Northwest Iowa winters can feel long, and the sunny days in between are worth soaking up. A custom sunroom from Screenbuilders gives your Spencer home a bright, comfortable room where you can enjoy the daylight, the view of your yard, and the changing seasons without bundling up or battling the bugs.
Most families don’t need a bigger house so much as a better room. A sunroom addition gives you flexible space that can change as your needs do, and it fills with natural light in a way most interior rooms never will.
We build sunrooms throughout Spencer, from established homes near downtown and the Little Sioux River to newer houses on the outskirts of town. We also serve nearby northwest Iowa communities such as Everly, Royal, Fostoria, Dickens, and Hartley.
Screenbuilders started in Cherokee, Iowa, in 1993, and we’ve been designing and building patio rooms and sunrooms ever since. Spencer is a short drive from our Cherokee home base, so we’re glad to be a local option for homeowners who want to buy from an Iowa company.
Built with high-quality materials for durability and long-term performance
Every sunroom is tailored to match your home’s architecture and your personal style
We ensure your new sunroom feels like a natural extension of your home
From consultation to completion, we handle everything






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Ryan MarisTrustindex verifies that the original source of the review is Google.
Needed help with customer service and the team went above and beyond. Would recommend to anyone! Thank you guys!Posted on Google![]()
Carrie STrustindex verifies that the original source of the review is Google.
Ordered parts for our lanai 4 stack windows after hurricane Milton in Sarasota. Received them within 5 days, Shipped the same day. Excellent customer service and product was exactly what was advertised. 🤩Posted on Google![]()
carolyn marshallTrustindex verifies that the original source of the review is Google.
Very professional when they arrive on sight . Willing to listen to what your end goal is and willing to answer any questions you may have. We look forward to the installation of the 3 season porch soon.Posted on Google![]()
Eric LibkeTrustindex verifies that the original source of the review is Google.
Fast service, great team. Great design.Posted on Google![]()
RLS SchmittTrustindex verifies that the original source of the review is Google.
Simply the best and most thorough company around. Careful and detailed. Had them put on a sunroom, replace windows and modify a deck. Pleased each time!
There’s never been a better time to enhance your home with a custom Sunroom in Sioux City, IA. Let Screenbuilders help you create a space you’ll love for years to come.
All-Season Sunrooms
If you want a sunroom you can enjoy on a snowy January afternoon, an all-season room is the way to go. Our all-season rooms use standard 3-inch thermally broken wall panels and vinyl-framed windows with high-performance glass options, making heating and cooling more energy efficient. The result feels like a true room addition, not an afterthought.
Solid Core Room Additions
For homeowners who want an energy-efficient alternative with more flexibility in finishing the interior and exterior walls, ask about a Solid Core room addition. These walls use expanded polystyrene insulation laminated between OSB panels for a strong, well-insulated structure.
Three-Season Sunrooms
Prefer fresh air most of the year? A three-season room with EZE-Breeze vertical four-track sliding panels lets you open things up on warm days and close them when the wind or rain shows up. It’s a great fit for spring, summer, and fall.
If you’re also weighing screen rooms or porch conversions, see our patio enclosures in Spencer for more ways to use your outdoor space.
A sunroom should look like part of the original house. Before we design anything, we’ll look at:
Your home’s style and rooflines so the addition blends in
Which way the room will face and how much sun it will get throughout the day
How you plan to use the space so we can recommend the right windows, walls, and layout
Your existing patio, deck, or foundation to see what can be built on or around
Because Screenbuilders manufactures key components in-house, we have more control over fit and finish. Our experienced crews then handle the installation with care from start to finish.
Yes, if you choose an all-season sunroom. These rooms are built with insulated wall panels and energy-efficient windows designed for year-round comfort. Three-season sunrooms are best for spring, summer, and fall.
Almost anything. Spencer homeowners use sunrooms as family rooms, dining areas, home offices, reading nooks, hobby spaces, and bright spots for houseplants.
Every Screenbuilders sunroom is custom designed. We consider your home’s style, rooflines, and layout so the new room feels like a natural part of the house.
Many homeowners love sunrooms for plants because of the natural light. We can talk through window placement and room orientation during your estimate if growing plants is one of your goals.
A Solid Core room addition uses walls made of expanded polystyrene insulation laminated between OSB panels. It’s an energy-efficient option that gives you flexibility in how the interior and exterior walls are finished.
In some cases, yes. We’ll evaluate your current patio, deck, or foundation during the site visit and let you know what options make sense.
Call (712) 225-2737 or fill out our online estimate form. Tell us about your home and how you’d like to use your sunroom, and our team will follow up to plan next steps.
A sunroom gives you year-round living space filled with light, comfort, and a view of the outdoors – no matter what Iowa weather brings. Sunrooms provide a versatile space for various activities like working or relaxing, and they can serve as informal conservatories or garden rooms. Take the first step today.
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