Timeless Design Backed by Modern Engineering
When you live along the South Carolina coast, your windows need to balance everyday comfort with long-term durability. Double-hung windows remain one of the most popular choices for coastal homeowners because they’re versatile, easy to use, and well-suited for homes that face heat, humidity, and shifting weather conditions. OKNA takes this classic style and elevates it even further with modern engineering, delivering dependable performance without sacrificing curb appeal. Installed by Contract Exteriors, OKNA double-hung windows are designed to fit seamlessly into coastal homes while standing up to the elements year after year.
Window Consultation
Window Installation
Window Replacement
How the Double-Hung Window Replacement Process Works
Switching to premium double-hung windows should feel simple from start to finish. Our proven process makes upgrading as seamless as possible. Here’s a step-by-step breakdown:
Initial Consultation
We begin with a no-obligation meeting to learn about your home, window goals, and design preferences. Our team will provide guidance based on years of local window replacement expertise.
Custom Measurement & Product Selection
Our OKNA double-hung windows will be measured for a precise fit. You’ll be able to select finishes and features to match your home’s style.
Expert installation
Highly trained professionals will install your windows thoughtfully and efficiently, maintaining daily communication and respecting your property.
Project Walkthrough & Warranty Review
After installation, we’ll review the results together, and our team will explain the warranties.
Why Choose OKNA Double-Hung Windows?
OKNA double-hung windows are a strategic choice for coastal South Carolina homes. Their most important features include:
Energy-efficient glazing that helps reduce heating and cooling costs year-round
Advanced resistance to moisture and wind, keeping your home protected during tropical storms and humid summers
Low maintenance, tilt-in sashes that simplify window cleaning both inside and out
Timeless style and enhancement to curb appeal, designed to complement the look of communities like Myrtle Beach and Charleston
Customization choices for size, color, hardware, and more
We’re also proud to install several other OKNA window styles, including sliders, casements, bays, and bows.
Discover the Contract Exteriors Difference
Selecting a window contractor is about more than just the products. It’s about partnership. Contract Exteriors is locally owned and family operated, with a reputation built on transparency, community focus, and a detailed installation process refined over years of service along the coast. Homeowners receive a leading 7-year workmanship warranty in addition to OKNA's strong manufacturer’s warranty, supporting investments for seasons to come.
Our dedication has been recognized through the GuildQuality Service Excellence Guildmaster Award, the Better Business Bureau Torch Award for Ethics, and lasting community partnerships, including our support for The Children’s Recovery Center. From the first “hello” to the final walkthrough, you can expect respect, clarity, and expert service.
Areas We Serve Along the Coast
Homeowners count on Contract Exteriors for dependable window replacement and installation throughout the South Carolina coastline. Our top service locations include Myrtle Beach, Charleston, Mt. Pleasant, Summerville, and James Island. For a full list of communities we serve, visit our service areas page.
Frequently Asked Questions About Double-Hung Windows
Experience Peace of Mind with Quality & Trusted Local Service
Since 2009, Contract Exteriors has delivered window solutions that South Carolina homeowners trust. The combination of award-winning service, certified OKNA products, and exceptional warranties sets us apart in coastal window replacement.
Ready to experience the difference new double-hung windows can make? Give our team a call today to learn more about our window replacement process.
See Our Work Across Your Neighborhood
With over 1,300 completed projects, chances are we’ve worked on a home near you. Click around the map to explore real results.
Outstanding Reviews
Brooks was my contractor on the project. He was awesome! He was there with me every step of the way! Eugenia was very helpful in the office and assisted me in getting the HOA approval. Jason explained the warranty process and even brought me a cake!
Everyone we came in contact with was very cooperative and easy to work with. It was a pleasant experience from the first online chat. They listened to us and helped solve any issues we were concerned about
Wow, this company goes above and beyond. From the very first reach out to the very last interaction once the job was completed. Everything was done first class. The quality of work, the constant communication and level of service was like nothing I’ve ever experienced with any contractor. I priced out a couple different contractors compared to contractor exteriors and I will tell you I would have paid more just to have this experience with them. I had Jonathan as my project manager and he was exceptional.
Very happy with our new Timbetech front porch deck and steps with AZEK facia and risers. Everyone at CE was responsive and very professional explaining every step in detail! We have several homeowners in our community who have already asked for contact info info. Jonathan is a very good project manager and ensured we were satisfied with the quality, cleanliness, and appearance of our new front porch! Thank you!
In choosing a company to replace our deck, we researched and decided to use Contract Exteriors. We definitely made the right choice. We are very pleased with the results. Special thanks to Brooks, our Project Manager, who kept us updated and informed everyday.
Contract Exteriors did a great job for me. The entire group was very responsive, and my deck project turned out fantastic. My project, as all projects, had some surprises that were handled professionally and promptly. Randy, Brooks, and the office staff were great throughout the process. They proactively kept me informed on the status of the project. I never had to call twice to get a question answered or ask for an accommodation.
We couldn't be happier with contract exteriors and the job they did. Our beach house looks brand new with the new Hardie board and white trim. EVERYONE was friendly, well mannered, professional, and was always ready to answer any questions that we had. Miguel and his crew did an excellent job. Brooks the project manager was wonderful, and also Chad who helped us from the very beginning, also the girls in the office. We would not hesitate to use them again.
This company did an amazing job on my siding project. From start to finish they were very professional, helpful, and on time. Eugenia clearly communicated the whole process to me before they even started the project and Brooks was always available to answer my questions. He even came and ensured the cleanup was perfect and finished up the exterior lighting. Even after the project was finished this company ensured communicated to ensure everything was perfect. Super pleased. Thank you!
Everything about this group was extremely professional. Renovations can be challenging but they carefully made sure that their products and our original structures fit together seamlessly. We are truly looking forward to our new elegant deck that will be essentially maintenance free for many, many years. We will definitely use this company for future projects.
Matt Kuzdrall made our whole experience of purchasing two new roofs for our buildings at the Children's Recovery Center so easy. Matt was professional and had all the answers to any questions we had. He has followed up since our new roofs have been installed to make sure everything is still great. Matt is awesome and I would recommend him to anyone I know looking for a new roof.
Our Teams Are Conveniently Located Near You
