Calhoun’s custom-engineered fabric structures provide a bright and open storage space while protecting your equipment or hay storage from harsh weather conditions. We build to your standards, and customize to your needs, guaranteeing low utility costs and fabric structures that will last generations.


Calhoun Super Structure fabric buildings are the ideal building solution for equipment and hay storage, protecting your assets from the harmful effects of weather exposure. Our custom-engineered fabric buildings are engineered to withstand seismic impact and fluctuating weather conditions. Unlike conventional buildings, our fabric buildings are much more airtight reducing heat loss while keeping moisture out.

The breathable membranes of Calhoun’s fabric cover allows natural daylight into the building, reducing or eliminating daytime lighting costs.

Other Applications for Agriculture Storage Solutions: Manure/Waste Storage, Crop Storage.

Corrosion Resistant

Calhoun’s fabric structures protect your equipment from the damaging effects of snow, rain and UV rays causing rust, by hot dip galvanizing our steel. Applied to both interior and exterior surfaces, our galvanization meets established industry standards to improve the longevity of your equipment and reduce maintenance costs.

Superior Ventilation

The shape of Calhoun’s fabric buildings combined with breathable fabric membranes allow for more air volume in our structures. This provides a ventilation system that eliminates moisture created through weather conditions, critical to the longevity of your hay storage or equipment.

Clear Span Interior

Calhoun’s fabric structures provide clear span interiors, critical to your farming equipment needs. The height and free span interior of our fabric buildings have no interior columns, allowing for easy access to your hay storage and convenient handling of your farming equipment.

A Birthday Surprise

Industry: Equine Location: Vermont Dealer: Lussier Barn Builder Calhoun Building: CC 62 x 144 The Challenge: The customer wanted to surprise his wife with a brand new indoor riding arena for her birthday, and only had 10-days to have it planned, designed, engineered, and installed while she was away on a trip with a friend. The Solution: Calhoun, together…
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Adapted and Relocated

Industry: Salt Storage Location: Irondequoit, NY Dealer: Hybrid Building Solutions Calhoun Building: VP 80 x 240, HT Series 72 x 100, CC 62 x 40 The Challenge: The customer had to re-locate a building adjacent to a communications tower. Engineering the structure was a challenge for both the customer, Calhoun and Hybrid as clearance had to be maintained so not touch…
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B.C. Gold Mining Project

Industry: Mining Location: British Columbia Dealer: Absolutely Covered Calhoun Building: HT Series 50 x 80 The Challenge: The customer was in need of a structure in an incredibly remote area in northern B.C, Canada. The structure was needed for storage of electrical wires but the challenge was reaching, and installing, a structure in an area with a very high…
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Westerner Exhibition Cover-All Replacement

Industry: Equestrian Location: Red Deer, AB Dealer: Coverco Buildings Ltd. Calhoun Building: VP Series 100 x 160, and VP Series 100 x 140 The Challenge: Westerner Exhibition Park need to remove two collapsed Cover-All buildings, and the new buildings needed to be customized to utilize the existing foundation. Different bay spacing meant that the existing…
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Salt Dome Replacement

Industry: Salt Storage Location: South Frontenac, ON Dealer: Barrett's Farm & Family Centre Calhoun Building: VP Series 100 x 102 The Challenge: The original salt dome for the Township of South Frontenac needed replacement due to age. In addition, the storage needs had increased over the years with township amalgamations. Areas for both mixing and storing…
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See What Our Customers Are Saying
We’re very satisfied with our Calhoun building. The HSS post option was one of the main considerations that helped us make our decision. From the initial site visit to the building and completion of the structure, we were impressed with the National Building Group, their crew, and overall professionalism.

Martien Kusters

DutchDeltaFarms Ltd., Sarnia, ON

"(Calhoun), Greg Lussier, and their team performed a miracle by putting up this amazing indoor riding arena structure in the 10-day time period I was gone. I can not tell you how thrilled I am with this arena . . . instead of dreading another winter, I am now planning all the fun my horse buddies and I will have!"

Sandy Bender


"The building looks great both structurally and aesthetically. The crew did a great job putting the building up fast while maintaining high quality workmanship."

Joe Wisinski

County Highway Superintendent; Madison County, New York

"I am pleased by the friendliness and hard work of the crew, and ability to keep on schedule with the construction. Something that is quite rare nowadays. I would recommend Calhoun to anyone wishing to put up a large area under cover, quickly and efficiently, at a minimum cost."

J&B's Split Rock Farm

Weathersfield, Vermont

"We are very impressed with the quality of our Calhoun product, and the method employed to make the construction a pleasant and rewarding experience. Our structure was delivered in the time frame quoted, construction commenced on the promised schedule, and was completed with the utmost of efficiency and professionalism. Staff is highly competent, polite, and demonstrated concern for everything being exact."

Debra Anderson

Gaited Stables; Brandon, Vermont

“[I am] 200% happy with the customer service the Calhoun dealer, Hybrid Building Solutions, provided before, during and after the building was constructed. We looked at other solutions, but with the quick turnaround and recommendations from other government connections, in addition to the extra service and inspections, it was a win-win situation.”

Highway Superintendent

Town of Hermon; Hermon, New York

“We have a sound building with sufficient storage and the speed we need to keep up with the needs of our farmer-customers. Kudos to Greystone (and Calhoun) for making that happen.”

Lane Mielke

Area Operations Manager; Pinnacle Agriculture, South Dakota

"We have two Calhoun Super Structures on our farm and plan to build a third this year. The natural light and fresh air flow provide a superior environment for the animals. We used to raise our young stock in the old milking barn. Over the course of a winter, we would usually have a handful of illness cases. Now we raise them in our 40 x 90 Calhoun structure and this past winter, not one case of illness. These buildings are top notch."

Nick Meyer

North Hardwick Dairy; Hardwick, Vermont

"I can only recommend Calhoun to anybody who wants an indoor arena or any other type of Calhoun superstructure for that matter. The lighting is perfect, the high ceiling gives us lots of space, we don't feel crushed, and the opening rolling fabric spaces on the long sides of the arena make us feel outside during the summer months - it is perfect! The quality, the service, and the craftsmanship are just top of the line. Thank you so much Calhoun for making such a high-quality product!"

Michele Poitras


"I have seen neighbours’ structures with wind damage and our (Calhoun) arena has withstood some pretty strong wind gusts."


On the Forest Boarding; Stouffville, Ontario

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