Atrium (Dome) Style Covers That Let the Window Fully Open
Custom-made basement window well covers for egress and casement windows. The raised Atrium design provides the clearance a crank-out window needs to swing fully open while helping protect the well from rain, snow, debris and animals.
Designed Around the Window, the Well and the Required Opening
A standard flat or low-profile cover may interfere with a casement window that swings outward into the well. An Atrium (Dome) style cover rises above the opening to create usable space for the window sash.
Each cover is measured and manufactured for the specific home. The dimensions account for the window's swing, the shape and projection of the well, and the access needed to open the cover from inside.
Inside access matters
We plan the cover and its opening method around the window and well, then check that the window and cover open as intended.
What Makes an Atrium Cover Different?
Full Window Clearance
The raised profile is designed to let an outward-opening casement or egress window swing fully open.
Opens From Inside
The cover can be hinged or fitted with an inside-release approach so it can be opened without a separate escape hatch.
Custom Manufactured
Width, projection, height and window swing are measured for a secure fit around the actual well.
Clear Polycarbonate
A durable clear cover allows natural light into the basement while helping reduce direct exposure to weather and debris.
The Atrium Cover Opens From Inside
The Atrium cover itself is designed to open. Depending on the installation, it can be hinged or use a release arrangement accessible from inside the window well.
- The casement window has room to swing outward.
- The cover can be opened from inside the well.
- The design avoids permanent obstructions in the exit path.
- The cover remains protective during normal day-to-day use.
Important Egress Consideration
The cover is designed around clearance, access and the usable window opening. Building-code requirements depend on the complete window, well and installation, as well as the local jurisdiction. Final compliance should be confirmed for the specific property.
From Measurement to Installation
Assess the Opening
We review the window style, well dimensions, projection and available height.
Confirm the Swing
The window is measured in its open position so the dome provides sufficient clearance.
Build the Cover
The cover is custom manufactured for the shape and operating requirements of the well.
Fit and Test
The installed cover and window are tested to confirm that both open as intended.
Egress Window Well Covers Across Toronto and Southern Ontario
Toronto • North York • Scarborough • Etobicoke • Mississauga • Oakville • Burlington • Brampton • Vaughan • Richmond Hill • Markham • Pickering • Ajax • Hamilton • Niagara Region • Kitchener-Waterloo • London • Collingwood
Measuring and installation availability depends on the property location and project. For standard well projects, see our window well cover installation service.
Atrium and Egress Cover FAQs
What is an Atrium (Dome) window well cover?
It is a raised custom cover that creates additional space above the well. This shape is particularly useful when a casement or egress window needs to swing outward.
Does the cover need a separate escape hatch?
No. Our Atrium design allows the cover itself to open. It can be hinged or released from inside, depending on the well and installation.
Will the basement window fully open?
The cover is measured around the open window position so the Atrium height can provide the required swing clearance.
Are Atrium covers made in standard sizes?
These covers are custom measured because window height, swing, well shape and projection vary from one home to another.
Does an Atrium cover meet egress requirements?
The cover is designed to preserve clearance and inside access. Compliance depends on the complete window and well installation and the rules in the local jurisdiction, so each project should be assessed individually.
What information should I send for an estimate?
Send photographs of the window and well, your location, approximate width, projection and height, and a photo showing the window fully open.
Need a Custom Atrium Cover for an Egress Window?
Send photographs and approximate measurements. We will review the window swing, well shape and project details before recommending the next step.