Double Hung Window Replacement in Denver, CO
Double hung windows are the classic choice for Denver brick homes, bungalows and traditional builds. Colorado Glass & Mirror measures on site and installs Milgard and Pella double hung windows, either as a full-frame replacement or a glass-only repair. Call 720-706-4572 any hour.

A double hung window has two sashes that slide up and down, and most tilt inward for easy cleaning. Colorado Glass & Mirror installs Milgard and Pella double hung windows across Denver and tells you whether your home needs a full-frame replacement or just new glass.

Double Hung Windows for Denver homes
Both sashes move, so you can open the top for warm air to escape and the bottom for fresh air to enter. The tilt-in sashes make the outside glass easy to clean from indoors, which matters on upper floors. The look suits older Denver homes in neighborhoods like Park Hill, Highland and Wash Park, where matching the original style is often the goal.
See all window stylesWhich replacement fits your double hung window?
Older double hung windows often fail in two ways. The balance system wears out and the sash will not stay up, or the seal between the panes fails and fog builds inside the glass. Fog alone points to a glass-only IGU replacement. Rot, drafts or a warped frame point to a full-frame replacement. We look at both before we quote.
Full-frame replacement
Replaces the whole window, frame included. Best for rot, drafts, water damage or a change in size or style.
IGU replacement
Replaces only the sealed glass unit. Best for fogged or cracked glass when the frame and sash are in good shape.
How double hung windows compare
| Style | How it opens | Best for |
|---|---|---|
| Double Hung Windows | Both sashes slide up and down | Traditional homes and easy cleaning |
| Single Hung Windows | Bottom sash slides up | Simple build and bedrooms or basements |
| Casement Windows | Hinged at the side and opens outward | Tight seal and hard to reach spots |
| Sliding Windows | Sash glides side to side | Wide openings and easy use |
From first call to final fit
Call or request a quote
Reach us any hour at 720-706-4572 or use the quote form.
We measure on site
We check your walls, opening and window frames in person.
Your glass is made to fit
Glass and windows are ordered to your exact measurements.
Local team installs
Our crew installs, checks the fit and cleans up.
Why Denver homeowners call us
Double Hung Windows questions answered
Should I replace the whole double hung window or only the glass?
It depends on the frame. If the frame and sashes are solid and only the seal failed, a glass-only IGU replacement saves money. If you see rot, water stains or drafts, a full-frame replacement fixes the cause. We inspect your windows on site and tell you which option makes sense.
Can double hung windows match the style of my older Denver home?
Yes. Double hung is the traditional look, and both Milgard and Pella offer options that suit older homes. If your home sits in a historic district, check the exterior rules before you order. We can help you ask the right questions and plan the install around them.
Do double hung windows still work when they stick or will not stay open?
A sash that sticks or will not stay up usually has a worn balance or a swollen frame. Sometimes a repair solves it, but old units often need replacing. We check the frame, the balances and the glass, then give you a clear recommendation and a quote.
Explore more from Colorado Glass and Mirror
Ready to replace your double hung window?
Call any hour or send us your project details. We will set up your measure.
