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Things You Need to Know About Casement Windows

Casement windows are known for their straightforward design. Unfortunately, they often escape the attention of homeowners who favor more popular styles like sliding and double-hung windows. However, casement windows are a unique type of window that’s worth considering given their numerous features and advantages.

About Casement Windows

These windows open and close like an entry door, with the sash attached to side-mounted hinges. In most models, the sash opens and closes as you rotate the crank found on the window interior. A tensioning device holds the sash in place when it is fully open. When closed, the latch found on the window interior pulls the sash tightly against the weatherstripping.

Perfect for Ventilating the Home

Casement windows are the only windows available in the market that can be fully opened. Double-hung windows, in contrast, only open halfway: either the top or bottom half.  Sliding windows only open on either side. With the sash acting as a flap that funnels breezes into your home, casement windows are a great choice of replacement windows if you want to promote ventilation.

Better Outdoor Views

The simple, straightforward design of casement windows is evident in how they use as little frame and sash as possible. This means more room for the glass, resulting in a clear, unobstructed view of your outdoors. With this in place, you also allow more sunlight to flood your interior, making your room look and feel more airy and spacious.

At Renewal by Andersen® of Des Moines, our most airtight, energy-efficient casement windows feature an easy-to-reach single lever that securely locks the windows at multiple points for a tight seal. Like our other window offerings, they are composed of the highly efficient High-Performance™ Low-E4® glass and the advanced Fibrex® frame material – two window components that can help boost your home’s energy efficiency.

Turn to us for your window replacement needs. Call us at (515) 274-9700, or fill out our contact form to schedule a free in-home consultation. We serve residents of Des Moines and the surrounding areas.


"I received information and estimates from both Pella and Andersen. There was no contest between the two. Dave Steffes and everyone I had contact with were very professional and helpful. The quality and cost exceeded what Pella had to offer. I am very pleased with my choice."

Barb W. - Ames, IA
July 2014

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