Expert repair and replacement of bay and bow windows across the DMV. We fix leaks, drafts, foggy glass, and structural issues while preserving the architectural beauty that makes these windows special.
Bay windows have angled side panels (typically at 30 or 45 degrees), while bow windows have multiple curved panels creating a gentle arc. Both project from the exterior wall to add space and light.
Bay windows typically have 3 panels with a flat center and angled sides, creating a defined projection.
Bow windows use 4-6 equal panels arranged in a gentle curve for a softer, more expansive look.
Bay and bow windows have unique challenges due to their projecting design. We address all of them.
Bay and bow windows are particularly prone to leaks because of the joints between the window head and the house structure. Failed flashing,
The angled joints and multiple panels in bay and bow windows create more potential air leakage points than flat windows. Failed weatherstripping,
Failed seals on the insulated glass units (IGUs) in bay and bow windows are common,
Bay and bow windows have more glass area and more joints than flat windows, which can make them energy weak points in your home.
Because bay and bow windows project from the wall, they are subject to settling forces that can cause the frame to shift, creating gaps, cracks,
Casement cranks, locks, and hinges on operable bay and bow window panels wear out over time.
Bay and bow windows come in several panel configurations. We repair and replace all types.
A fixed center picture window flanked by operable double-hung windows. The most common bay window configuration in DMV homes. The center panel provides maximum views while the side panels offer ventilation.
A fixed center panel with operable casement windows on each side. Casements crank outward and provide full-opening ventilation, making this a popular choice for kitchens and living rooms.
Three casement panels in a bay or multiple casement panels in a bow. This configuration maximizes ventilation and provides a clean, uniform appearance. Common in modern renovations.
All panels are fixed (non-operable), maximizing the glass area and views. This is the most energy-efficient configuration and is often used in living rooms where ventilation is provided by other windows.
The most common home style in Northern Virginia and Maryland suburbs. Bay windows typically feature three panels with a large center picture window and two f...
Victorian homes throughout the DMV often feature elaborate bow windows with four or five curved panels.
Craftsman homes in areas like Kensington and Cleveland Park often have bay windows with distinctive art-glass or leaded upper sashes. Repair and restoration of these windows requires matching the original glass patterns.
Modern homes and renovations across the DMV use clean-lined bay and bow windows with minimal framing and large glass areas. These windows prioritize views and natural light with energy-efficient glass packages.
Replace failed insulated glass units with new argon-filled Low-E units. This eliminates fog and condensation while dramatically improving thermal performance. Costs 40-60% less than full window replacement.
New weatherstripping and re-caulking of all frame joints eliminates air infiltration. This is often the single most impactful and cost-effective improvement for drafty bay windows.
The cavity beneath the window seat is a common source of cold air infiltration. Proper insulation of this space with spray foam or rigid insulation can dramatically improve comfort.
Proper head flashing and waterproofing above the bay window prevents water intrusion that can damage insulation, frames, and interior finishes. We inspect and repair flashing during every bay window service call.
Bay and bow windows have more glass area than flat windows, making the glass type selection especially impactful for energy performance and comfort.
The most impactful upgrade for bay and bow windows. Because these windows have a large glass-to-frame ratio and often face south or west, Low-E coatings.
Large center panels in bay windows often exceed the size thresholds that require tempered glass by code.
Laminated glass offers superior noise reduction -- a significant benefit for bay and bow windows that project closer to street noise.
Use our free Window Style Finder tool to identify your window type and get personalized repair recommendations for your home.
Open Window Style FinderIGU repair, seal replacement, and energy upgrades
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Learn MoreLearn how Low-E coatings improve energy efficiency
Learn MoreSchedule a free assessment. We will diagnose leaks, drafts, and foggy glass, then recommend the most cost-effective solution.
Expert Glass Repair -- Fully Insured -- Serving DC, MD & VA