Best Sloped Window Well Covers for Basement Protection
The best sloped window well cover is one that matches your well’s measured width and projection while shielding the opening from leaves, rain, snow, and small animals. These five clear polycarbonate options have sloped designs and aluminum support. The Vercraft 39-by-18-inch cover suits a deeper, narrower well, while WINDOW WELL SUPPLY offers several dimensions for buyers comparing fit. Measure your well before choosing; similar-looking sizes are not interchangeable.
| Product | Listed Size | Best For |
|---|---|---|
| Vercraft Sloped Cover | 39 × 18 inches | A deeper well |
| WINDOW WELL SUPPLY Semi-Circle | 39 × 16 inches | A compact projection |
| WINDOW WELL SUPPLY Semi-Circle | 42 × 17 inches | A wider opening |
| Vercraft Sloped Cover | 39 × 17 inches | A 39-inch-wide well |
| WINDOW WELL SUPPLY Semi-Circle | 41 × 17 inches | A width between 39 and 42 inches |
Vercraft 39 × 18-Inch Sloped Cover
This Vercraft cover measures 39 inches long by 18 inches wide and is made from 0.18-inch-thick clear polycarbonate. Its sloped shape and rust-resistant aluminum support are intended to help keep debris and weather out of a basement window well.
Best for: Buyers whose well needs a 39-by-18-inch cover, particularly when the extra inch of projection matters compared with a 39-by-17-inch option. The listed features include UV and impact resistance, resistance to yellowing, and included installation hardware.
Limitation: Its 18-inch width may be too deep for a shallower well. Confirm both measurements and the shape of the well before ordering.
WINDOW WELL SUPPLY 39 × 16-Inch Cover
This clear polycarbonate cover has a sloped semi-circle profile and measures 39 inches wide by 16 inches long. The product listing says it includes mounting hardware and has UV-resistant coating with rust-free aluminum bracing. It is described as made in the USA.
Best for: Buyers with a 39-inch-wide well that needs a shorter, 16-inch projection. Its clear panel can keep the window visible while providing a barrier against leaves and rain.
Limitation: The 16-inch length is shorter than the other listed options. Choose another size if your well requires more coverage.
WINDOW WELL SUPPLY 42 × 17-Inch Cover
This sloped semi-circle cover is 42 inches wide and 17 inches long. Its product features include heavy-duty clear polycarbonate, UV-resistant coating, rust-free aluminum bracing, and included hardware. The listed purpose is to help keep debris and rainwater out of the well.
Best for: Buyers who measure a wider opening and need a 42-by-17-inch size. Compared with the 39-inch-wide products, it offers three additional inches of listed width.
Limitation: Do not select it based on width alone; the 17-inch projection and semi-circle profile must also suit the well.
Vercraft 39 × 17-Inch Sloped Cover
This Vercraft model measures 39 inches long by 17 inches wide and uses clear, 0.18-inch-thick polycarbonate with rust-proof aluminum support. The listing describes UV and impact resistance, resistance to yellowing, and protection from leaves, small animals, rain, and snow. Installation hardware is included.
Best for: Buyers whose measured well calls for a 39-by-17-inch cover and who want a clear panel with aluminum reinforcement. Choose it over the 39-by-18-inch version if the shorter listed width better matches the opening.
Limitation: It is designed for a specific size. The shared product image with another Vercraft size does not establish that the dimensions are interchangeable.
WINDOW WELL SUPPLY 41 × 17-Inch Cover
This clear, sloped semi-circle cover measures 41 inches wide by 17 inches long. It features polycarbonate construction, UV-resistant coating, rust-free aluminum bracing, and included mounting hardware. The listing describes it as made in the USA.
Best for: Buyers who need a 41-inch width—between the listed 39- and 42-inch alternatives—while keeping a 17-inch projection. It is a useful size-specific comparison when the smaller and larger options do not match the well.
Limitation: This is not the widest choice in the selection. Measure the well rather than assuming that a slightly wider cover will fit.
Buying Guide
How do you measure for a sloped window well cover?
Measure the well’s width and its projection from the wall to the outer edge. Compare both numbers with the product’s listed dimensions, and check that the cover profile matches the shape of your well. The listings use dimensions in different orders, so confirm which number refers to width and which refers to length before you buy.
Is clear polycarbonate a good choice?
Clear polycarbonate is a practical option when you want light to pass through and prefer to see the window area. The listed products describe UV resistance, and some specifically state impact resistance or resistance to yellowing. These features do not make covers identical: compare thickness, support material, shape, and exact size.
Why does aluminum bracing matter?
Bracing supports the panel, while rust-resistant or rust-free aluminum is intended to resist corrosion outdoors. Check the listing for the support details and included hardware. A cover’s fit and secure installation remain important; do not assume that a particular cover will suit every wall or window well.
What should you check before installation?
- Confirm the well’s width, projection, and shape.
- Check that the listed hardware is appropriate for your installation surface.
- Follow the product instructions and ensure the cover is secured as directed.
- If the window is an emergency exit, check applicable local requirements and make sure the cover will not prevent necessary access.
Frequently Asked Questions
Do sloped window well covers keep rain out?
The listed covers are intended to help protect wells from rain and other weather. A cover can reduce exposure, but fit and installation affect how well it shields a specific well.
Will a clear cover block daylight?
These products are described as clear polycarbonate, which allows visibility through the panel. The listings do not specify how much light reaches a particular basement window.
Are installation supplies included?
The five products described here list included mounting hardware. Check the individual product details for the precise hardware and instructions supplied.
Can I choose a larger cover for extra protection?
Do not assume a larger cover will fit or provide better protection. Match both dimensions and the cover profile to the window well, and verify the installation requirements.