Sunroom Model 300 -
3 Season Sunroom with glass
Sunroom Model 300 – Single Pane Glass
Sunspace 3-Season glass Sunrooms: Bright, Durable, and Stylish
Brighten up your home and add inviting charm with a Sunspace 3-Season Sunroom. Built with durable 2-inch extruded insulated aluminum pillars and single-pane glass from Sunspace, this sunroom offers lasting strength with little upkeep. Enjoy flexible airflow through aluminum-framed double-roller windows that slide open from either side, giving you greater comfort and ease.
Discover the Ideal Roof for Your Sunroom Project
Explore a variety of roof systems tailored to match your style, whether you’re drawn to the elegance of a cathedral ceiling or the clean lines of a studio pitch roof. Each option works seamlessly for transforming a current deck, porch, or carport, offering a customized solution for your space.


Discover the Benefits of a 3-season Glass sunroom Installation
Explore the many advantages of adding a three season glass sunroom to your home and turn your living space into a flexible, cozy retreat you can enjoy throughout the year.
Customizable to Your Needs
Our three-season glass sunrooms offer a high level of customization to suit your unique needs and style. You can tailor everything from the glass and roof thickness to the finishes and optional features, allowing you to design a space that complements your lifestyle and personal taste.
Connection to nature
Featuring large glass panels, a three-season sunroom offers clear, uninterrupted views of your garden, backyard, or the natural scenery around you. This strong connection to the outdoors not only elevates the beauty of your home but also promotes a greater sense of well-being.
Natural light
One of the key advantages of a 3 season glass sunroom is the generous amount of natural light it introduces into your home. With its glass walls, sunlight pours into the room, creating a bright, welcoming environment.
Extended living space
A three-season glass sunroom offers a versatile addition to your home, creating extra space that can be used in many ways. Whether you're looking for a peaceful reading corner, a sunny play area for the kids, or a stylish spot to host guests, this sunroom delivers the perfect setting.
Build the sunroom you’ve always wanted!
We Offer Financing!
Get a Room as Low as $259/mo*
At Sunspace by Sunrise Sunrooms, we believe everyone deserves to enjoy the beauty and comfort of a custom-made sunroom without breaking the bank. That’s why we offer flexible financing options to fit your budget.


Step into Comfort with Our 3-Season Glass Sunrooms
With years of experience transforming homes across Southern Maine, we specialize in creating 3 season glass sunrooms that blend effortlessly with your current living space. These sunrooms provide a smooth connection between your home and the outdoors, offering a stylish and functional retreat. Picture yourself enjoying your morning coffee bathed in natural light, or entertaining guests in a space that feels open yet sheltered. Our 3 season glass sunrooms combine beauty and utility, enhancing everyday living with comfort and charm.

GET IN TOUCH WITH SUNRISE TO BEGIN YOUR OUTDOOR LIVING PROJECT.
Benefits
- Choose Your Panel Thickness: Offered in 3", 4", or 6" options to match your specific requirements.
- Engineered for Your Environment: Crafted with your region's roof dimensions, snow loads, and insulation needs (R-Value) in focus.
- Sturdy Core Design: Built with dense foam for superior strength and thermal performance.
- Long-Lasting Exterior: Protected with aluminum on both sides for lasting durability.
- Easy Upkeep: Outfitted with heavy-duty extruded aluminum gutters and fascia for a clean, low-maintenance look.
Download Brochures

Looking for design inspirations? Check our videos.
Check out these two videos to see the versatility of our three season glass sunrooms and learn how they can elevate your living space. Watching them will give you a clear idea of the many advantages a glass sunroom offers and help you imagine how it could transform your home environment.
Create your favorite room to enjoy the outdoors today!
OUR GALLERY
Explore our gallery to discover inspiring examples of 3 season glass sunrooms that highlight the beauty and flexibility we bring to each project.
WHY CHOOSE SUNSPACE BY SUNRISE SUNROOMS ?
Explore why Sunspace by Sunrise Sunrooms stands out as the top choice for Southern Maine homeowners looking for superior quality, custom design, and unmatched service.
- Experience and expertise
Since 1978, Sunspace by Sunrise Sunrooms has earned a strong reputation for quality throughout Southern Maine. Our team of professionals carefully builds every solarium with expert craftsmanship.
- Quality materials and craftsmanship
Our top priority is quality. We use high-end materials built to withstand Maine’s tough weather, so you can enjoy your space in every season. You can count on lasting comfort and durability.
- Commitment to customer satisfaction
Our main goal is to ensure our clients are completely satisfied. From the initial consultation through to the final installation, we deliver a seamless and enjoyable experience. Our approachable and well-informed team is always ready to answer your questions and make sure your project aligns with your vision.
Q&A
Browse our Q&A section to discover answers to all your questions about three season glass sunrooms.
What is the installation process like?
Our team manages every step from the first consultation through to the final installation, delivering a seamless and stress-free experience.
How do I maintain a 3-season sunroom?
Maintenance is simple and includes routine glass cleaning, inspecting the gutters, and making sure the seals and insulation stay in good condition.
What type of insulation is used in the sunroom walls?
Our sunroom walls are built with high density foam core insulation, offering strong thermal resistance and helping keep the indoor temperature consistently comfortable.
Are there options for different glass tints?
We provide a range of glass tint choices to help manage sunlight exposure while also boosting the visual appeal of your sunroom.
Can the roof thickness be customized?
You can choose from 3 inch, 4 inch, or 6 inch roof thickness options to suit your insulation requirements and personal preferences.
What materials are used in the construction of your 3-season sunrooms?
Our sunrooms are built with high-density foam core walls, laminated with aluminum panels on both faces, and include durable extruded aluminum gutters and fascia.
How does a 3-season sunroom differ from a 4-season sunroom?
A three season sunroom is intended for use during the more moderate months of the year and typically isn’t ideal for very cold winter conditions unless extra heating is added. In contrast, a four season sunroom is fully insulated and built to be comfortable throughout the entire year, even during colder weather.
OUR OTHER PRODUCTS

SCREEN ROOM - MODEL 100
Transform your outdoor space with a screen room that creates a refreshing, insect-free retreat perfect for relaxation. Enjoy the fresh air and natural surroundings in comfort while staying protected from bugs.

3-SEASON (VINYL) SUNROOM - MODEL 200
Enjoy more time outdoors with a three-season vinyl sunroom, built to keep you comfortable from spring through fall. The sturdy vinyl panels offer flexible airflow options while shielding you from the weather.

4-SEASON (INSULATED) SUNROOM - MODEL 400
Create a cozy year-round getaway with a four-season insulated sunroom. Designed for optimal energy efficiency, it retains warmth during the winter and stays cool in the summer, allowing you to enjoy natural light and outdoor views no matter the season.