What actually separates a double-hung from a casement
Both come in vinyl, fiberglass, composite and clad wood, and both can be ordered with identical glass. The difference is how the sash moves, and every practical consequence comes out of that one detail.
Two sliding sashes versus one hinged sash
A double-hung has an upper and a lower sash that slide vertically in the jamb, held at any height by a balance system buried in the frame. Both sashes tilt inward. A casement is a single sash hinged on one side that swings outward on steel arms when you turn a crank.
So a double-hung opens to about half its glass height at most. A casement opens to nearly the full opening. On the same rough opening the casement also gives more glass, because it has no meeting rail cutting across the middle. On a common 36 by 60 opening that is usually somewhere around 10 to 15 percent more daylight.
How each one seals against a January wind
A double-hung seals with weatherstripping that the sash slides past. It has to stay loose enough to slide, and that is the compromise. A casement seals by compression: the crank pulls the sash into the frame and the lock squeezes it against a gasket, the way a refrigerator door closes.
The NFRC label shows it. Casements commonly post an air leakage rating of 0.05 to 0.1 cubic feet per minute per square foot. Double-hungs from the same product family more often land between 0.1 and 0.3. Both pass code and both are fine windows. On a windy 10 degree night, the difference is what you feel with the back of your hand held near the meeting rail.
Where double-hung is still the right call in Saxony
Most of central Indiana was built around double-hungs, and for a lot of openings they are the better window, not just the cheaper one.
- Anywhere the sash would swing into traffic. A casement projects 15 to 20 inches. Over a front walk, a driveway apron, a deck, a patio table or a side yard the mower passes through, that is a hazard and a bent operator arm waiting to happen.
- Rooms that get a window air conditioner. A double-hung takes a standard unit. A casement will not, and the workaround costs more than the window.
- Street-facing walls on traditional houses. Colonials, Cape Cods, foursquares and most brick ranches read wrong with casements on the front.
- Second-story openings you plan to clean yourself. Both sashes tilt in, so nobody sets a ladder.
- Exposed west and southwest walls. Indiana storm season brings straight-line gusts, and an open casement is a rigid sail on a small gearbox.
Three things to check before you sign
- Stand outside where the sash would swing. Measure from the wall to the nearest obstruction. Under about 24 inches of clear space, the casement is off the table for that opening.
- Get the net clear opening in writing for every bedroom. Not the rough opening and not the unit size. The clear opening left after the sash is fully open.
- Ask what a replacement operator costs and whether it is a current catalog part. A contractor who cannot answer that has not thought past install day.
If you wait another year, nothing dramatic happens to a window that still works. But a bedroom that does not meet egress today still will not next year, and a kitchen window nobody can reach stays shut through another humid Indiana summer, which is precisely when a house needs to move air.
Installed price bands for Saxony in 2026
These are what most homeowners here are seeing in 2026 for a standard-size replacement, installed, insert-style into a sound existing frame.
| Frame material | Double-hung | Casement |
|---|---|---|
| Vinyl, mid grade | $600 to $1,050 | $750 to $1,300 |
| Fiberglass or composite | $900 to $1,550 | $1,050 to $1,800 |
| Clad wood | $1,300 to $2,400 | $1,500 to $2,800 |
The casement premium is usually 15 to 25 percent, and it comes from the operator, the hinge arms, the multipoint lock and the heavier frame needed to carry a swinging sash. Add $150 to $400 per opening if the job goes full-frame instead of insert, which is common in pre-1950 houses with soft sills.
A worked example. A 1965 ranch with 13 openings, mid-grade vinyl, insert install, no rot: all double-hung typically lands somewhere between $9,000 and $14,000, and all casement pushes the same house to roughly $11,000 to $17,500. Swapping only the two kitchen openings and one basement egress opening to casement adds a few hundred dollars, not a few thousand.
The mixed order most Saxony houses end up with
Once the trade-offs are on the table, the plan that survives is rarely all of one style. It is double-hung on every street-facing wall and every opening where the sash could swing into something, a casement over the kitchen sink, a casement in the basement egress opening, and sometimes a casement pair on a rear wall where the view matters and nothing sits underneath.
Manufacturers build both styles on the same frame platform in the same exterior colors, so a mixed order does not read as mixed from the curb once the grille pattern and color match. Ask to see the two side by side, because a casement frame is often visibly narrower.
Living with each one: screens, cleaning, hardware
Screens and what you look through
A double-hung screen covers only the half that opens and sits outside the glass. A casement screen covers the full opening and sits inside, so you look through it whenever it is installed, and it collects cooking film near a range.
Cleaning a second-story opening
Double-hung: tilt both sashes in, wipe, done. Casement: reach through the opening and wash the outside face by hand. On a first floor that is nothing. On a second story over a porch roof it is awkward, and on a wide unit you may not reach the far corner at all unless the window was ordered with egress hinges that stand the sash off the frame.
The part that fails first
On a double-hung it is the balance system, which shows up as a sash that will not stay up, and the plastic tilt latches, which snap. Both are cheap and usually in stock. On a casement it is the operator gearbox, typically somewhere past year 15, and that part is brand and line specific. If the line has been discontinued, sourcing an operator for a 20-year-old casement can take weeks or turn into a sash replacement. That cost never appears in a showroom comparison.
Where a casement earns the extra money
Over a sink, a counter or a tub
Reaching across 25 inches of countertop to lift a sash is the most common reason a kitchen window quietly stops getting opened. A crank handle is a wrist movement. The same argument applies over a garden tub, behind a laundry counter, or anywhere the sill sits above 40 inches with something in front of it.
Bedrooms and basements that have to meet egress
Emergency escape openings in Indiana follow the IRC: 5.7 square feet of net clear opening in most bedrooms, 5.0 square feet for openings at grade, a minimum clear height of 24 inches, a minimum clear width of 20 inches, and a sill no more than 44 inches above the finished floor. Confirm the requirements that apply to your project with your local building department, because that is who inspects it.
The catch is that a double-hung gives you only the lower sash. Clearing 5.7 square feet generally takes a unit around 32 inches wide by 56 inches of glass height or larger. A casement clears the same requirement in a much smaller opening because the whole sash swings away. In a finished basement bedroom, or a small upstairs bedroom in a 1940s house where the framing is fixed, a casement is often the only way to make the room legal without cutting the wall open.
Rooms where you want the breeze scooped in
An open casement acts like a scoop for wind running parallel to the wall. On a shaded north or east elevation that is genuine ventilation in May and again in late September, the two stretches when a lot of Indiana houses would rather not run the air conditioning.