3-Season Sunrooms: Stretch Your Wisconsin Summer
Wisconsin summers are too short to spend half of them swatting mosquitoes on an open porch. A 3-season sunroom gives you an enclosed, bright, breezy space from early spring through late fall — and it does it without the cost of a full four-season addition.
M2 Decks & Enclosures installs Betterliving 3-season aluminum sunrooms across southeast and south-central Wisconsin. We’re based in Mukwonago and we serve homeowners from Milwaukee to Madison and everywhere in between. If you want a room that feels like the outdoors without the hassle of actually being outdoors, this is the product.
How a 3-Season Sunroom Is Built
The Betterliving 3-season sunroom uses 3-inch extruded aluminum wall sections. Aluminum is the right material here — it’s lightweight, doesn’t rot, doesn’t warp, and stands up to Wisconsin’s freeze-thaw cycles without flinching. The frame won’t rust, won’t need painting, and won’t give you maintenance headaches down the road.
For glazing, you choose between Low-E argon-filled tempered insulated glass and single-pane tempered glass. If you’re in Waukesha County lake country — Pewaukee, Delafield, Oconomowoc — and you want to use the room from March through November, the insulated glass is worth the upgrade. It keeps the space more comfortable on cool mornings and blocks more UV. Single-pane works fine if you’re primarily using the room in the warmest months.
Frame colors are White, Desert Sand, and Earthstone. Most homes in our service area look best with White or Desert Sand, but Earthstone is a solid choice if your home has warmer exterior tones.
What 3-Season Actually Means
Let’s be direct: a 3-season sunroom is not designed to be heated or air-conditioned. You can put a space heater in there on a chilly October evening, and it’ll take the edge off. But these rooms aren’t insulated like a 4-season space. The aluminum framing, while durable, conducts temperature. When it’s 10 degrees outside, the room is going to be cold.
What you get is roughly seven to eight months of comfortable use. For a lot of Wisconsin homeowners, that’s exactly the right trade-off — you’re getting an enclosed porch with real glass, real protection from weather and insects, and a 50-year transferable warranty, all at a lower price point than a 4-season sunroom.
The Ceiling Makes the Room
Betterliving’s Ceiling Plank System gives you eight finish options: Rustic Pine, Natural Cherry, Bamboo, Weathered, Beadboard, White Wash, Classic White, and Painted White. This is one of those details that separates a Betterliving sunroom from a basic porch enclosure. The ceiling planks install cleanly and give the room a finished, intentional look.
We’ve installed a lot of Rustic Pine and Natural Cherry ceilings in homes around Hartland, Muskego, and New Berlin. The wood-tone planks warm up the aluminum framing and make the space feel less like a sunporch and more like a real room.
Common Uses We See
Homeowners across our 14-county service area use 3-season sunrooms for all kinds of things:
- Morning coffee spot with a view of the yard
- Entertaining space for summer and fall gatherings
- Screened-in play area for kids (no sunscreen negotiations required)
- Reading room or art studio with natural light
- Hot tub enclosure (yes, we’ve done several of these)
The versatility is the point. You’re adding a room that adapts to however you want to use it.
Upgrades and Add-Ons
Pair your 3-season sunroom with 4-track stacking windows for up to 75% ventilation on warm days. Add retractable screens for a convertible indoor-outdoor feel. Or install a retractable awning on the exterior to manage afternoon sun exposure — especially useful on west-facing rooms.
Frequently Asked Questions
3-Season Sunroom Gallery
Ready to Get Started?
Contact M2 Decks & Enclosures to request a free quote. We’ll schedule an on-site visit, take measurements, and walk you through every option — no obligation, no pressure.