options include solid colors, woodgrain-style interiors, and grille patterns. Since each window is custom-made, sizing is tailored to your existing openings.

Best Places to Install Casement Windows in Your Home

Casement windows work especially well where you want strong ventilation but may have trouble reaching the window itself.

A crank-operated window above a kitchen sink is a common example.
Bathrooms benefit from the added ventilation.
Paired casements bring airflow and broad views to living rooms or sunrooms.
Because the sash opens outward, avoid spots where it would extend into busy walkways, decks, or other high-traffic areas.

Casement Window Installation and Warranty Details

The Renewal by Andersen process begins with your free in-home or virtual consultation.We measure your window openings precisely so the replacement units can be manufactured to fit your home just right.

Once your custom windows are ready, our installers remove the existing units, complete the installation, and tidy the work area. They also provide a final walkthrough that covers how to operate and care for your windows. Plus, your project comes with limited warranty coverage for qualifying window components and installation.

Cost and Value Breakdown

The true cost of casement windows varies. It depends on the window size, glass package, frame options, grille choices, hardware, and the number of windows being replaced. Energy-efficient replacement windows can reduce unwanted heat transfer and make your home more comfortable.

We can also discuss financing and promotional options during your consultation.