Double-Hung Window Types and Options
Two double-hung quotes can describe very different windows. These are the choices that separate them.

Tilt-In Double-Hung Replacement Units
In a modern double-hung, both sashes slide and both tilt in on pivots so you can wash the outside glass from the room. That matters most on a second floor or on a Fan rowhouse where the back windows face a narrow side yard. Replacement units are made to the measured opening, and HomeGuide's national guide puts them at $350 to $2,500 each installed. The span covers a basic vinyl insert at one end and a clad-wood full-frame unit with simulated divided lites at the other. Ask to open and tilt a sample before you order a houseful.

Single-Hung Units with a Fixed Top Sash
A single-hung looks the same from the street, but only the bottom sash moves. HomeGuide puts single-hung windows at $300 to $2,100 installed, a little under double-hung. You give up the top-sash vent and inside cleaning of the upper glass. On a first floor, where you can wash the glass from outside, that trade is often fine. Our view: put double-hungs on upper floors and in rooms where you'll want to vent hot air out the top, and save the money with single-hungs on the ground floor and in rentals.

Grille Patterns: Colonial, Prairie, Between the Glass and Simulated Divided Lites
Grilles carry the look of a house more than any other option. Colonial patterns (six-over-six, nine-over-nine) suit Georgian and Colonial Revival fronts. Prairie grilles, a border of narrow lites around a big center pane, fit Craftsman and foursquare houses. Two-over-two and one-over-one match many Victorian rowhouses. Grilles between the glass are sealed inside the insulated unit: easy to clean, but flat from outside. Simulated divided lites bond bars to both faces of the glass with a spacer between, so they cast real shadows. On a street of original sash, simulated divided lites are the closer match.

Blinds Between the Glass
Some double-hungs come with a slim blind sealed between the panes and worked by a slide on the sash. There are no cords, which helps in a child's room, and the slats never collect dust or grease, which helps in a kitchen. The catch is repair: if the blind's mechanism fails, the fix may mean a new sash or glass unit, not a new blind. Ask what a blind failure costs to fix before you choose it. On west-facing rooms that bake in a Richmond July afternoon, a lowered blind between the panes takes the glare off without a curtain.

Sash Balances: Block-and-Tackle, Spiral and Constant-Force
Balances are the springs hidden in the jambs that do what iron sash weights did in old wood windows. A block-and-tackle (channel) balance uses a spring and pulley inside a metal channel. A spiral balance uses a wound rod in a tube. A constant-force (coil) balance uses flat coil springs tied to a pivot shoe, giving the same pull at every height. Each is sized to the weight of the sash, which is why a heavy triple-pane sash needs heavier balances. When one side fails, a parts supplier's advice is to replace both sides together so the pull stays even.

Why Richmond homeowners call Richmond Expert Windows
- A single independent window contractor gets your request, never a lead auction
- Every opening is measured on site before a number is put on paper
- Ask for the quote in writing: unit series, glass package, install method
- Homeowners pay nothing for the referral or the visit
Double-Hung Windows and Fall Protection in Virginia
A double-hung's lower sash opens at sill height, so a low sill on an upper floor is the spot the code worries about. Virginia handles it in two places.
New windows (Virginia Residential Code R312.2.1)
When the sill of a window that opens sits under 18 inches off the floor inside and over 72 inches above the ground outside, Virginia gives two options: limit the opening so a 4-inch sphere can't pass, or fit an opening control or fall prevention device that meets ASTM F2090. The national model code sets that sill trigger at 24 inches; Virginia lowered it to 18.Replacement windows (Virginia Existing Building Code 304.2)
For Group R-2 and R-3 buildings, this section adds a trigger at replacement time. If the new window opens, comes with both a new sash and a new frame, has its sill under 36 inches from the floor and over 72 inches from the ground below, and would open past a 4-inch sphere, ASTM F2090 control devices go on. Once released, the device can't shrink the opening below the required egress size. The section names R-2 and R-3 buildings, so ask the installer and the city how it applies to your house.Bedrooms
Virginia allows ASTM F2090 control devices on emergency escape windows, provided they release from inside without keys, tools or special knowledge. Our egress windows page has the bedroom escape sizes.
Ask for opening control devices on any upstairs double-hung near a bed or a window seat, whether or not the code reaches your house. And on hot nights, lower the top sash instead of raising the bottom one: the room still vents.
Double-Hung Window Quotes: Line Items to Compare
HomeGuide's $350 to $2,500 national range is wide because a double-hung quote bundles a dozen choices. Ask each installer to write these out per window:
- 1
Insert or full-frame
And what each choice means for the casing inside and the trim outside. - 2
Frame and jamb liners
The frame material, and the color of the jamb liners the sashes slide in. They show when the window is open. - 3
Balance type
Block-and-tackle, spiral or constant-force, sized to the sash and glass you've picked. - 4
Locks
One or two per sash, plus tilt latches and any opening control devices. - 5
Grilles
Pattern, and whether they're between the glass or simulated divided lites. - 6
Glass package
Low-E type, gas fill and the NFRC U-factor and SHGC for the whole unit. - 7
Exterior capping
Whether old wood trim and brick returns get aluminum capping, and in what color. - 8
Lead-safe work and disposal
Containment and cleanup on a pre-1978 house, and haul-away of the old sash.
Double-Hung Windows in Older Richmond Houses: What to Weigh
Housing age
Census figures put roughly 71% of the city's housing units before 1980 and 28% before 1940. Many double-hung jobs here start with original wood sash, weights and pulleys. Some of that sash is worth restoring; our wood window restoration page covers when, along with the historic-district and lead-paint rules.Air leaks
The Department of Energy notes that hung windows generally leak more air than casements, and that leakage grows as weatherstripping wears. On a new double-hung, look at the weatherstripping and ask for two locks on wide sashes.Glass size
An insert gives up some glass to a second frame inside the old one. On narrow rowhouse windows that loss shows, so ask to see the visible glass size for insert and full-frame side by side.Ratings
For the U-factor and SHGC a new double-hung must meet here, see our energy-efficient windows page.
See Window Sash Replacement in Richmond, VA when the frames are sound and only the sashes need to go, and Casement Windows in Richmond, VA for a crank-out alternative over a counter or sink.
