Garden windows for your kitchen create a beautiful, sunlit space that brings the outdoors inside, providing the perfect environment for growing herbs, displaying plants, or simply adding depth and character to your home. If you are planning a window replacement project, a garden window over the kitchen sink is one of the most rewarding upgrades you can make. At Weatherguard Construction, we have installed garden windows in kitchens across Stillwater, Woodbury, Minneapolis, and throughout the Twin Cities for over 25 years.
What Is a Garden Window?
A garden window is a three-dimensional window that projects outward from the wall of your home, creating a small greenhouse-like shelf space inside. Typically featuring a fixed front pane, two operable side vents, and a glass or solid top panel, garden windows are designed to maximize light exposure and provide ventilation.
Garden windows are sometimes called greenhouse windows or box windows. They are most commonly installed over kitchen sinks, where the extended shelf space is easily accessible and the additional light enhances the room's ambiance. However, they can also work beautifully in bathrooms, sunrooms, and breakfast nooks.
Benefits of Kitchen Garden Windows
Natural Light Enhancement
Garden windows capture light from three directions: front, left side, and right side. The angled top panel on many models also allows light from above. This multi-directional light exposure floods your kitchen with natural daylight, reducing the need for artificial lighting and creating a bright, inviting atmosphere. In Minnesota, where winter days are short, maximizing natural light is especially valuable.
Herb and Plant Growing Space
The built-in shelf of a garden window provides the ideal environment for growing kitchen herbs year-round. Basil, rosemary, thyme, cilantro, and other herbs thrive in the bright, protected space of a garden window. Having fresh herbs steps away from your cutting board elevates everyday cooking. Many homeowners in St. Paul and Maple Grove also use their garden windows to display potted flowers, succulents, or decorative items.
Added Visual Depth and Interest
A garden window adds architectural dimension to both your kitchen interior and your home's exterior. From inside, it creates a focal point that draws the eye and makes the kitchen feel larger. From outside, the protruding window adds visual interest and curb appeal to an otherwise flat wall surface.
Ventilation
The operable side vents on garden windows provide cross-ventilation that helps clear cooking odors, steam, and excess moisture from your kitchen. This ventilation is particularly valuable when cooking during Minnesota's warm summer months.
Increased Counter Space
The shelf or sill of a garden window effectively adds usable display and storage space to your kitchen without taking up floor area or counter space. This bonus is especially appreciated in smaller kitchens where every inch of surface area counts.
Garden Window Design Considerations
Size and Placement
Garden windows are typically 3 to 5 feet wide and 2 to 3 feet tall, though custom sizes are available from premium manufacturers. The most popular location is directly above the kitchen sink, where the window replaces a standard flat window. When planning placement, consider:
- Exterior clearance: The window projects 12 to 18 inches from the wall, so ensure there are no walkways, decks, or obstructions directly below
- Structural support: Garden windows are heavier than flat windows and may require additional framing support, which Weatherguard Construction addresses during full frame installation
- Sun exposure: South-facing and east-facing kitchen walls provide the best light for growing herbs and plants
Glass and Energy Efficiency
Minnesota's extreme temperatures demand high-performance glass in garden windows. Weatherguard Construction installs garden windows with:
- Low-E coated glass on all panes for maximum energy efficiency
- Argon gas fill between panes for improved insulation
- Insulated top panels (glass or solid) to reduce heat loss
- Tempered glass in side vents for safety
The multi-surface design of garden windows creates more glass area than a flat window of the same rough opening size, so selecting high-performance glass is especially important for maintaining energy efficiency.
Material Options
Garden windows are available in several frame materials from the premium brands Weatherguard Construction installs:
- Wood with aluminum cladding from Pella and Andersen provides the warmest interior aesthetics with weather-resistant exteriors
- Vinyl options offer good energy performance at a lower price point
- Fiberglass from Marvin delivers exceptional durability and thermal performance
Ventilation Design
Most garden windows feature operable casement-style side vents that crank open for ventilation. Some models offer sliding side panels instead. The casement-style vents provide better air sealing when closed and are easier to operate, making them our recommended choice for Minnesota installations.
Garden Window Cost
Garden windows typically cost more than standard flat windows of a similar rough opening size due to their three-dimensional construction and additional glass area. Expect to pay between $1,000 and $3,000 for the window unit itself, plus installation costs. Factors affecting price include size, frame material, glass package, brand, and whether structural modifications are needed.
Weatherguard Construction provides detailed, transparent estimates for every project. We will assess your kitchen, discuss your preferences, and recommend the best garden window option for your home and budget. Call us at (651) 439-4320 or book a free consultation.
Installation: Why Full Frame Matters
Garden windows require precise installation to perform properly and prevent water intrusion. Because they project beyond the wall plane, proper flashing, sealing, and structural support are critical. Weatherguard Construction's full frame installation approach ensures:
- Complete removal of the old window and frame for thorough inspection
- Proper header and sill preparation to support the garden window's weight
- Comprehensive flashing and waterproofing to prevent leaks
- Insulation of all gaps and cavities around the new window
- Secure anchoring to the home's structure
This meticulous approach is especially important for garden windows because their protruding design creates additional exposure to rain, snow, and ice. Our 25 years of experience in Minnesota's climate ensures your garden window is installed to last.
We proudly serve homeowners throughout Minnesota from our Stillwater headquarters, as well as Schaumburg, IL and Centennial, CO.
Frequently Asked Questions
Are garden windows energy efficient?
Garden windows can be very energy efficient when specified with high-performance glass packages including low-E coatings and argon gas fill. Because they have more glass surface area than a flat window, selecting the right glass package is essential. Weatherguard Construction ensures every garden window we install meets or exceeds Minnesota energy code requirements.
Can a garden window be installed where a standard window exists?
Yes. In most cases, a garden window can replace an existing standard kitchen window. The rough opening may need to be widened or the header reinforced to accommodate the garden window's size and weight, but these modifications are a standard part of Weatherguard Construction's full frame installation process.
Do garden windows leak?
Properly installed garden windows do not leak. Water intrusion is typically the result of poor flashing and sealing during installation, not a flaw in the window itself. This is why professional installation by an experienced company like Weatherguard Construction is critical.
What can I grow in a garden window?
Kitchen herbs like basil, rosemary, thyme, mint, parsley, and cilantro grow beautifully in garden windows. Succulents, small flowering plants, and decorative items also work well. South-facing or east-facing garden windows provide the best growing conditions.
