# Bay & Bow Windows

Canonical: https://www.pennywindowstl.com/windows/bay-and-bow-windows/

![A bay window installed on a St. Louis home](https://www.pennywindowstl.com/wp-content/uploads/penny/photos/bay-bow/bay-bow-1-1920.webp)

Windows & doors

# Bay & bow windows in St. Louis.

A bay or bow window turns a flat wall into the best seat in the house. It pulls in light from three directions, adds a little usable depth, and gives a room real character.

[Get a free estimate](/estimate)[(314) 867-4355](tel:+13148674355)

The Penny Window way

## Light from three directions.

A bay or bow window is part window, part small addition. It projects out from the wall to bring in more light and a wider view, and it gives you a sill deep enough for plants, a seat, or just a little breathing room. These take a careful install to look and seal right, which is exactly the kind of work our own crews do best.

### More light, more view

Glass on three planes pulls daylight into a room and opens up the view far more than a flat window can.

### A little extra room

The projection gives you a deep sill, a window seat, or display space that a standard window never could.

### Built and sealed to last

Bay and bow units have to be supported and flashed correctly. Our crews set them square, sealed, and properly tied into the wall.

> “Tim our installer was here one hour ahead of time. He was very professional and cleaned up afterwards. We love the quality and look of the windows.”

Celestine DunnGoogle review

## Need bay & bow windows?

Free in-home estimates and honest answers, across St. Louis and the surrounding metro. Installed by our own crews.

[Get a free estimate](/estimate)[(314) 867-4355](tel:+13148674355)

Good to know

## Bay & bow windows questions we hear a lot.

What is the difference between a bay and a bow window?

Both project out from a flat wall to bring in more light and a wider view, but a bay is usually three angled units for a bolder, more angular look, while a bow uses more units in a gentle curve. Either one adds a deep sill for a seat, plants, or display. We help you choose the right one for your room and wall during your free in-home estimate.

Does a bay window need special installation?

Yes, and it is exactly the kind of work our own crews do best. A bay or bow window is part window, part small addition: it has to be supported, flashed, and tied into the wall correctly so it looks right and seals right for the long haul. We set the angled units square, flash the whole assembly, and seal it tight.

Will a bay window add usable space to my room?

It adds a little. The projection gives you a deep sill that a standard flat window never could, enough for a window seat, plants, or a display shelf, plus daylight from three planes instead of one. It turns a flat wall into the best seat in the room.

Have a question about estimates, brands, our crews, or where we work? [See all our frequently asked questions.](/faq)

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