What Affects the Cost of Replacing Window Glass?
The cost of replacing window glass comes down to six things: the size of the glass, whether it is single pane or a sealed double pane unit, the type of glass (low-E, tempered or laminated), how easy the window is to reach, the condition of the frame, and how many panes are done at once. Here is how each one moves the price, how to check which apply to your window, and what to send us for an accurate free estimate.
- Window glass replacement across the DMV
- Free estimates
- 24/7 emergency service
The six things that set the price
Two windows that look the same from the street can need very different glass. These are what we look at for every quote.
1. Size and shape
Bigger glass costs more, and it is heavier to handle. Odd shapes, arches and circles take more cutting time than a plain rectangle.
2. Single pane or double pane
A single pane is one sheet cut to size. A double pane window has a sealed unit with two sheets, a spacer and often gas between them, built to order for your frame. If the unit has fogged, see what sets the cost to fix a foggy window.
3. Type of glass
Low-E coatings, tinted, frosted and obscure glass all cost more than clear glass. Laminated glass costs more than tempered.
4. Safety glass required
Glass in a door, next to a door, near a tub or in a large low window must be tempered or laminated. Tempered glass is made to order, so it can’t be cut on the spot.
5. Access and height
A ground floor window with room to work is the simplest job. Upper floors, stairwells and windows above roofs or plantings take more time and equipment.
6. Frame condition and window style
Glass in a solid frame goes in cleanly. Rotted wood, a bent sash, broken glazing beads or grids between the panes add work.
How to tell which ones apply to your window
- Look at the edge of the glass. Two sheets with a metal or dark strip between them means a sealed double pane unit. See our double pane glass replacement page for how those are replaced.
- Check the corners for a stamp. A small etched mark usually means tempered glass, and the new glass will need to be tempered too.
- Look for a sticker or print on the spacer. Many sealed units have the maker and date printed on the strip between the panes. A photo of it helps.
- Hold a lighter flame near the glass and look at the small reflections. If one of them has a slightly different color, the glass likely has a low-E coating.
- Open and close the window. If it sticks, the wood is soft, or the lock doesn’t line up, mention it. The frame may need work while the glass is out.
Single pane vs double pane: why it matters most
Usually the simplest job: the old glass comes out, new glass is cut to size and set in fresh glazing. Common in older homes, storm windows and basement windows.
The whole sealed unit is replaced, made to the size of your frame. Low-E coating and gas fill are chosen to match or improve on what you had.
If you are replacing a sealed unit anyway, it is a good moment to choose better glass. ENERGY STAR explains how windows, doors and skylights are rated for energy performance, with different targets for different climate zones. Our low-E glass page covers the coatings in plain terms.
What keeps the cost down
- Replace the glass, not the window. When the frame is sound, new glass in the old frame usually costs much less than a new window. Our window glass repair page explains when that works.
- Do several panes at one visit. One trip to measure and one to install covers them all.
- Fix small frame problems early. A sticking sash or soft wood is cheaper to fix before it cracks the next pane.
- Board up first if it can wait. After hours, an emergency board up makes the opening safe, and the glass can then be ordered at the right size and type.
What to send for an accurate quote
Good photos help us give you a closer estimate from the start. Send us:
- A photo of the whole window, inside and outside
- A close photo of a corner of the glass, to show any stamp
- A photo of the edge, to show single or double pane
- Rough width and height of the glass you can see
- Which floor it is on, and what is under the window outside
We measure on site before anything is ordered, so you don’t need exact numbers, though our guide on how to measure window glass shows how if you want to. The estimate is free, and new installs come with a 90 day warranty.
Window glass cost questions
More questions? Browse our glass repair FAQ or contact us.
What affects the cost of replacing window glass?
The size and shape of the glass, single pane or double pane, the type of glass, whether safety glass is required, how easy the window is to reach, and the condition of the frame.
Is it cheaper to replace the glass or the whole window?
Replacing only the glass is usually cheaper when the frame is in good shape. A new window makes more sense when the frame is rotted or warped, or several panes are failing.
Why does double pane glass cost more to replace?
A double pane window has a sealed unit with two sheets, a spacer and often gas between them. It is built to order for your frame, instead of being cut from a single sheet.
Does tempered glass cost more?
Yes, tempered glass costs more than ordinary glass and it is made to order, because it can’t be cut after it is tempered. It is required in doors and other spots set by the building code.
Can I get a quote from photos?
Yes. Photos of the whole window, a corner of the glass and the edge help us give a close estimate. We measure on site before ordering, and the estimate is free.
Want a price for your window?
Send a few photos, or call (202) 600-6220 for a free estimate.