Sliding Patio Door Replacement in Denver, CO
A sliding patio door is the main link between your living space and your yard, deck or patio. Colorado Glass & Mirror installs Milgard and Pella sliding patio doors across Denver, with a full inspection of the frame and sill. Call 720-706-4572 any hour for a free measure.

A sliding patio door has one fixed panel and one panel that glides on a track. It saves swing space and brings in light. Colorado Glass & Mirror installs Milgard and Pella sliding patio doors across Denver and replaces the glass or the whole door and frame, whichever the job needs.

Sliding Patio Doors for Denver homes
Sliding doors keep the swing clear, which helps on small patios and decks. Large glass panels bring in daylight and a wide view, and the door can be set up to slide left or right. A good install keeps the track, sill and flashing sealed so water drains out and cold air stays out.
See all door stylesWhich replacement fits your sliding patio door?
Old patio doors often drag on worn rollers, leak air at the edges or fog between the panes. Fogged glass can be fixed with an IGU replacement. A rotted sill, bent frame or failed track is a case for a full frame replacement, so we can inspect the framing and flashing before the new door goes in.
Full-frame replacement
Replaces the door and frame down to the opening. Best for rot, drafts, water damage at the sill or a layout change.
IGU replacement
Replaces only the sealed glass unit in a door panel or sidelite. Best for fogged or cracked glass when the door and frame are sound.
How sliding patio doors compare
| Style | How it opens | Best for |
|---|---|---|
| Sliding Patio Doors | One panel glides on a track | Tight patios, wide views and easy use |
| French Doors | Two hinged panels swing open | Wide openings and a classic look |
| Entry Doors with Glass | Single hinged door with sidelites or a transom | Front entries and daylight in the foyer |
| 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
Sliding Patio Doors questions answered
Why is my sliding patio door hard to open?
Dirt in the track and worn rollers are common causes, and a bent frame or a dropped panel can also make it drag. Cleaning and new rollers help in some cases. An older door often needs replacing. We inspect it and tell you which makes sense.
Can I replace only the glass in my patio door?
Yes, when the frame and panels are in good shape. Fog between the panes means the seal failed, and an IGU replacement swaps the sealed glass unit. If the sill or frame is damaged or leaking, a full frame replacement fixes the cause. We check on site.
Which is better for my yard, a sliding door or a French door?
Sliding doors save space and give a wide view, which suits tight patios. French doors swing open and give a classic look, which suits wider openings with room to swing. We can compare both for your opening during the free measure.
Explore more from Colorado Glass and Mirror
Ready to replace your sliding patio door?
Call any hour or send us your project details. We will set up your measure.
