Round windows and specialty-shaped windows transform ordinary spaces into architectural masterpieces. Whether you’re drawn to the classic elegance of arched windows or the modern simplicity of circle windows, these distinctive window styles can enhance your Mid-Atlantic home’s curb appeal while improving natural light and energy efficiency.
At Thompson Creek, we custom-manufacture specialty windows in our Maryland facility to fit your home’s exact specifications. With over 40 years of experience serving homeowners throughout Maryland, Virginia, and Washington DC, we understand which window styles work best for our region’s unique climate challenges—from humid summers to freezing winters.
What Are Round Windows?
Round windows, also called specialty-shaped windows or architectural windows, feature curved designs that break up the straight lines typical of traditional rectangular windows. These distinctive windows include arched windows, full circle windows, half-round windows, elliptical windows, and quarter-round variations. Each style offers unique benefits for both aesthetics and functionality.
Unlike standard double-hung windows or casement windows, most round windows are fixed (non-operable), meaning they don’t open for ventilation. However, this fixed design provides superior energy efficiency since there are no moving parts where air can leak through. According to ENERGY STAR®, properly installed specialty windows can help reduce heating and cooling costs by an average of up to 13% when replacing older, single-pane windows.
Types of Round Windows for Your Home
Arched Windows
Arched windows feature a distinctive curved top that rises above a rectangular base, creating a dramatic focal point. These windows evoke classical architecture and work beautifully in entryways, great rooms, and above patio doors to add height and grandeur.
Best for: Homes with cathedral ceilings, traditional or Mediterranean architecture, or spaces where you want to create a sense of vertical space. Arched windows are particularly popular in Mid-Atlantic region homes with colonial or Georgian architectural styles.
Energy efficiency: Thompson Creek’s custom arched windows exceed ENERGY STAR® 2022 criteria with advanced Low-E glass coatings that block UV rays while allowing natural light to enter. This helps protect your furniture from fading while keeping your home comfortable year-round.
Circle Windows
Circle windows (also called porthole windows or full-circle windows) bring natural light into spaces where traditional rectangular windows won’t fit. These symmetrical windows work exceptionally well in bathrooms, stairway landings, closets, and as accent windows in gables.
Best for: Small spaces requiring privacy and light, contemporary home designs, and creating visual interest on exterior facades. Circle windows are ideal for Mid-Atlantic homes—from Fairfax to Lutherville Timonium—looking to add character without sacrificing wall space.
Design tip: Circle windows pair beautifully with other window styles. Consider placing a circle window above a bank of casement windows or flanking entry doors for balanced symmetry.
Half-Round Windows
Half-round windows (also called half-circle or semicircle windows) are created by cutting a full circle in half horizontally. These elegant windows commonly appear above entry doors, large picture windows, or as transom windows to bring additional light into rooms with high ceilings.
Best for: Traditional homes, above entryways, and complementing other rectangular window combinations. Half-round windows with decorative grilles create a fan-like pattern that suits colonial and Victorian architecture common throughout the Washington DC metro area.
Custom manufacturing advantage: Because Thompson Creek manufactures windows in our Maryland facility, we can create half-round windows in virtually any size to perfectly fit your home’s existing architecture—whether you live in Upper Marlboro, Manassas, or anywhere across our service area.
Quarter-Round Windows
Quarter-round windows take half-round designs and cut them in half again, creating a distinctive quarter-circle shape. These compact windows fit into tight architectural spaces and create interesting combinations when paired with other window styles.
Best for: Corner installations, dormer windows, and unique architectural details. Quarter-round windows are excellent for maximizing light in attic conversions or second-story additions while maintaining the home’s architectural integrity.
Elliptical Windows
Elliptical windows resemble half-round windows but feature a wider, more gently curved arch. This elongated design works particularly well above wide patio doors, picture windows, or entryways with sidelights, creating an elegant umbrella effect.
Best for: Homes with wide window openings, above French doors, and contemporary architectural styles. Elliptical windows are perfect for Fairfax and Stafford area homes looking to enhance curb appeal while improving natural lighting.
Weather performance: All Thompson Creek specialty windows are AAMA-tested to withstand winds up to 146 mph—critical protection for Mid-Atlantic homeowners who face severe weather including hurricanes, nor’easters, and strong summer thunderstorms.
Benefits of Round Windows
Enhanced Natural Light
Round windows positioned high on walls or above other windows capture sunlight throughout the day without sacrificing privacy. This “clerestory” placement brightens interior spaces naturally, reducing your reliance on artificial lighting and lowering electricity costs.
Improved Curb Appeal and Home Value
Specialty-shaped windows create distinctive architectural character that sets your home apart. According to the National Association of Realtors’ 2025 Remodeling Impact Report, window replacement projects can offer a 70-74% return on investment when you sell your home, with unique architectural windows often commanding premium appeal from buyers.
Superior Energy Efficiency
Because most round windows are fixed installations without operable components, they provide excellent energy efficiency. Thompson Creek’s custom specialty windows feature:
- Multi-chamber vinyl frames that resist heat transfer
- Advanced Low-E glass coatings that reflect heat in summer and retain warmth in winter
- Argon gas fills between panes for additional insulation
- Proper installation by our factory-trained technicians to eliminate air leakage
These features help Mid-Atlantic homeowners combat the region’s extreme temperature swings—from 90°F+ summer heat to sub-freezing winter cold.
Architectural Flexibility
Round windows complement virtually any home style:
- Colonial and Georgian homes: Half-round windows with traditional grilles
- Victorian architecture: Ornate elliptical windows with decorative glass
- Contemporary designs: Clean-lined circle windows without grilles
- Craftsman style: Arched windows with wood or dark frame colors
Where to Install Round Windows in Your Home
Above Entry Doors
Half-round or elliptical windows above front doors create a welcoming focal point while flooding your foyer with natural light. This classic placement works in homes of all styles and is particularly effective in two-story entryways.
Stairway Landings
Circle or half-round windows on stairway landings brighten what’s typically a dark transitional space. These windows also provide architectural interest visible from both interior and exterior views.
Bathroom Windows
Circle windows offer privacy while introducing natural light—perfect for bathrooms where wall space is limited. Position them higher on walls to maximize privacy without sacrificing illumination.
Gable Ends
Round windows in gable ends (the triangular wall sections under a peaked roof) add character to your home’s exterior profile while bringing light into attic spaces or second-floor rooms.
Great Rooms and Living Spaces
Large arched windows or combinations of round windows with bay windows create dramatic focal points in great rooms, living rooms, and dining areas. These installations maximize natural light while providing striking views.
Round Window Costs and Investment Value
The cost of specialty-shaped windows varies based on size, style, complexity, and installation requirements. Custom round windows typically range from $500 to $2,500 per window, depending on these factors:
- Window size: Larger windows require more materials and labor
- Design complexity: Intricate shapes or custom sizes increase manufacturing costs
- Glass options: Upgraded Low-E coatings, tinted glass, or decorative patterns affect pricing
- Installation challenges: Second-story installations or structural modifications add labor costs
The Thompson Creek Advantage: No Middleman Markup
Because Thompson Creek designs, manufactures, and installs all our windows, you avoid the typical markup charged by companies that outsource these functions. Our factory-direct pricing combined with our 50-year No-Hassle Warranty provides exceptional long-term value.
Financing options: Thompson Creek offers flexible financing to make energy-efficient window replacement affordable for homeowners throughout Maryland, Virginia, and Washington DC.
Round Windows vs. Traditional Window Styles
| Feature | Round/Specialty Windows | Traditional Rectangular Windows |
| Ventilation | Most are fixed (non-operable) | Can be operable or fixed |
| Energy Efficiency | Excellent (no moving parts) | Very good (when quality construction) |
| Natural Light | Superior for high placements | Good for eye-level views |
| Architectural Impact | High – creates focal points | Moderate – traditional appearance |
| Installation Cost | Higher (custom sizing) | Lower (standard sizes) |
| Maintenance | Low (fixed windows) | Low to moderate (depending on type) |
| Best Uses | Accent windows, high walls, entryways | Primary room windows, ventilation |
Choosing the Right Round Windows for Your Home
Consider these factors when selecting specialty windows:
- Architectural Style Match your window choices to your home’s architectural period. Colonial homes pair beautifully with half-round windows featuring traditional grilles, while contemporary homes shine with clean-lined circle windows.
- Interior Space Function High-traffic areas benefit from fixed round windows that won’t interfere with furniture placement. Bedrooms and living spaces typically need operable windows for ventilation—consider combining specialty windows with casement or double-hung windows.
- Light Direction and Privacy South-facing round windows maximize winter sunlight but may cause summer overheating—select appropriate Low-E glass coatings. Higher placements provide privacy while still delivering natural light.
- Climate Considerations Mid-Atlantic weather demands windows that can handle humidity, temperature extremes, and severe storms. Thompson Creek’s vinyl windows won’t warp, rot, or require painting, and they’re tested to withstand hurricane-force winds up to 146 mph.
- Maintenance Requirements Fixed round windows require minimal maintenance—just occasional cleaning. Thompson Creek’s tilt-in designs for operable windows paired with specialty shapes make cleaning exterior glass simple and safe.
Installation Considerations for Specialty Windows
Professional installation is crucial for specialty-shaped windows. Improper installation can lead to:
- Air and water infiltration
- Reduced energy efficiency
- Structural damage to surrounding walls
- Void warranties
- Premature window failure
Thompson Creek’s installation process:
- Precise measurement: Our specialists measure existing openings or plan new installations to ensure perfect fit
- Custom manufacturing: Each window is built to your exact specifications in our 70,000 sq. ft. Maryland facility
- Professional installation: Factory-trained installers complete the work efficiently, typically within one day
- Quality inspection: Every installation is inspected to meet our rigorous standards
- Warranty activation: Your 50-year No-Hassle Warranty begins immediately upon installation
Unlike companies that outsource installation to third-party contractors, Thompson Creek maintains complete accountability from design through warranty service.
Maintaining Your Round Windows
Specialty windows require minimal maintenance, especially when you choose vinyl frames:
Regular Cleaning
- Clean glass with standard glass cleaner and soft cloth
- Wipe vinyl frames with mild soap and water
- Avoid abrasive cleaners that could scratch glass or frames
Seasonal Inspections
- Check weatherstripping annually
- Inspect for any gaps or settling
- Ensure proper drainage from weep holes
Professional Service
Thompson Creek’s 50-year No-Hassle Warranty covers both product and installation. If you ever experience issues, our local service team responds quickly—no third-party contractors, no runaround.
Frequently Asked Questions About Round Windows
Can round windows be opened for ventilation? Most round and specialty-shaped windows are fixed (non-operable) because their curved designs make opening mechanisms impractical. However, some arch-top windows include operable bottom sections. For ventilation, combine specialty windows with nearby operable windows like casement or double-hung styles.
Are round windows energy efficient? Yes. Fixed round windows are actually more energy efficient than operable windows because they have no moving parts where air can leak. Thompson Creek’s specialty windows exceed ENERGY STAR® 2022 criteria with advanced Low-E glass, argon gas fills, and multi-chamber vinyl frames engineered for the Mid-Atlantic climate.
How much do custom round windows cost? Custom round windows typically range from $500-$2,500 per window depending on size, style, and installation complexity. Thompson Creek’s factory-direct pricing eliminates middleman markup, providing better value than companies that outsource manufacturing. Schedule a free consultation for an accurate quote based on your specific project.
Will specialty windows fit my home’s style? Round windows complement virtually all architectural styles when properly selected. Traditional homes benefit from half-round windows with grilles, while contemporary homes shine with clean-lined circle windows. Thompson Creek’s design specialists help match window styles to your home’s architecture.
How long does it take to install round windows? Most specialty window installations are completed within one day. The timeline depends on the number of windows, installation location, and whether structural modifications are needed. Thompson Creek provides clear timelines during your consultation.
Do round windows increase home value? Yes. Specialty windows improve curb appeal and natural lighting, both factors that increase home value. Window replacement projects offer a 67-73% return on investment according to the National Association of Realtors, with unique architectural windows often commanding premium appeal from buyers.
Are round windows harder to clean? No. Fixed round windows are actually easier to clean than operable windows since they have no screens or moving parts. For high installations, consider accessibility during installation planning.
Can round windows withstand severe weather? Thompson Creek’s specialty windows are AAMA-tested to withstand winds up to 146 mph—exceeding requirements for hurricane zones. Our windows are specifically engineered for Mid-Atlantic weather extremes, from nor’easters to summer storms.
Why Choose Thompson Creek for Custom Round Windows
When you choose Thompson Creek for specialty window replacement, you work with a single company accountable for every step:
✅ Custom Manufacturing – Every window is built to your home’s exact specifications in our Maryland facility—no stock sizes or compromises
✅ 50-Year No-Hassle Warranty – Industry-leading coverage on both product and installation, serviced by our local team, not third-party contractors
✅ ENERGY STAR® Excellence – All windows exceed 2022 ENERGY STAR® criteria with proven energy savings in Mid-Atlantic climate conditions
✅ Weather-Tested Durability – AAMA-tested to withstand 146 mph winds and engineered for the region’s temperature extremes
✅ Complete Accountability – We design it, build it, install it, and service it—eliminating the confusion and delays of working with multiple vendors
✅ 40+ Years of Local Experience – Family-owned since 1980, with deep expertise serving Maryland, Virginia, and Washington DC homeowners
✅ Factory-Trained Installation – Our professional installers are employees, not subcontractors, ensuring consistent quality and accountability
Ready to enhance your home with custom round windows? Schedule your free consultation today and discover why Mid-Atlantic homeowners have trusted Thompson Creek for over 40 years. Our custom-manufactured specialty windows come with a 50-year warranty and professional installation you can count on.
