In the commercial roofing industry, the most commonly requested question is whether to replace or coat a commercial roof. Replacing your commercial roof is no easy task. In addition to the cost, the procedure might be annoying and uncomfortable. It has even been known to stop operations in the middle of manufacturing. Rebuilding a roof might not always be required, though. Taking the help of a commercial roofing company Mississauga, could be the ideal option in many circumstances.

What are the Advantages of Roof Coating?

A material for roof coating is put to a roof’s surface to shield it from bad weather and environmental deterioration. There are several types of roof coatings, each with its own advantages, ranging from high-solid silicone emulsions to acrylic-based polymer emulsions. These adaptable coatings not only prolong the life of the roof but also serve as reflecting paving, which lowers energy expenses, and helps with waterproofing. Furthermore, roof coatings by a roofing contractor might aid in preventing debris from amassing on the surface. Additionally, they can provide an extra shield of protection against harsh weather conditions like wind and heavy rain.

When to Coat vs. Replace Your Commercial Roof: Which is Better?

If specific requirements are met, our specialists advise covering a roof rather than replacing it. When it comes to roof coatings, the most frequent error made by any roofing contractor is to disregard these recommendations in their decision-making process.

  • Is the Surface Sufficiently Smooth for Coating?

A smooth or semi-smooth surface is necessary for the correct application of coatings. The building is not a good choice for a coating if it has a ballasted roof, which is composed of river rocks, or a tar and gravel roof. Since the coating did not completely seal around all of the surface undulations of the roof, there will probably be holes from where it did not work as intended.

  • Is It Dry Enough to Apply a Coat?

There is usually some kind of porous commercial roofing material between the roof deck and the roof surface on business roofs. They are frequently found as perlite, fiberboards, fanfolds, or polyisocyanurate boards. These materials get wet from moisture saturation caused by roof leaks. Over time, moisture would probably seep back through the roof surface if a coating were to be put over a saturated roof. This would result in penetrations in the coating, rendering it useless for preventing water intrusion into the structure.

  • Will the coating system continue to be attached to the current roof?

Even if a commercial roof occasionally satisfies the first two requirements, it shouldn’t be used. This is due to circumstances on some roofs where the current roof will eventually fail, making a silicone coating applied on top equally liable to fail. This may happen if a roof has already been coated with a less successful substance that failed to adhere to the roof. This simply indicates that the roof’s coating will flake off. It’s also true that some roofs are installed so badly that you can’t rely on them to stay on the building. A sound roof must be covered with roof coatings in order to work at the exact levels.

What are the Benefits of Roof Replacement?

When a roof is completely replaced, all old components are taken out and replaced with brand-new ones that are specifically matched to the climate and structure. The best materials typically have the longest warranties. They have a 20-year lifespan if properly cared for. Getting an impermeable barrier between you, your property, and the weather is the main advantage of replacing your commercial roof. Additionally, adding more layers provides additional insulation against heat or cold, thus reducing energy expenses.

In addition, a new roof adds aesthetic appeal that enhances the building’s individuality and ultimately raises its worth. All things considered, replacing a roof is a great investment for houses and commercial buildings.


Regarding your roof, you want to ensure that you make the best decision for your budget and objectives. A roof coating can significantly improve your home or building’s energy efficiency while extending your roof’s life.

When it comes to replacing a flat roof, property owners have two primary options. They can cover the existing roof material or replace the entire roof. It can be difficult to choose the appropriate course of action in certain situations. Nevertheless, one can choose the option that will be best for the property by having a basic understanding of the benefits and drawbacks of each with the help of experts at PWCR, a leading roofing company in Mississauga. Contact us today for more details!