Of Mildew, Mold & Moss: A Guide To Invasive Roof Flora

As we mentioned on a separate blog post this month, it’s been an incredibly wet and stormy summer here in Toronto, Ontario. This has caused roofs to be threatened not only by falling trees and water, but also by a subtler agent: invasive flora that can grow on your roof, devaluing your property by decreasing the overall aesthetic presentation as well as actually undermining the structural stability of your roof.

If you have to have a flat roof with metal flashing and state of the art weatherproof membranes, this may be less of a problem. For one thing, mildew and mold are repelled by copper and zinc on galvanized sheet metal. When it rains, trace amounts of of copper and zinc are rinsed down the roof, defeating the advance of mildew.

As we also stated in a separate post this month, if you have a flat roof it is incredibly advantageous to apply a reflective, weatherproof layer of roof coating to it. In preparation for the application, you must wash the roof in any case, and once the coating is applied, it is much more difficult for mold to grow, since moisture that accrues cannot penetrate the coating. Of all the roofing companies in Toronto and the GTA, we have the most experience with this, so if you’re thinking of applying reflective coating, contact us.

If you live in Toronto, there’s a pretty good chance that you live in an older house with a pitched roof and asphalt shingles. These types of roofs are much more susceptible to the growth of mold and mildew – it’s simply the downside of living in a gorgeous, historical house. While some types of algae and moss are relatively harmless (some might even say they add a quaint je ne sais quoi to a house), it’s always best to clean them off if you have the opportunity. Asphalt shingles typically have a life span of about 20-30 years in the harsh Canadian climate, and when you need help repairing your roof shingles, or even replacing your roof altogether, mold growth is going to make the job slightly more complicated.

Aside from this strictly “decorative” type of algae, there is certainly flora that can do serious damage to the integrity of your roof as well, opening it up to leaks and other such disasters. Some types of algae will grow in your gutters and downspouts, since they like a damp environment. Algae proliferates through airborne spores, so if there’s moisture on your roof and the wind is blowing, there’s not much you can do to stop it. Metal flashing is a great preventative method, but failing that you may need to remove it yourself, or contact us to come apply a liquid cleaner to kill the mold.

It is extremely important to act quickly, because once the mold eats through the shingles, you’re dealing with more and more problems. First of all, you’ll need to replace the compromised shingles. Secondly, the spores can now spread to the inside of your home, creating unsightly patches in the attic and compromising the air quality and your health. If you have young children, the last thing you want is gross moldy air drifting through the house, since it can be a drain on the immune system. If you have serious mold issues, contact us today to speak to the most experienced roofers in Toronto.

How To Waterproof Your Roof And Save On Utilities

Here at the tail end of summer, you’ve probably seen your utility bill skyrocket due to increased use of air conditioning and fans. If you happen to manage a building with an HVAC system, this has probably been on your mind even more so. Something that people rarely think about is the fact that the physical makeup of their roofs has a direct effect on the internal temperature of the actual building. Since we offer roof repair services in Toronto, we like to consider every little aspect of how your roof affects your quality of life, and as such very few things related to roofs escape our attention. 

You may have noticed that most roofs on big buildings in downtown Toronto are flat (slightly sloped actually) and black. While this has become industry standard, it is actually incredibly inefficient. The truth is that a black roof absorbs so much heat from the sun that it can become eighty degrees hotter than the ambient temperature (in Fahrenheit). Gravel is more efficient: it still gets hot, but not extremely so. A white, reflective coating is the absolute best, reflecting the sun’s heat and minimizing the the load that is placed on the overworked air-conditioning unit. Especially if your A/C box is on the roof, it is inefficient to have a black roof, since it will make it much more difficult for the requisite heat exchange to occur.

Here at Professional Roofers, we offer flat roof services for any kind of building, and we don’t mind telling you that installing reflective, water-proof coating on your roof can save you all kinds of headaches and money. Roof coating is a terrific way to extend the life of your roof, and most roof coating products can be purchased with a five-year or a ten-year warranty. Just because the status quo is flat black roofs, doesn’t mean you have to conform.

The US Environmental Protection Agency (EPA) has concluded that high albedo roofing can reduce the temperature inside of a building by up to five degrees Fahrenheit and save you up to fifteen percent on your utility bill. This is pretty amazing. What’s more, this particular type of coating is primarily used to waterproof flat roofs against pooling water that will often collect and create erosion and leaking. The reflective qualities are an added bonus!

This type of coating can be applied to roofs of almost any kind: PVC, metal, foam, concrete, modified bitumen. If you are considering applying roofing coating, you will first have to undertake any serious repairs that need to be tended to, and then power wash the roof so that you are not sealing in grime and muck. If you need roof repair services in Toronto and the GTA, we can certainly offer our friendly, reliable expertise. Since we specialize in flat roofs, we are also extremely well acquainted with the application of this coating, which is much less involved and costly than replacing your entire roof.

Lucas 8000 silicone coating is the best known version for this process, it basically adds a reliable shield to your roof to give it a greater lifespan and protect it against the elements. Furthermore, it is extremely breathable, so that the ventilation process can still occur, preventing mold from developing.