Fall is around the corner, winter is near, and that means Old Man Winter will be delivering cold weather. Save your home's energy with energy efficient windows and insulated siding. Call, sign up on our website, or stop into one of our showrooms.

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Iowa's Most Trusted Exterior Remodeling Company
At Midwest Construction, "Quality Products, Quality Installation" is our motto because that is what we set out to provide for each of our customers.

Tom M.


Josh and his crew did a very good, professional job while working on the old crooked house. It turned out much better than I thought it would. Hard working bunch.

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Iowa Windows, Siding & Sun Rooms

Mason City

Mason City, IA

Phone - (515) 305-2241
Hours - Mon-Thurs: 8am-4:30pm, Fri:8am-1pm

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Grimes, IA

Phone - (515) 305-2241
Hours - Mon-Fri: 8am-4:30pm, Sat: By Appointment Only

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Referral Rewards Program

We will reward you with a $25 gift card for every home we visit that has a need for products we offer!

Up to $65 Off Per Opening

Trade in your old windows and receive up to $65 per window opening! Use our Instant Cash Offer* not valid with other offers or prior sales. *Up to 100 Unite Inches & You must present offer upon initial visit.

EcoSmart Patio Door Give Away

Midwest Construction and our Window Partner Great Lakes Window, want to give you a chance to win an EcoSmart Patio Door, Free!

Expires 09/30/2023

$650 Off New Sun Room

Save $650 on a new sun room purchase. *Studio or Gabled sun rooms available. *Not valid with other offers or prior sales. You must present coupon upon the initial visit.

Why Choose Midwest Construction

Max & Amy Say It!

Max & Amy Say It!

Max & Amy, WHO 1040 AM Des Moines, Iowa Talk Radio. They say: "It's one of the finest family run businesses we've ever seen."

Family owned and operated

We Say It!

Midwest Construction, family owned and operated, has been providing quality products and professional installation since 1958.

Satisfied Customers

Satisfied Customers Say It!

Real testimonials from real customers. Here is why theses customers are so happy with Midwest Construction. Read customer testimonials here.

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About Midwest Construction

Quality products, quality installation is not only Midwest Construction's motto, but it is what we strive to provide to all of our beloved customers. We have researched and found the best products for your exterior remodeling project, becoming exclusive dealers on most to pass along great savings to you, and remain on top of the best installation practices the industry has to offer. What does this mean to you? Peace of mind that after we finish your job, you will enjoy your project for many years to come.

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Midwest Construction

Project Portfolio

Serving customers throughout Iowa. Check out our past projects.

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Past Projects Map

Popular Products & Services

Midwest Construction offers the best replacement windows, siding and sunrooms available โ€“ and our customers always โ€“ always โ€“ talk about our clean, courteous installation crews.


NAHB BBB NARI Energy Star Lead-Safe Certfied Firm - EPA VSI Certified Vinyl Siding Installer Preferred Partner Full Back - Insulated Siding Trusted Local Reviews | Midwest Construction & Supply, Inc. Remodeling Big50 USA Today HBA Diamond Dealer