Canvas Buildings. Built by Canadians.
At Harnois, we specialize in canvas buildings, offering structures and portable shelters that are designed and manufactured in Canada to withstand the province’s toughest climates. Whether you need a livestock shelter, an indoor riding arena, a warehouse, or an aircraft hangar, we deliver durable, flexible solutions you can trust.
Industries
Agriculture & Livestock Shelters
Keep your animals safe year-round with livestock shelters engineered for Canadian winters. Our modular barns, calf shelters, and portable barns are built tough — designed and manufactured in Canada.
Our Canadian-designed horse shelters, riding arenas, and barns combine strength, comfort, and durability. Whether you need a single box stall or a full indoor arena.
Protect your airplane with aircraft hangars designed and manufactured in Canada. Our structures are engineered for high winds, heavy snow loads, and year-round performance — ideal for airports and aviation businesses.
Handle organic waste year-round with fabric buildings engineered for composting operations. Our Canadian-designed shelters provide the ventilation, corrosion resistance, and height clearance you need for compost turning, curing, and equipment access — all while controlling odors and runoff. Built for Canada's regulations and climate.
Canvas buildings are designed for remote camps to equipment storage. Equip your oil and gas operations with fast-deploy structures that are engineered in Canada for extreme cold, wind, and mobility. Use them for drilling support, MRO, safety stations, or storage — rapid setup, year-round reliability.
Get the shelter performance you need in harsh mining environments. Our Canadian-made buildings are trusted in Canada and northern regions for mineral exploration, equipment storage, processing areas, and base camps. Engineered for snow loads, chemical resistance, and quick deployment.
Control dust, odor, and runoff with high-clearance, fabric-covered buildings designed for Canada's waste and recycling sector. Whether it’s a transfer station, sorting facility, or recycling depot, our Canadian-manufactured structures provide efficient indoor-outdoor workflow with minimal foundation work.
Warehouses & Industrial Storage
Need flexible warehouse space? Our Canadian-made fabric structures deliver unmatched durability and fast installation for industrial storage, logistics centers, and warehousing across Canada.
Commercial & Industrial Structures
Built in Canada. Built for performance. Our fabric buildings in Canada include temporary storage and permanent buildings. Perfect for business expansion, seasonal storage, or permanent installations.
No two projects are the same. That's why we offer custom shelters engineered in Canada to meet your exact needs — fire resistance, all-weather performance, modular designs, and more.
Canvas Buildings in Canada
Our canvas buildings provide industries with cost-effective, energy-efficient, and rapidly deployable structures that withstand harsh weather conditions. Whether for industrial, agricultural, or commercial use, our structures offer superior ventilation, natural lighting, and minimal maintenance compared to traditional buildings.
Canvas Buildings by Harnois
Quick Installation
Local Service
Customizable and expandable
In-House Engineers
Multiple foundations options
Long-Lasting Warranty
Our Canvas Building Profiles
At MegaDome, we offer a range of canvas buildings, designed to meet the specific needs of various industries. Each structure is engineered for flexibility, durability, and performance while maximizing available space.
DB Series
Widths: 33' to 100'
Double Truss Arch: 16'' to 30'''
100 Series
Widths: 125' to 160'
Double Truss Arch: 33'' to 55''
AR Series
Widths: 60' to 100'
Double Truss Arch
Steel Structure & Fabric Cover
Canvas Buildings Components
MegaDome steel structures and canvas buildings stand out for their superior engineering, high-quality steel, corrosion protection, and innovative oval tube design. With over 50 years of experience in engineering, designing, and installing steel structures, we deliver robust and durable solutions for various industries.
Our exclusive PowerShield® membrane features the most advanced polymer technology available, providing a waterproof and durable covering to protect your valuable assets from the elements.
Canvas Buildings Options
- Foundations
- PowerShield Membrane
- Ends
- Doors
- Natural Ventilation
- High Performance Ventilation
- Snow Deflectors
- Curved Roof Bracing
- Insulation
- Junction to an existing building
- Expansion
- Signage & Branding
- Heating
- Lighting