A basement bedroom window that looks out on a rusty, shadowed steel wall is a gloomy thing to wake up to. A window well liner is the product most people find first when they search for a fix. It is a decorative insert that sits against the inside of the well, usually printed or molded to look like stone, sky or a garden.
Before you buy one, it helps to know what a liner actually does, what it does not do, and what else can add light to a below-grade window. If your well is also rusted, bowing or undersized, the liner is the wrong first purchase. When you want a straight answer for your house, call (402) 261-0485 or request a free written estimate.
What a window well liner is
A window well liner is a thin sheet or molded shell that lines the inside surface of the well. It does not hold back soil. The well still does that. The liner covers the corrugated metal or plastic wall with a more pleasant surface.
Window Well Supply describes its liners as decorative inserts that add privacy, shield the well from rain, snow and debris, and add an insulating layer. Its liner page lists printed liners from $108.95. That is the seller’s published listing price for those products, not a price from us.
Liners come in three broad styles:
- Printed vinyl or plastic sheets with a scene, such as sky, water or a flower bed, cut to the well’s width and height.
- Molded inserts that look like rock or stone and press into the well.
- Plain light-colored liners that skip the scene and put a pale surface where a dark one used to be.
Does a liner really make the room brighter?
Sometimes, a little. A liner changes the color and finish of the surface your window faces. It does not add glass, and it does not change how much sky the well can see.
Lawrence Berkeley National Laboratory’s tips for daylighting with windows says light-colored surfaces reflect more daylight than dark ones. It also warns that mirror-like surfaces can cause glare when you look straight at them, and recommends matte finishes for even light. That is general building guidance, not a test of window well liners, but it points one way.
For a well, that suggests a few things:
- A pale, matte liner is a better bet for light than a dark scenic print.
- Bright mirror-finish material is more likely to throw glare than soft light.
- The effect is strongest when the sun can actually reach the well. A shaded north-side well gets less out of any liner.
- Several makers market liners as light-reflecting, but marketing copy is not a measurement. One maker says only that a liner can reflect light into your basement, with no numbers behind it (Windowell Expressions). Ask a seller for specifics before paying extra for a reflectivity claim.
A liner is mostly a view upgrade. If your complaint is that you are staring at a rusted wall, a liner can help. If your complaint is that the room feels dark, it is one small piece.
Galvanized, steel or composite: will a liner fit?
This is the question the product pages answer least well. The Window Well Supply page filters liners by well material, and the only material listed is steel. It does not say whether a given liner fits a galvanized, painted steel or composite well, and it gives no installation instructions. The Windowell Expressions article does not address metal wells at all.
So treat fit as something to confirm, not assume. Here is what to check:
- Well shape. Most steel wells are corrugated and curved. A flat sheet liner has to be sized to the width and projection of the well, and manufacturer sizes come in steps (the listings above show sizes like 80 by 40 inches and 120 by 60 inches).
- Attachment. Ask how the liner is held in place. Some tuck behind the well’s top lip, some fasten to the corrugations. Anything that needs holes in the well should be sealed so you are not creating rust spots.
- Material compatibility. Ask the seller whether there is any warning about moisture trapped between the liner and the metal.
- Composite and plastic wells. These have different wall shapes. If you are comparing well materials, our window well material comparison covers how they differ.
If the well is already corroded or leaning, fix that first. A liner on a failing wall only hides the problem for a season or two. Replacing the well itself typically runs $600 to $1,500, and our window well installation page explains how that job works.
Will a liner change your egress dimensions?
It can, and this matters if the window is the bedroom’s emergency exit.
The IRC requires an egress window well to give a minimum horizontal area of 9 square feet, with a minimum projection and width of 36 inches. If the well is deeper than 44 inches, it also needs a ladder or steps. We walk through those numbers in our guide to window well size requirements in Nebraska.
A thin sheet liner takes up almost no room. A thick molded insert, or a decorative pile of stone, can. Say your well only just meets the 36-inch projection. A bulky insert could be what pushes it under. A few simple rules apply:
- Measure the well with the liner installed, not before.
- Keep the liner clear of any ladder rungs or steps. If you cannot reach or grip a rung, the liner has to be trimmed or moved.
- Do not let the liner overhang the window opening or block the sash from opening fully.
- Keep every decorative item out of the escape path. The exit has to work without keys, tools or special knowledge.
The Window Well Supply liner page shows an “Egress Rated” filter, but it does not explain what that label covers. Ask the seller exactly what it means before relying on it.
Drainage: do not seal the bottom
A liner is a wall treatment. It should not become a basin liner.
Most wells drain through gravel at the bottom and, in some houses, a pipe to the footing drain. Anything that covers that gravel or blocks the drain outlet can turn the well into a bathtub the next time a spring storm rolls through. Lincoln has clay soils and a long freeze-thaw season, so wells here already deal with plenty of water. Our guide to how window well drainage works explains what the bottom of a well is supposed to do.
When you install a liner:
- Stop it above the gravel, not through it.
- Leave any drain opening exposed.
- Check after the first heavy rain or snowmelt that water still drains away.
- Pull it out and clean behind it each fall. Leaves and dirt collect in the gap between a liner and the well wall.
If a well is already flooding, a liner will not fix it. That is a grading, drain or foundation question. Foundation repair and waterproofing are outside what we do, and a waterproofing contractor is the right call.
Other ways to brighten a basement window
If light is the real goal, a liner is one option of several. Roughly in order of how much they matter:
Use a clear cover. A solid or dirty cover blocks light. A clear polycarbonate cover lets daylight through, and our window well cover types guide compares the options. A cover or ladder add-on typically runs $150 to $600.
Clean the glass and trim the plants. It is the cheapest step on the list. A window that has not been washed in years loses light, and shrubs that creep over the well rim shade it.
Paint the well interior. If the inside surface is dark or rusty metal, a light, matte coat of exterior metal paint can do much of what a liner does. Use a product rated for outdoor metal and follow the can’s prep instructions.
Use a pale ground surface. Light-colored gravel at the bottom reflects some daylight upward. Keep it level and well below the window sill so water still drains and the sill stays visible.
Skip the mirror. Window well mirrors come up in searches, but a mirror in a well can throw glare, can break, and puts hard edges in the escape route. A matte light surface is a safer way to do the same job.
Add light after dark. Daylight is only half the story. A hardwired or solar fixture lights the well at night. We cover that in window well lighting options, so we will not repeat it here.
Go bigger on the window. If the room is a bedroom and the window is small, a larger egress window lets in far more light than any liner, and it gives you a legal exit. For an existing opening, egress window replacement typically runs $1,200 to $3,000, and a new cut-in is typically $3,500 to $7,000. See egress window cost for the full picture.
Window well ideas that do not break the rules
Searches for window well ideas and decor turn up gravel beds, planters and fake rock. Some of that is fine and some of it is a problem.
- Outside the well: Plantings, edging and mulch around the rim are fine as long as soil and water slope away from the well. Do not let roots work into the walls.
- Inside the well: Keep it clear. Decorative stones, pots, figurines and furniture all belong somewhere else.
- The cover: Choose one that opens easily from the inside. Anything that needs a key or tool to open is not compatible with an emergency exit.
A quick way to decide
If the well is in good shape and the window is already a legal egress size, a light-colored liner or a coat of paint is a reasonable upgrade. If the well is rusted, bowed, undersized or flooding, replace or repair the well first. If the window itself is too small, a liner will not fix that.
We install egress windows and window wells, and we pull the permit when a job needs one. We do not sell liners as a stand-alone service, but we can look at your well and tell you what is worth doing. If you are weighing a liner against a bigger change, request a free written estimate and we will look at the actual window and well.
Frequently Asked Questions
What is a window well liner?
A window well liner is a decorative insert that lines the inside wall of a window well. It covers rusty or plain metal with a printed, molded or plain light-colored surface. It does not replace the well or hold back soil.
Does a window well liner let in more light?
It can help a little if it is a light, matte color and the well gets direct sun. Lawrence Berkeley National Laboratory’s daylighting guidance says light surfaces reflect more daylight than dark ones. A liner does not add any glass area, so a bigger window or a clear cover usually makes more difference.
Will a liner fit my galvanized or composite well?
Check with the seller before you buy. The manufacturer and retailer pages we reviewed did not say which well materials each liner fits, only that liners are sized by width and projection. Ask how it attaches and whether it needs holes in the well.
Can a liner affect egress or drainage?
Yes. A bulky liner or decorations can reduce the usable well area, and anything covering the bottom gravel or drain opening can trap water. The IRC calls for 9 square feet of well area with a 36 inch projection and width, so measure with the liner in place.
Should I replace the well instead of adding a liner?
If the well is rusted through, bowing or letting water in, replace it. Replacing a well typically runs $600 to $1,500. A liner only improves the look and surface of a sound well.