Serving the Bismarck–Mandan area
Egress Window Replacement in Bismarck, ND
Older egress windows fail seals, leak air, or were never sized to current code in the first place. Replacement into an existing opening is the most affordable egress job there is — we connect you with a local pro who swaps in an energy-efficient unit rated for North Dakota winters.
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Assess the unit
Frame, seal, and well condition checked.
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Remove
The old window comes out clean.
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Set the new unit
Installed and squared in the existing opening.
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Seal & verify
Weatherproofed and checked for smooth operation.
Signs it's time to replace
Condensation between the panes means the seal is gone and the insulating gas with it. Frost on the inside face in January, a sash that's swollen or rotted shut, water staining below the sill after thaws, or a crank mechanism that no longer opens the window fully — that last one is a code problem, not just an annoyance, because an egress window that won't open fully isn't an egress window.
Check the opening while the window's out
If the existing window predates current code, replacement is the moment to measure the opening against today's numbers: 5.7 square feet net clear opening, 24 by 20 inch minimums, sill within 44 inches of the floor. Sometimes the existing rough opening passes and it's a straight swap; sometimes the opening needs enlarging, which turns the job into a cutting project. Better to know before the new unit is ordered.
Ready for a quote on your basement?
Get a free quoteEnergy efficiency for ND winters
The spec that makes sense here: double-pane insulated glass with a low-E coating and argon fill, in a vinyl or fiberglass frame that doesn't conduct cold the way old aluminum does. A basement window sits in the coldest, dampest wall of the house — the energy delta between a failed 1990s unit and a modern one is noticeable in the room, not just on paper.
What replacement costs
A swap into an existing compliant opening generally runs far less than a new cut — national industry data commonly puts it in the $1,500–$3,000 range versus $2,700–$5,900 for a full new install. The cost breakdown covers what moves the number.