Premium Exteriors.
Honest Pricing.
Windows, siding & doors installed by a Quincy family — Heartland, CertainTeed, Therma-Tru. Free estimates across Illinois, Missouri, and Iowa.
Trusted Brands We Install
Heartland
Target Doors
CertainTeed
Therma-Tru
Masonite
Tando
Affinity StoneFive services. One crew. Quincy-based.
Every job is handled by our in-house team — no subcontracted surprises, no middlemen stacking markup.
Windows
Heartland and Target windows with Cardinal Glass — the same glass used in Andersen windows. Double-hung, casement, bay, sliding, and specialty styles available with a lifetime warranty.
Vinyl Siding
CertainTeed premium siding in dozens of colors and profiles. We also carry budget-friendly options so every homeowner gets a great result at their price point.
Entry & Patio Doors
Target, Therma-Tru, and Masonite entry doors in fiberglass, steel, and wood-grain finishes. Storm doors, patio sliders, and French doors with custom sizing available.
Stone Veneer
Affinity Stone and Tando composite stone veneer adds instant character and value. A fraction of the weight and cost of real stone with a look that lasts.
Soffit & Fascia
Available in both aluminum and vinyl. Aluminum is more durable and fire-resistant; vinyl is lighter and more affordable. We help you choose the right fit for your home and budget.
Repairs
Storm damage, rotted trim, broken windows, failed siding — we fix it right. Single-area repairs to full restoration. No job too small.
Our Recent Work
Every project is a complete transformation — premium materials, expert installation, homes that look brand new.
Stained Oak Entry With Sidelights
Quincy, IL
After Fresh White Vinyl Sunset
Quincy, IL
After White Vinyl Side
Quincy, IL
Before Outbuilding Front Damaged
Quincy, IL
Before Weathered Outbuilding Side
Quincy, IL
Board Batten Soffit Detail
Quincy, IL
Charcoal Lap With Gable
Quincy, IL
During Norandex Housewrap Install
Quincy, IL
Farmhouse Wraparound Porch Dormers
Quincy, IL
Gray Ranch Complete Exterior Front
Quincy, IL
Gray Ranch Rear View
Quincy, IL
Gray Ranch Side View
Quincy, IL
Navy Blue During Install Scaffold
Quincy, IL
Navy Blue Family Ranch Hero
Quincy, IL
New Construction White Lap
Quincy, IL
Scaffold Ladders During Install
Quincy, IL
Tan Garage Single Bay
Quincy, IL
Tan Garage Two Bay Front
Quincy, IL
Tan Garage Two Bay Side
Quincy, IL
Tan Ranch Complete Exterior
Quincy, IL
Stacked Ledgestone To Board Batten Detail
Quincy, IL
Board Batten Opening Cut Install
Quincy, IL
Crew Installing Egress Window
Quincy, IL
Egress Galvanized Window Well Basement
Quincy, IL
Picture Window Gable Completed
Quincy, IL
Team Installing Triple Picture Window
Quincy, IL
Get Your Budget Estimate
Answer a few quick questions and see a budget range — no obligation, no pressure. Final pricing confirmed after measurement.
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What Homeowners Say
Real results from real Quincy-area homeowners
“We got quotes from three companies. 3D was the only one that didn't try to upsell us on things we didn't need. Fair price, great quality, done in two days.”
Sarah M.
Quincy, IL
“Jason and his crew were professional from start to finish. Our vinyl siding looks incredible — neighbors keep asking who did it. Highly recommend.”
Mike & Jan T.
Quincy, IL
“Replaced our front entry door and 8 windows. The Heartland windows are amazing — our heating bill dropped noticeably the first month. Can't beat the lifetime warranty.”
David R.
Camp Point, IL
We Didn't Plan on Starting a Business.
It Just Happened.
Jason and Mindy Deters were flipping houses and managing rental properties when they hit the same wall every homeowner does — nobody wanted to install a window without stacking markup on markup.
Then they discovered Heartland Windows — top-tier windows using Cardinal Glass (the same glass used in Andersen windows), with a lifetime warranty. Jason and Mindy saw an opportunity. Greg and Laura Deters — Jason's uncle and aunt — saw the talent and dedication, and decided to invest. Partnering with Austin Dannehold of Dannehold Construction, they launched 3D Windows & Siding.
What started as a family solving their own problem has grown into Quincy's fastest-growing exterior contractor. No showroom overhead. No subcontracted surprises. Just the manufacturers we trust, installed by the people whose name is on the truck.
Jason & Mindy Deters, Austin Dannehold, Greg & Laura Deters
The family behind 3D Windows & Siding
Book Your Free Consultation
Pick a time that works for you. We'll come to your home, take measurements, and give you an exact quote — no obligation.
Get In Touch
Quincy, IL 62301
Service Area
Proudly serving Quincy, Camp Point, Payson, Liberty, Hannibal (MO), Palmyra (MO), Keokuk (IA), and surrounding communities within 50 miles.