Description
One of the Largest Spa Enclosures: Room for Hot Tub, Furniture, and More
The Aspen 12×18 is one of Westview’s larger composite spa enclosures, offering enough interior space for an 8-foot square hot tub along with entry steps, a sofa, a coffee table, and still room to move comfortably around the space. For homeowners who want their enclosed gazebo to function as an all-season outdoor living room rather than just a hot tub cover, the Aspen 12×18 delivers that vision in the distinctive warm terracotta and dark brown West Coast design that sets the Aspen line apart.
The 12×18 also works as a shelter for a compact swim spa, (up to approximately 14 feet in length). Homeowners who find the 12×16 too tight for their swim spa but do not need the full 20-foot length of the 12×20 will find the Aspen 12×18 to be the ideal size. The extra length provides clearance around the spa for safe entry and exit, maintenance access, and a small seating area at one end.
Ultrawood with the Aspen’s Signature Warmth
Built from Ultrawood composite, the Aspen 12×18 delivers the grain texture and warmth of natural wood without a single maintenance requirement. No staining, no sealing, no sanding, no replacing rotted boards. The terracotta color is engineered into the material, not applied as a coating, which means it retains its character for the entire lifespan of the structure. For a gazebo this size, the maintenance savings compared to a cedar or redwood building are substantial — hundreds of dollars and dozens of hours over the years.
The Aspen’s signature rounded corners and dark brown accent trim give the 12×18 a warm, architectural appearance that customers describe as looking like a professionally built room addition rather than a prefab kit. One owner mentioned that she calls it her she-shed because of the look — high praise for what starts as a flat-pack delivery.
Duraflex Roof Engineered for Northern Winters
The Duraflex PC roof is rated at up to 35 lbs. per square foot of snow load, capacity. or 40 lbs. with the bracket upgrade. At this larger roof span, the engineering behind the Duraflex system becomes especially important — more surface area means more accumulated snow and rain. The hardtop polycarbonate roof handles it consistently. A centered skylight provides natural light and a view of the sky, while six aluminum-framed sliding lockable windows provide full control over ventilation, temperature, and privacy.
One Aspen 12×18 owner reported that assembly took approximately 11 hours, noting that a taller step ladder would have made the roof installation easier on their raised platform. That is real-world feedback that future buyers can plan around: bring a tall ladder and budget a full day for the build.
Doors, Layout, and Versatile Use
Two lockable aluminum swing French doors can be positioned on any side. The Aspen 12×18 is commonly purchased for hot tub and swim spa use, but the generous interior also works as a backyard lounge, garden office, fitness room, or outdoor entertaining space. When locked, the doors and windows create a fully secure, weather-sealed enclosure that protects your investment and your privacy.
Assembly, Shipping, and Upgrades
The Aspen 12×18 ships as a pre-assembled panel kit in a steel-framed crate to the nearest freight terminal. Residential curbside delivery is also available in most areas. Westview offers up to one year of complimentary storage for customers whose site is not yet ready. Optional screen kits, tempered glass windows, and roof bracket supports can be bundled at a package discount. Affirm financing is available at checkout. Call 1-800- 895-1972 for sizing help or delivery details.
Best customer service. I really appreciate all the efforts that Brent, from customer service department did to solve my issue. I was pleasantly surprised. Great work!
Excellent quality. Instructions could be clearer but went together well. Took about 10 manhours to assemble (in 90 degree July heat). Definitely a two man job. Roof panels need 1 person inside and another outside. Next step is to install a fan and some lights. Just passed test against 50mph winds here in Delaware
We bought the backyard gazebo and are so glad it did. Was completely done building it in a single day. We added outdoor drapes and it is beautiful. My husband calls it my she-shed because of the look. Thank you Westview!
My husband and I purchased our Aspen gazebo mainly because of the cool terracotta color, it blends in well with our house and the neighbors’ homes. We also like the look of the rounded corners, it makes it seem like there is more space inside the gazebo. Once our hot tub is installed I’m sure we will be spending many nights after work lounging in our hot tub, surrounded by our new enclosure, hidden away from the elements outside.
My Aspen gazebo arrived in this huge plywood and steel crate and when I saw it I said whoa, what am I supposed to do with that. But you know, the step by step procedure to unload the crate was easy to do and only took about a half hour to unload all of the pieces. Assembling the gazebo on my deck was also easy to do, it took my partner and I just under 9 hrs. total to assemble. Every piece was simple to attach, no issues at all. I’ve invited a few neighbors over to enjoy our new Aspen gazebo, so you may get a phone call from them in the near future inquiring about getting their own gazebo.
My partner and I just love our new Aspen gazebo. It’s so cool to sit in our hot tub inside our enclosed gazebo when the snow is flying all around us. Cold outside, but warm in here. Thank you Westview for your great product.
Just finished installing my Aspen gazebo. I must compliment Westview on a great enclosure. It fit like a glove, all sections secured easily; only difficulty we had was erecting the roof but we got it done. Now my wife, I and our daughter can enjoy many days in our outdoor enclosure without worrying about the elements outside!
I’ve wanted an enclosure for my hot tub few a few years now so when I finally purchased my gazebo from Westview I was thrilled with their expertise and service. When my gazebo arrived I couldn’t wait to set it up so I gathered together a couple of friends and had a gazebo installation party. I didn’t take us too long to set up, the instructions were great. Now we are enjoying a pot luck party inside my new gazebo.
I usually don’t write reviews but I need to give a shout out to Westview. Thank you for helping me choose my Aspen gazebo, it’s perfect. From the skylight, to the french doors, oh and I almost forgot about the sliding glass windows with screens, it’s all perfect! Now all I have to do is add my personal touches to the interior and I’ll have a gazebo to enjoy for many years.
Thank Goodness we got the gazebo set up before the winter hit. Here is a photo of the Aspen 12×18 that we set up before winter. We can send you an updated photo in the Spring once we close off the deck and beautify the yard. The gazebo took longer than expected to set up. We took 11 hours to set this up. Not sure why we took that long. Maybe we should have used a bigger ladder… the roof was hard to reach because of the raised platform.
I don’t normally go out of my way to write a review about a company, however, this time I am going to make an exception. About two months ago we received my gazebo at the local terminal where we were supposed to pick it up. When we went to the terminal I noticed that the crate was labeled with a product size 10×10 but my husband picked it up anyway. When we got home he removed the contents from the crate and put them in the garage and destroyed the crate. About two weeks later we were going to assemble the gazebo and realized we had the wrong gazebo. I started to freak out not knowing what to do. I immediately called Westview and told them what we had done. I was thinking we were totally screwed because we destroyed the crate. Fortunately for me, we were dealing with a reliable company that is all about customer service. I cannot say enough about the customer service and support of this company Westview Manufacturing. It is easy to be friendly and courteous when things are all good but when something goes sideways like our case when we were so stupid to pick up the gazebo that was not the model we ordered and then we go ahead and destroy the crate! Wow, that is crazy. Anyway, Westview was kind enough to expedite the delivery of a replacement gazebo to us and had the other gazebo removed. Totally awesome service. Here are some photos of our gazebo. Thank for the great service. We love our Aspen 12×18.
The mosquito-proof screens are amazing. We can enjoy our Aspen 12×18 gazebo bite-free.
The Aspen 12×18 is a fantastic investment. It adds functionality for our personal use and adds to our property value if we decide to sell our house in the future.
We added a space heater and the interior stays surprisingly warm. Perfect for fall evenings.
Initially, I was hesitant because of the price, but the quality completely justifies our purchase of the Aspen 12×18 gazebo.
The Aspen 12×18 has thick panels that are very solid. Not cheap or flimsy like stuff we see at the big box stores. Not even close.
We host family gatherings in it all the time now. Best backyard upgrade we’ve ever done. We love our Aspen 12×18.
The Westview staff were very helpful over the phone when I needed some guidance on installation. They are very knowledgeable. I highly recommend them.
If you want a beautiful, durable, and practical outdoor room, the Aspen 12×18 Gazebo is unbeatable.
The quality of the windows and framing really surprised me. Everything feels solid and weather-tight.
We use the gazebo as a home office during warm months. Bright, quiet, and super comfortable.