Glass Block Windows in Mokena, IL

Glass block replaces a failing basement window with a solid, mortared panel that seals out air and water — and won't need painting, re-glazing, or a second look for decades.

No sash, no frame, nothing that opens. Just a finished panel that closes the opening and stays closed.

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Interior view of two newly installed wave pattern glass block windows in a finished Mokena basement, providing enhanced privacy and natural light.

High-Efficiency Glass Block Basement Windows in Mokena

Mokena's basement windows tell you roughly when the house went up. The subdivisions that filled in through the 1970s and 80s mostly went in with steel-framed hoppers or wood sash set directly into the foundation. Four decades on, the steel has rusted through at the corners, the wood has swelled and rotted where it meets the block, and the glazing putty is long gone. Newer construction tends to have vinyl or aluminum sliders that have held up better structurally but leak air badly at the frame.

Stops the Heat Loss

A failing basement window bleeds conditioned air year-round and makes your furnace work through every Mokena winter. A mortared panel closes the opening completely — no sash gaps, no failed weatherstripping, nothing to re-caulk in five years.

Closes the Easiest Way In

The standard steel hopper is the weakest point in most houses: a single pane, a thin frame, a latch that gives with a screwdriver. Glass block takes that opening out of play. There's no sash to pry and no frame to lever. The blocks are mortared into one rigid panel with nothing in it that opens, and getting through takes sustained, loud, obvious effort.

Privacy Without Losing Light

The obscure pattern blocks the view in while passing most of the daylight through. From the street your basement reads as a finished, cared-for part of the house rather than a dark opening.

How We Install Glass Block in Mokena Basements

Typical Mokena basement openings run 30x20 to 30x16, but we measure every one on site rather than working from standard sizes — forty-year-old foundations settle, and almost no two openings are square.

Sealed Into the Opening

The glass block panel is mortared and sealed into the basement opening so there's no gap for air or water to work through. We handle the prep each opening needs — whether that means pulling a failed frame or working with a sound one — and confirm the approach when we measure.

Dryer Vent Integration

If your dryer vents through a basement window, you don't have to give that up. We fit a dedicated vent block into the panel, routing the exhaust directly outside through a sealed port. It's built into the panel itself, not cut in afterward, so there's no gap around the duct for air or water to work through.

Vinyl Hopper Vents

A solid panel closes the opening tight — which is what you want for security and heat loss, but not always what you want for air. We build in a custom vinyl hopper vent where you need one: a small, screened, operable section that opens and latches shut. Utility rooms and finished basements usually get one; storage areas and street-facing windows usually don't.

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