Our team spent three months testing window well covers on homes across the Midwest and Mountain West to find out which ones actually hold up against wind, snow, and debris. After evaluating dozens of options, we narrowed our list to the 10 best window well covers available right now.
If you have basement windows, you already know the problem. Leaves pile up in the wells. Rain floods in. Small animals find their way inside. And those cheap plastic covers from the hardware store blow off in the first strong wind. We have been there, and so have thousands of homeowners on Reddit and DIY forums who share the same frustration.
The good news is that polycarbonate covers have gotten significantly better in 2026. They are heavier, clearer, and more wind-resistant than ever before. In this guide, we break down the 10 covers that actually work, cover the key differences between polycarbonate and steel grate options, and help you find the right fit for your home.
Top 3 Picks for Best Window Well Covers
Vercraft 2-Piece Polycarbonate Set
- Heavy-duty clear polycarbonate
- UV resistant anti-yellowing
- Mounting clips included
- 2 covers per set
QIPRAONO Heavy-Duty with Splash Guard
- 15 size options
- Built-in 2-inch splash guard
- UV resistant coating
- Prime eligible
Window Well Supply Sloped Semi-Circle
- 500 lb weight capacity
- Rust-free aluminum bracing
- Commercial grade
- Sloped semi-circle design
Best Window Well Covers in 2026
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Vercraft 2-Piece Polycarbonate Set
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SANDALIM Clear Polycarbonate Cover
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Vercraft Single Heavy-Duty Cover
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CC LOT Premium Polycarbonate Cover
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Window Well Supply Semi-Circle
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Adjust-A-Grate Model L6 Aluminum
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Threlaco UV Resistant Cover
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Window Well Supply Sloped Elongated
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SANDALIM 2-Pack Polycarbonate
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QIPRAONO Heavy-Duty Splash Guard
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Check Latest Price |
1. Vercraft 2-Piece Polycarbonate Set – Best Overall for Value and Quality
Vercraft 2 Pcs 39"L x 16"W Basement Window Well Covers with Mounting Clip Heavy-Duty Clear Polycarbonate Egress Window Cover Outside All-Weather Against Debris UV Resistant Protects Tear-Resistant
2 covers per set
39 x 16 inches
Clear polycarbonate
UV resistant and anti-yellowing
4.5mm thickness
Mounting clips included
Pros
- Sturdy and heavy enough to not blow away
- Much better quality than cheap plastic covers
- Blocks debris and small critters effectively
- Clear view allows natural sunlight
- Easy to clean with soap and water
Cons
- Some users needed self-tapping screws instead of included clips
- Instructions on hole size could be clearer
I installed this Vercraft 2-piece set on a relative’s home last fall, replacing the flimsy big-box-store covers that kept flying off during Midwest windstorms. The difference was immediate. These covers weigh about 10 pounds each, which is heavy enough to stay put without needing excessive anchoring.
The polycarbonate material is crystal clear, so natural light still pours into the basement. That matters more than you might think. One Reddit user we came across said it perfectly: polycarbonate is the way to go because it lets light in while blocking debris. I power-wash mine once or twice a year and they still look new.
What sets this set apart is that you get two covers for less than what some brands charge for one. Each cover measures 39 inches long by 16 inches wide, which fits most standard metal and composite window wells. The UV-resistant coating prevents the yellowing that plagues cheaper covers after a season or two in direct sun.
Installation was straightforward with the included mounting clips. However, a few users on Amazon mentioned they switched to self-tapping screws for a more secure hold. If you live in a high-wind area, that is a smart upgrade worth considering.
Best for Standard-Sized Window Wells
This set shines if you have two standard-sized basement window wells that need covering at the same time. The 39 x 16 inch dimensions cover most common residential wells without modification. You save money buying the pair instead of two individual covers.
The 4.5mm thickness provides solid rigidity against snow loads and falling branches. I would not recommend standing on them, but they handle everything nature throws at them during typical use.
Not Ideal for Custom or Oversized Wells
If your window wells are unusually shaped, extra deep, or wider than 40 inches, this set will not work without modification. The covers come in one fixed size, so you would need to look at brands offering multiple size options instead. CC LOT and QIPRAONO both offer significantly more size choices.
Also note that these are cover-only products. The window well itself is not included, which is standard for this category but worth clarifying for first-time buyers.
2. SANDALIM Clear Polycarbonate Cover – Best for Size Variety
SANDALIM Clear Window Well Covers Outside 39" X 16", Heavy Duty Polycarbonate Basement/Egress Window Well Cover, UV Resistant, Tear-Resistant, Waterproof, Windproof (Only Cover)
39 x 16 inches
Clear polycarbonate
9 size options
UV resistant
Waterproof and windproof
6.49 lbs
Pros
- 9 different size options for precise fit
- Clear design allows natural sunlight
- Blocks leaves dirt and moisture
- Modern low-profile design
- Easy installation on standard wells
Cons
- Some customers may need custom fitting for non-standard wells
What caught my attention with the SANDALIM cover is the range of sizes available. Nine options means you have a real shot at finding a cover that fits your specific window well without gaps or overhangs. That fit issue is one of the biggest pain points homeowners discuss on DIY forums.
The polycarbonate construction is solid and clear, letting plenty of light through. At 6.49 pounds, it is lighter than the Vercraft 2-pack covers but still substantial enough to resist moderate winds. The UV-resistant coating holds up well against sun exposure without yellowing.
I tested this cover through a full rainy season, and the waterproof and windproof claims held up. Water rolled off the sloped surface and drained away from the foundation. No leaks, no pooling, and no debris getting through. The low-profile design also looks clean from the exterior.
One thing to keep in mind is that this is a cover-only product with no mounting hardware included. You will need your own screws or clips. Several Amazon reviewers mentioned this, so factor that into your total cost.
Best for Hard-to-Fit Window Wells
The nine size options make this the go-to choice if your window wells are not standard dimensions. Measure carefully across the widest point and the deepest projection of your well. SANDALIM likely has a size that matches closely.
The modern low-profile look blends well with most home exteriors. You barely notice these covers from the yard, which is exactly what many homeowners want.
Installation Requires Your Own Hardware
Since this is a cover-only product, budget a few extra dollars for stainless steel screws or mounting clips. A DIY forum user shared that they spent about $10 on hardware per cover, which is a reasonable addition. The cover material itself drills easily with standard bits.
If you prefer an all-in-one package with hardware included, look at the CC LOT or QIPRAONO options instead. Both come with mounting hardware right out of the box.
3. Vercraft Single Heavy-Duty Cover – Best Single Cover for Durability
Vercraft 40"L x 16"W Basement Window Well Covers with Mounting Clip Heavy-Duty Clear Polycarbonate Egress Window Cover Outside All-Weather Against Debris UV Resistant Protects Tear-Resistant
40 x 16 inches
Single cover
Clear polycarbonate
UV resistant
Impact resistant
5 stainless steel clip sets included
5.29 lbs
Pros
- Sturdy construction blocks debris and critters
- Clear polycarbonate allows natural light
- Easy to wash and reuse
- 5 mounting clip sets included
- UV resistant and anti-yellowing
Cons
- Single unit only not a multi-pack
- Fixed size with no size options
This is the single-cover version of the Vercraft set we reviewed above. It shares the same heavy-duty polycarbonate construction and UV-resistant coating, just packaged as one unit instead of two. The 40 x 16 inch dimensions are slightly larger than the 2-pack version, giving you an extra inch of coverage length.
I found this cover to be slightly lighter at 5.29 pounds compared to the 2-pack covers, but it still feels rigid and well-built. The 4.5mm thickness matches the set version. Five sets of stainless steel mounting clips come included, which is a nice touch since SANDALIM charges extra for that.
The anti-yellowing properties are what sold me on recommending this as a standalone pick. Too many polycarbonate covers turn cloudy and yellow within a year, blocking the natural light they are supposed to let through. Vercraft’s UV treatment prevents that degradation effectively.
Best for Replacing a Single Damaged Cover
If only one of your window well covers needs replacing, buying a 2-pack wastes money. This single unit gives you the same Vercraft quality without paying for a second cover you do not need. It is a practical choice for targeted replacements.
The included mounting clips mean you have everything you need for installation right out of the box. No extra hardware runs to the store required.
Limited Size Flexibility
The main drawback is the lack of size options. This cover comes in one fixed 40 x 16 inch size. If your well is wider, narrower, or deeper than standard, you will need to look elsewhere. The QIPRAONO cover offers 15 sizes for comparison.
For most standard residential window wells, the 40 x 16 dimensions work perfectly. Just measure before ordering to avoid surprises.
4. CC LOT Premium Polycarbonate Cover – Best for Multiple Size Options
Basement Window Well Covers, Egress Window Well Cover Outside, Heavy Duty Clear Polycarbonate, UV Resistant, Windproof, Waterproof/Only Cover (42" L X 18" W)
42 x 18 inches
Premium crystal clear polycarbonate
UV resistant technology
Windproof and waterproof
Hardware and instructions included
4.8 lbs
10+ size options
Pros
- Crystal clear polycarbonate lets in natural light
- UV resistant prevents yellowing
- Hardware and instructions included
- Over 10 size options available
- Adds layer of security
Cons
- Limited stock availability
- Window well itself not included
CC LOT offers something most competitors do not: over 10 size options in the same product line. The 42 x 18 inch version I tested fits slightly larger window wells that the standard 39-inch covers cannot handle. That extra width and depth make a real difference for wider basement windows.
The premium crystal-clear polycarbonate is noticeably thick and rigid. At 4.8 pounds, it is lighter than some competitors but still sturdy enough to stay in place during moderate winds. The UV-resistant technology uses what CC LOT describes as advanced formulations to prevent yellowing.
Installation was smooth thanks to the included hardware and instructions. Not every brand includes instructions, and I have seen homeowners on forums struggle with covers that arrive with no guidance. CC LOT solves that problem.
Best for Larger or Non-Standard Window Wells
If your window wells are bigger than typical, start your search here. The range of over 10 sizes means you can find a match for wells that other brands simply do not cover. Measure your well’s width and projection depth, then check CC LOT’s size chart.
The windproof and waterproof design held up during my testing period. Water sheeted off cleanly without pooling, and the cover stayed anchored through several storms.
Watch Stock Levels Before Ordering
The one concern with CC LOT is availability. Some sizes show limited stock warnings on Amazon. If you find the right size, order it promptly rather than waiting. The good news is that all necessary hardware ships with the cover, so you will not need to source anything separately.
Also remember that this is a cover-only product. The window well liner itself is not included, which is standard across all products in this roundup.
5. Window Well Supply Sloped Semi-Circle – Best Premium Polycarbonate Cover
Clear Polycarbonate Window Well Cover Sloped Semi-Circle 40" W x 16" L - Heavy Duty Basement Window Well Covers Outside Protection from Debris, UV-Resistant with Rust-Free Aluminum Bracing
40 W x 16 L inches
Sloped semi-circle design
Commercial grade polycarbonate
Rust-free aluminum bracing
Supports 500 lbs
UV resistance coating
Pros
- Supports up to 500 lbs of weight
- Rust-free aluminum bracing for longevity
- UV-resistance coating for sun protection
- Heavy-duty commercial grade construction
- Hardware included with purchase
Cons
- Not Prime eligible
- Ships within 2-3 days longer than Prime
This is the cover I recommend when budget is less of a concern and you want maximum durability. Window Well Supply builds this to commercial grade standards with a sloped semi-circle design that sheds water and snow efficiently. The rust-free aluminum bracing adds structural rigidity that pure polycarbonate covers cannot match.
The 500-pound weight capacity is exceptional. That is well above the 400-pound standard that quality covers aim for. You could accidentally step on this cover without cracking it, though I would not make a habit of it. The aluminum bracing distributes weight across the entire surface.
I installed this on a home in a heavy snow zone, and it handled the winter without any issues. Snow slid off the sloped design rather than accumulating. The UV-resistance coating kept the polycarbonate crystal clear through months of intense high-altitude sun exposure.
With 135 reviews and a 4.5-star rating, this is one of the most reviewed covers on our list. The feedback is consistently positive about durability and longevity. Several reviewers mentioned their covers lasting multiple years without degradation.
Best for Heavy Snow and High-Traffic Areas
If you live in a region with heavy snowfall, the 500-pound capacity and sloped design make this the clear winner. Snow loads can crush lighter covers, but this one handles the pressure. The aluminum bracing prevents the flexing that leads to cracking in cheaper covers.
The semi-circle shape also works well for curved window wells where flat covers leave gaps. The sloped design channels water and debris away from the window opening.
Shipping Takes Longer Than Prime
The main drawback is that this cover is not Prime eligible. It ships within 2-3 days via standard shipping, so plan ahead. If you need a cover urgently before a storm, a Prime-eligible option like the Vercraft or QIPRAONO might be more practical.
The higher price point reflects the commercial-grade construction and aluminum bracing. For homeowners who want a cover that lasts a decade rather than a season, the investment pays off.
6. Adjust-A-Grate Model L6 Aluminum Grate – Best Steel Grate Option
Adjust-A-Grate Window Well Grate - Model L6 - Fits Metal Window Wells with Large Radius Front Corners (22"-25" D) x (45"-60" W)
Aluminum grate
Fits 22-25 inch depth x 45-60 inch width
400 lb capacity
Tempered aluminum
Made in USA
18 lbs
Allows 90% sunlight
Pros
- High quality tempered aluminum
- Lightweight for emergency removal
- Allows 90% natural sunlight
- Adjusts to fit various contours
- Made in the USA
Cons
- Not for wood concrete or block rectangular wells
- Higher price point for grate style
The Adjust-A-Grate is the only steel grate option on our list, and it earns its spot. Unlike polycarbonate covers that block weather entirely, this aluminum grate lets air and light through while preventing falls and keeping large debris out. It supports 400 pounds and allows up to 90% of natural sunlight to reach your basement.
I tested this grate on metal window wells with large radius front corners, which is exactly what it is designed for. The adjustable design fits wells measuring 22 to 25 inches deep and 45 to 60 inches wide. The tempered aluminum construction means it will never rust, which is a significant advantage over steel grates.
At 18 pounds, it is heavier than the polycarbonate options but still light enough to move in an emergency. That matters for egress compliance. A grate that is too heavy to lift defeats the safety purpose of an egress window.
Best for Ventilation and Natural Light
If your basement tends to feel damp or stuffy, a grate allows airflow that solid polycarbonate covers block. The open design also means you never have to worry about the cover turning yellow or cloudy over time. Sunlight passes through at 90% capacity.
The adjustability is genuinely useful. The grate adapts to different well contours, which is something fixed polycarbonate covers cannot do.
Only Works on Metal Wells with Radius Corners
This is important: the Model L6 is specifically designed for metal window wells with large radius front corners. It will NOT work on wood, concrete, or block rectangular wells. If you have those well types, you need a different product entirely.
The grate also does not provide weather protection. Rain and snow pass through the openings. If you need waterproofing, pair it with a polycarbonate cover underneath or choose a solid cover option instead.
7. Threlaco UV Resistant Cover – Best Budget Option
Threlaco 39'' x 16'' UV Basement Window Well Cover UV Resistant Polycarbonate for Snow and Rain Heavy Duty Egress Window Cover Winter Summer for Courtyard Balcony Exterior, Clear
39 x 16 inches
Anti-UV polycarbonate
Clear finish
5 screws included
4.64 lbs
Lightweight design
Pros
- Transparent allows natural light filter
- Budget friendly price point
- Durable anti-UV polycarbonate
- Easy maintenance and reusability
- Installation screws included
Cons
- Some complaints about missing clips
- No directions included
- May not pass inspection without proper securing
The Threlaco cover is the most affordable option on our list, and it shows in both positive and negative ways. The anti-UV polycarbonate material is decent quality for the price. The transparent design lets natural light filter through into the basement. At 4.64 pounds, it is the lightest cover we tested.
Five installation screws come included, which is better than nothing but fewer than what other brands provide. The cover measures 39 x 16 inches, fitting standard window wells. The polycarbonate is thin but flexible, which helps with impact resistance even if it sacrifices some rigidity.
I want to be transparent about the trade-offs here. With a 4.1-star rating from 23 reviews, this cover has more mixed feedback than others on our list. Several users reported missing clips and no installation directions. One reviewer noted it may not pass inspection during a home sale without additional securing hardware.
Best for Temporary or Low-Priority Coverage
If you need to cover a window well quickly and cheaply, this does the job. It blocks leaves and large debris. It lets light through. For a basement window that rarely sees heavy weather exposure, it is adequate.
Just do not expect premium durability. The lighter weight means it is more susceptible to wind displacement than heavier options like the Vercraft or Window Well Supply covers.
Plan to Buy Additional Hardware
Since clips may be missing and no directions are included, budget for your own mounting hardware and plan to figure out installation yourself. If you are not comfortable with that, spend a few more dollars on the Vercraft single cover, which includes 5 clip sets and has clearer instructions.
For a rental property or a window well that is not critical, the Threlaco gets the job done at the lowest entry point on this list.
8. Window Well Supply Sloped Elongated – Best for Narrow Deep Wells
Clear Polycarbonate Window Well Cover Sloped Elongated (43" W x 13" L) – Heavy Duty Basement Window Well Covers Outside Protection from Debris, UV-Resistant with Rust-Free Aluminum Bracing
43 W x 13 L inches
Sloped elongated shape
Polycarbonate
Rust-free aluminum bracing
500 lb capacity
UV resistant
Hardware and guide included
Pros
- Sturdy polycarbonate with included hardware
- Crystal clear all-weather protection
- UV-resistant coating for clarity
- Corrosion-resistant aluminum support
- Heavy-duty 500 lb support capacity
Cons
- Premium price point
- Not Prime eligible
This is the elongated sibling of the Window Well Supply semi-circle cover we reviewed earlier. The 43-inch width by 13-inch depth dimensions make it ideal for window wells that are wider than average but shallower front to back. Same commercial-grade construction, same 500-pound capacity, same aluminum bracing.
I appreciate that Window Well Supply includes an installation guide and hardware kit with every cover. That is not universal in this category. The corrosion-resistant aluminum support runs the length of the cover, providing structural integrity that prevents sagging under snow loads.
The UV-resistant protective coating is the same formulation used on the semi-circle model. It prevents the clouding and yellowing that ruins cheaper polycarbonate covers. Crystal-clear visibility is maintained year after year according to the 84% of reviewers who gave this 5 stars.
If your window well dimensions match the elongated shape, this is arguably the best-built cover on our entire list. The combination of commercial-grade polycarbonate and aluminum bracing at 500-pound capacity is hard to beat.
Best for Wide and Shallow Window Wells
The elongated shape specifically addresses wells that are wider than they are deep. If your well measures around 43 inches wide but only 13 inches of front-to-back projection, this cover fits like a glove. The sloped design ensures water and snow run off rather than accumulate.
Multiple sizes are available across the Window Well Supply product line, so you can find the right match even if these exact dimensions do not fit.
Same Shipping Limitations as the Semi-Circle
Like the semi-circle model, this cover ships within 2-3 days and is not Prime eligible. The premium price reflects the commercial construction quality and included hardware. For homeowners planning a long-term window well solution, the wait and investment are worthwhile.
The zero negative review patterns on this product are remarkable. Every reviewer who purchased it found something positive to say about the construction quality, fit, or ease of installation.
9. SANDALIM 2-Pack Polycarbonate Covers – Best Multi-Pack Value
SANDALIM 2-Pack Window Well Cover Outside 40" X 17", Clear Polycarbonate Basement/Egress Window Well Cover, All-Weather Against Debris, UV Resistant, Tear-Resistant, Waterproof, Windproof (Only Cover)
2 covers per pack
40 x 17 inches each
Clear polycarbonate
UV resistant coating
Weatherproof
9 size options
11.77 lbs total
Pros
- Durable polycarbonate resists impact
- UV-resistant coating prevents yellowing
- Weatherproof for extreme conditions
- Modern sleek transparent design
- Versatile with 9 size options
Cons
- Frequently out of stock
- Limited review count due to being newer
This is the 2-pack version of SANDALIM’s polycarbonate cover line. Each cover measures 40 x 17 inches, giving you slightly more coverage than the single SANDALIM unit. The pack weighs 11.77 pounds total, meaning each cover is around 5.9 pounds, which strikes a good balance between heft and manageability.
The polycarbonate construction matches the quality of the single SANDALIM cover we reviewed above. UV-resistant coating, weatherproof design, and the same modern sleek aesthetic. The main advantage here is getting two covers in one purchase at a better per-unit cost.
I should note that this product is relatively new to the market, which explains the lower review count of 11. However, 88% of those reviews are 5 stars. The feedback consistently praises the durability and clean appearance. One reviewer specifically mentioned the covers surviving a full winter without cracking or yellowing.
Best for Homes with Multiple Basement Windows
If you have two or more basement window wells to cover, the 2-pack is the smartest way to buy. You get matching covers with consistent quality and appearance. The per-cover cost is significantly lower than buying two individual units separately.
The 9 size options mean you can find the right fit for each well even if they are different dimensions. Mix and match sizes within the product line.
Stock Availability Can Be a Challenge
The biggest issue with this 2-pack is availability. SANDALIM products frequently show out-of-stock status on Amazon. If you see it in stock, order immediately rather than waiting. The alternative is to purchase two individual covers from another brand on our list.
The newer product status also means fewer long-term durability reviews. Based on the construction quality and materials, I expect these to perform comparably to the single SANDALIM cover, which has solid long-term feedback.
10. QIPRAONO Heavy-Duty with Splash Guard – Best for Flood Prevention
QIPRAONO Basement Window Well Covers Outside, Heavy-Duty Egress Window Well Cover Clear, All-Weather Against Debris, UV Resistant, Tear-Resistant, Waterproof, Windproof (Only Cover)40" X 17"
40 x 17 inches
Heavy-duty polycarbonate
2-inch rear splash guard
15 size options
UV resistant coating
Hardware included
6.44 lbs
Pros
- Built-in 2-inch rear splash guard
- 15 size options for precise fit
- UV-resistant coating stays clear
- All hardware included for installation
- Heavy-duty polycarbonate construction
Cons
- Only 10 units often in stock
- Premium size options cost more
The standout feature on this QIPRAONO cover is the integrated 2-inch rear splash guard. No other cover on our list has this. It directs water away from the house foundation, which directly addresses one of the biggest concerns homeowners have about window wells: basement flooding.
I tested this through a particularly wet spring, and the splash guard worked as advertised. Water hit the back of the cover and was directed outward rather than seeping down behind the well wall. For homes with drainage issues, this design feature is genuinely valuable.
With 15 size options, QIPRAONO offers the most size variety of any brand on our list. Whether your well is compact or oversized, chances are good you will find a matching cover. The 40 x 17 inch version I tested fits standard wells, but the range extends well beyond that.
The 60 reviews and 4.4-star rating show this is a popular choice. Reviewers consistently praise the splash guard feature and the quality of the polycarbonate. The UV-resistant coating prevents yellowing, and the included hardware makes installation straightforward.
Best for Homes with Water Drainage Issues
If you have experienced water in your basement through window wells, the splash guard design makes this the top choice. The 2-inch guard acts as a barrier that redirects runoff away from the vulnerable gap between the cover and the foundation wall.
Combined with the heavy-duty polycarbonate that blocks rain and snow, this cover provides the most comprehensive water protection of any product on our list.
Stock Fluctuations on Popular Sizes
The most popular sizes often show low stock warnings. Amazon typically restocks within a week or two, but if you see your size available, do not hesitate. The 15-size range means QIPRAONO likely has your dimensions, but availability per size varies.
For the price, features, and size variety, this is the best overall value on our list. The splash guard alone justifies choosing it over similarly priced competitors.
Buying Guide: How to Choose the Best Window Well Covers
Choosing the right window well cover comes down to five key factors: material, size and fit, weight capacity, egress compliance, and wind resistance. Let me walk you through each one based on what I learned during three months of testing and what homeowners on forums consistently report.
Material: Polycarbonate vs Steel Grate vs Aluminum
Polycarbonate covers dominate our list for good reason. They are clear, lightweight, UV-resistant, and block weather entirely. A Reddit user summed it up well: polycarbonate is the way to go to allow more light in while keeping everything else out. Quality polycarbonate covers last 5 to 10 years depending on climate.
Steel grate and aluminum grate covers serve a different purpose. They prioritize airflow, natural light, and fall prevention over weather protection. Rain and snow pass right through them. If you need both weather protection and airflow, consider a steel grate with a polycarbonate topper, which is what Wasatch Covers offers in their custom line.
Aluminum grates have one significant advantage over steel: they never rust. The Adjust-A-Grate on our list is made from tempered aluminum and will outlast steel alternatives in corrosive or coastal environments.
Sizing and Fit: Measure Twice, Order Once
The most common complaint on DIY forums is that covers do not fit properly. One-size-fits-all simply does not work for window wells. Measure the width across the widest point of your well opening, then measure the projection depth from the house wall to the front edge of the well.
Most covers on our list specify their dimensions clearly. Brands like QIPRAONO with 15 sizes and SANDALIM with 9 sizes give you the best chance of finding an exact match. A cover that is too small leaves gaps. A cover that is too large overhangs and looks sloppy.
Weight Capacity and Load Bearing
The industry standard for quality window well covers is 400 pounds of weight capacity. The Window Well Supply covers on our list exceed that at 500 pounds. This matters if you live in an area with heavy snow loads or if someone might accidentally step on the cover.
Aluminum grates like the Adjust-A-Grate support 400 pounds while remaining light enough for emergency egress. The trade-off with grates is that they do not support snow accumulation the way solid covers do, since snow falls through the openings.
Egress Compliance and Safety
If your window well serves an egress window, the cover must be removable from the inside in case of fire. A homeowner on a forum raised this exact point: make sure the cover is not secured in a way someone could not easily push off in case of fire.
All the polycarbonate covers on our list can be designed for egress compliance when properly installed. Quick-release mechanisms and lightweight materials are key. The Window Well Supply covers and Vercraft covers both work well for egress windows when mounted correctly.
Wind Resistance: Why Covers Blow Away
This is the number one pain point I found across every forum and review source. Cheap plastic covers fly off in wind. One Reddit user reported that the cover on their new home build kept flying off during windy winter storms. The solution comes down to two factors: weight and anchoring.
Heavier covers naturally resist wind better. The Vercraft covers at 10+ pounds stay put where 4-pound covers do not. Proper anchoring with stainless steel screws or robust mounting clips is equally important. Several Amazon reviewers upgraded from included clips to self-tapping screws for a more secure hold in high-wind areas.
Installation Difficulty by Type
Polycarbonate covers are the easiest to install for DIYers. Most require only a drill, a few screws, and 15 minutes per well. Covers that include hardware and instructions, like the CC LOT and QIPRAONO options, make the process even smoother.
Aluminum grates are moderately more difficult because they need to fit precisely inside the well contour. The Adjust-A-Grate’s adjustable design helps, but expect to spend 30 to 45 minutes getting the fit right.
For DIYers on a budget, a forum user shared that they built custom covers from clear acrylic and PVC for about $75 per cover. That is a viable option if you have the tools and skills, but the pre-made options on our list save significant time and likely deliver better results.
Price Range Guidance
Window well covers range from about $15 for flimsy plastic domes to over $700 for fully custom installations. The sweet spot for quality residential covers is between $55 and $165 per cover. Every product on our list falls within or near this range.
Budget options under $65 like the Threlaco provide basic coverage but require additional hardware and have shorter lifespans. Mid-range covers between $65 and $100 from Vercraft, SANDALIM, and QIPRAONO offer the best balance of quality and value. Premium covers above $150 from Window Well Supply deliver commercial-grade durability with aluminum bracing and 500-pound capacity.
FAQs
Are window well covers a good idea?
Yes, window well covers are a smart investment for any home with basement windows. They prevent water damage, block debris and leaves, keep animals out, improve safety by preventing falls, and can reduce basement maintenance significantly. Quality polycarbonate covers also allow natural light to pass through while protecting your foundation.
What are the common problems with window well covers?
The most common problems are covers blowing off in high winds, poor fit on non-standard wells, cheap materials cracking or yellowing over time, water leaking from the sides, and improper installation without adequate anchoring. Choosing a heavy cover with proper mounting hardware solves most of these issues.
How much should window well cover cost?
Quality window well covers typically cost between $55 and $165 per cover. Budget options start around $60, mid-range polycarbonate covers run $65 to $100, and premium commercial-grade covers with aluminum bracing cost $150 or more. Avoid covers under $30 as they tend to crack, yellow, or blow away quickly.
How to cover up window wells?
Measure your window well width and depth, choose a cover material (polycarbonate for weather protection or aluminum grate for airflow), select the right size, position the cover over the well opening, and secure it with mounting clips or screws. For egress windows, ensure the cover can be easily removed from inside in case of emergency.
What is the best material for window well covers?
Polycarbonate is the best material for most homeowners. It is clear, lightweight, UV-resistant, impact-resistant, and blocks weather completely. Aluminum grates are better if you need maximum airflow and natural light but do not need weather protection. For heavy snow areas, look for polycarbonate covers with aluminum bracing rated for 500 pounds or more.
Conclusion
After testing 10 covers across multiple homes and weather conditions, the best window well covers in 2026 come down to what you need most. For overall quality and value, the Vercraft 2-piece set delivers heavy-duty polycarbonate construction at a fair price. For flood prevention, the QIPRAONO with its built-in splash guard is unmatched. And for maximum durability in snow country, the Window Well Supply covers with aluminum bracing and 500-pound capacity are worth every penny.
Measure your wells, match the size, and invest in a cover that will actually stay put and last for years. Your basement windows deserve better than flimsy plastic that blows away with the first storm.