The common styles, and where each one fits
Double-hung is the default in this region: two sashes that slide vertically and tilt in for cleaning, which is why it's the standard on second-story bedrooms. Casement windows crank outward and seal against the frame with compression, so they're the tightest style available, ideal over a kitchen sink or on a windward wall.
Awning windows hinge at the top and can stay open in light rain, which makes them useful in basements and bathrooms. Sliders are cost-effective on wide openings. Picture windows don't operate at all, which means the most glass and the best insulation value for the money.
- Double-hung: versatile, tilt-in cleaning, meets egress in most bedrooms
- Casement: tightest seal and best ventilation, needs clear exterior swing
- Awning: rain-tolerant ventilation, common in basements and baths
- Slider: economical on wide openings, easy operation, no swing clearance
- Picture: maximum glass and efficiency, no ventilation
- Bay and bow: adds usable sill depth and light, priced as an assembly
- Specialty shapes: arches, octagons, transoms, priced per unit
Egress, grids, and the details that get missed
Any bedroom window used for egress has to meet minimum clear-opening dimensions, and swapping a double-hung for a slider of the same rough size can quietly fail that requirement. Bring it up during the sales visit for basement and bedroom openings.
Grid patterns are the other detail that changes the look of the whole house. Colonial, prairie, and diamond patterns each read differently, and grids between the glass panes clean far more easily than surface-applied ones. Matching the pattern across the front elevation matters more than matching it everywhere.
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Frequently asked questions
Which window style is the most energy efficient?+
Picture windows, because they don't open. Among operable styles, casement and awning seal tightest since the sash compresses against the frame when closed. Double-hung and slider windows rely on brush weatherstripping and leak slightly more air.
Can I change the style of a window when I replace it?+
Yes, within the existing rough opening, though changing operation style may require a full-frame replacement and can affect egress compliance in bedrooms and basements.
Do grids reduce energy efficiency?+
Grids between the panes have a negligible effect on performance and are the easiest to clean. Exterior applied grids can create small thermal bridges but the difference is minor compared to the glass package itself.
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