Picking the right commercial roofing method is a big decision for business owners who want a roof that lasts, performs well, and stays within budget. The two main installation methods—cold process and hot process roofing—each have their own benefits, depending on factors like climate, maintenance, and cost.
For businesses with commercial roofs in Squamish, choosing the right method is especially important because of the area’s heavy rainfall and changing temperatures. In this guide, we’ll break down the five key differences between cold and hot process commercial roofing to help you make the best choice for your building.
What Is Cold Process Commercial Roofing?
Cold process is a system that uses adhesives, coatings, and self-adhering membranes to install roofing materials without the need for heat. This method has gained popularity among commercial roofing companies because it is safer and more environmentally friendly than traditional hot process roofing.
Key Features of Cold Process Commercial Roofing:
- Uses liquid adhesives or self-adhering sheets.
- No need for torches or hot asphalt.
- Ideal for buildings like schools and hospitals that require low-disruption installation.
- Reduces installation hazards and energy consumption.
According to the National Roofing Contractors Association (NRCA), cold-applied commercial roofing systems can enhance durability and extend a roof’s lifespan due to their seamless waterproof protection. For more insights on roofing system best practices, you can refer to the NRCA Roofing Manual: Membrane Roof Systems.
What Is Hot Process Commercial Roofing?
Hot process roofing, also called built-up roofing (BUR), has been a go-to choice for decades. It works by heating asphalt or bitumen and layering it onto the roof, creating a thick, protective barrier. This method is widely used by commercial roofing companies because it holds up well against tough weather and heavy foot traffic.
Why Choose Hot Process Commercial Roofing?
- Uses heated asphalt or bitumen to form a strong, weatherproof seal.
- Needs skilled professionals and special equipment for proper installation.
- Creates a thick, waterproof layer that adds extra durability.
- A top choice for industrial buildings and commercial roofs in Squamish, where long-lasting protection is a must.
The Canadian Roofing Contractors Association (CRCA) reports that hot process roofing is still one of the best options for extreme weather conditions. Its multi-layer design makes it a solid choice for commercial roof repairs and new construction projects that demand extra durability. This method involves applying multiple layers of bitumen and reinforcing fabrics, creating a robust and weather-resistant membrane. The CRCA’s technical bulletin on Hot Asphalt and Built-up Roofing discusses the importance of proper application temperatures to ensure optimal performance, especially in cold weather conditions.
Key Differences Between Cold and Hot Process Commercial Roofing
If you’re looking into commercial roofing, you’ll likely come across two main installation methods: cold process and hot process. Both have their benefits, but knowing their differences can help you choose the best option for your building.
1. Installation Process
- Cold Process: This method relies on liquid adhesives and self-adhering sheets, so there’s no need for heat during installation. It’s a quicker, safer process that works well in many conditions.
- Hot Process: This method requires heating asphalt or bitumen, which makes installation more labor-intensive and time-consuming. It’s a tried-and-true technique but needs skilled workers to do it safely.
2. Durability & Lifespan
- Cold Process: It creates a strong bond but isn’t as thick as hot process roofing, so it may not last as long in high-traffic areas.
- Hot Process: With multiple layers of protection, this type of roofing is built to last, making it a great choice for commercial roofing projects that need extra durability.
3. Safety Considerations
- Cold Process: Since no heat or open flames are used, there’s no fire risk, making it a safer option for installation.
- Hot Process: This method involves torches or hot asphalt, which means there’s a higher fire risk and a need for trained professionals to handle the job properly.
4. Weather Resistance
- Cold Process: Works well in moderate climates, but in extremely cold weather, it can take longer to fully cure.
- Hot Process: This roofing system handles temperature changes and heavy rain much better, which makes it a reliable option for commercial roofs in Squamish, where the weather can be unpredictable.
5. Cost Considerations
- Cold Process: It’s generally more affordable upfront since it requires less labor and installs faster.
- Hot Process: While it costs more initially, it lasts longer and reduces the need for frequent commercial roof repairs, which can save money in the long run.
According to a study by Oak Ridge National Laboratory, selecting the right commercial roofing system can reduce cooling energy use by up to 40% in summer and 15% in winter (Oak Ridge National Laboratory).
Pros and Cons of Cold Process Commercial Roofing
Cold process commercial roofing is a go-to option for many businesses because it’s simple to install and doesn’t require heat. But like any roofing system, it comes with both benefits and drawbacks.
The Good:
- Safer to Install – Since there’s no need for open flames or heating, the risk of fire and accidents is much lower.
- Saves Time and Money – The application process is quicker, which helps cut down labor costs—a big plus for commercial roofing companies.
- Better for the Environment – This method releases fewer harmful chemicals (low VOC emissions), making it a more eco-friendly choice.
The Not-So-Good:
- Takes Longer to Cure in Cold Weather – In lower temperatures, the adhesive needs more time to fully set, which can slow things down.
- Adhesives Can Wear Out Over Time – If not properly maintained, the bonding materials can break down, leading to leaks and commercial roof repairs.
For businesses looking into commercial roofs in Squamish, understanding these pros and cons can help in making the right choice. A professional roofer can guide you toward the best solution based on your building’s needs.
Pros and Cons of Hot Process Commercial Roofing
Hot process commercial roofing is one of the toughest options out there, which is why many businesses choose it. But like anything, it has both good and bad sides.
Pros:
- Built to last – This roofing system is incredibly durable, making it a great investment for commercial roofs in Squamish.
- Handles tough weather – Whether it’s heavy rain, strong winds, or intense sun, this roof can take it.
- Fewer leaks, fewer repairs – The multi-layer design creates a solid barrier against moisture, which means fewer commercial roof repairs down the road.
Cons:
- Not a DIY job – Installing this type of roof requires skilled professionals, so you’ll need experts from commercial roofing companies to do it right.
- Costs more upfront – The materials and labor aren’t cheap, but since it lasts so long, you may save money in the long run.
Which Commercial Roofing Method Is Best for Commercial Roofs in Squamish?
For business owners in Squamish, selecting the right commercial roofing method depends on climate, budget, and building structure.
- Cold Process is best if: You need a fast, cost-effective solution with minimal safety risks.
- Hot Process is best if: You require a long-lasting, weather-resistant option that withstands extreme conditions.
Squamish’s heavy rainfall makes waterproofing a top priority for commercial roofs in Squamish. While hot process offers long-term durability, cold process is an excellent choice for businesses looking for a quick and energy-efficient solution.
Squamish receives an average of 2,200 mm of rainfall annually, making weather-resistant commercial roofing essential.
When to Schedule Commercial Roof Repairs
No matter what type of commercial roofing you have—whether it’s a cold or hot process system—regular maintenance and repairs are key to making it last. Over time, weather, material quality, and even installation issues can cause a roof to wear out faster than expected. Keeping up with commercial roof repairs helps prevent bigger, more expensive problems down the line.
Signs Your Commercial Roof Might Need Repairs:
- Leaks or standing water – Water pooling on the roof can lead to serious damage if not addressed quickly.
- Cracks or blistering – If you see cracks, bubbles, or blisters in the roofing material, it could be a sign of trapped moisture or aging materials.
- Higher energy bills – A sudden rise in heating or cooling costs might mean your roof’s insulation isn’t working as it should.
- Loose or damaged materials – Shingles, membranes, or other roofing materials that are cracked, loose, or missing need attention before they lead to bigger issues.
Certain things can speed up roof damage, leading to unexpected repairs or even full replacements. If you want to know what causes commercial roofing to wear out faster—and how to avoid it—check out this guide on the top factors that shorten a roof’s lifespan.
If your building has been through heavy rain, snow, or strong winds, it’s a good idea to have it inspected by a commercial roofing company. Catching small problems early can help you avoid costly repairs or replacements.
Conclusion
Both cold process and hot process commercial roofing methods come with their own set of benefits. Cold process roofing is a safer and quicker option that’s also better for the environment, while hot process roofing stands out for its durability and ability to withstand harsh weather conditions. If you’re a business owner looking into commercial roofs in Squamish, working with experienced commercial roofing companies can help you choose the best option for your building. And if your roof is showing signs of wear, scheduling commercial roof repairs on time can save you from bigger, more expensive problems down the road.