Corrugated and standing seam metal roofs have gained a huge following and respect from London ON homeowners because of their long-term durability and high dependability. However, many fear for the worst especially when it’s their first time to make a decision on metal roof design for cold climates.
Having excellent metal roof design for cold climates guarantees you preserve your roof’s lifespan, resolve any small problems that can evolve over time, and saves you much money from both repairs and replacement. However, why choose metal when prepping for winter?
Angie’s List talks about the contractors it interviewed and their positivity in using metal roof design for cold climates.
Cold-weather home upkeep can be costly, but using high-quality materials upfront may save you time and heartache in the long run. Specifically, some roofing contractors recommend metal roofs for extreme weather conditions.
Despite the higher costs of metal shingles, Chicago roofing contractor Ryan Trela from Trela Roofing & Remodeling advises, “Homeowners should put the best roof on a house that their budget will allow. Metal roofs are a good long-term investment for people in cities like Chicago.”
However, one Indianapolis-based Angie’s List member cautioned in a review that metal roofs also have at least one winter disadvantage. “We found that without snow guards, the snow ‘avalanches’ from the roof when the snow begins to melt,” the member wrote, “creating a hazard around walkways and landscaped areas.” (Source)
Forbes mentions how metal roofs are highly advantageous for residences too.
Choose a Metal Roof Design for Cold Climates
It’s the most durable option, sheds snow with ease and rarely springs a leak. Asphalt shingles also stand up well in harsh winters and are less costly to repair than wood or slate shingles.
Provide a place where your roof can shed snow safely.
Metal roofs can shed snow so quickly, it can cause another problem — giant snow piles surrounding the house! Be sure to include ample space beneath the roofline for this purpose, and provide a safe walking path not directly below the eaves. (Continued Reading)
So, is it time to call on your trusted London ON metal roofer with in-depth metal roofing experience and get your new roof installed? Certainly! However, if you’re planning for a custom metal roof design for cold climates — especially a beautiful yet complex roof design — then you’ll need to consider some design specifications to improve its lifespan and durability in the cold.
Lindus Construction has a great set of things to take note of before having a metal roof installation. Check it out below.
Important Details in Metal Roof Design for Cold Climates
Color not only has an aesthetic value but also plays an important factor in solar absorption of a metal roof, which helps the snow and ice thaw and melt. Choosing a darker color rather than a lighter one will help with this dramatically.dark metal roof in cold climate
Consider your surroundings and take into account any large trees that will provide shade for the metal roof. Such foliage causes extra snow accumulation and in some cases, ice damming.
Snow Bars or Guards
Snow bars or guards are devices that will allow the snow and ice on your metal roof to fall off in small amounts or even melt completely before falling to the ground. Their main purpose is to prevent the sudden release of snow and ice from your roof known as a roof avalanche. This is a very serious issue and could cause damage to anything below your roof in its path such as your LeafGuard seamless gutters, plumbing vents, cars, pets or even a person if they were standing in the right spot when it happens. The areas you want to be most vigilant and consider installing snow bars or guards are high traffic pedestrian areas such as doorways and parking areas. (Continued)
They might have made it sound a bit too simple. Metal roof design for cold climate uses a simple principle: make sure all the snow drop to the ground as quick as possible. However, the design and installation principles behind it is quite complex and requires in-depth understanding.
Buildings has a detailed post on how metal roof designs should work during the snowy season. It’s a great read for anyone interested. Read more below.
Technical Metal Roof Specifications for Cold-Weather Applications
With conventional low slope membranes, one critical issue is the difficulty of creating a continuous waterproof membrane during cold and wet weather. Methods of forming watertight seams rely upon heat (hot asphalt, torch application, evaporation of solvents, and self-adhesion).
With metal roof systems, hydrostatic systems require correct application of field- or factory-applied sealants, while water-shedding systems rely upon gravity and capillary breaks and appropriate design of the formed seams. At higher slopes, these panels become water and ice shedders and much of the water and ice resistance is achieved with underlayments over a supporting roof deck.
Gravity loads are generally a non-issue with low slope membranes other than the dead load of the ponded water, ice, or snow. With sloped metal roofs, the load of interest is that which might drag the metal panels downslope.
When snow blankets a roof, a strong adhesive bond occurs between the snow blanket and the metal panels. This translates a vertical load from the roof surface to a vector load parallel to the panels’ surface. Sometimes called a drag load or gravity load, it represents forces that attempt to pull a panel down the slope of the roof. In cases of small, unitized metal roof products or products with multiple points of positive fixity – a singular point of attachment between the panel and the structure or substrate – vector loads are distributed over each attachment and do not have a cumulative effect. (Continued)
An exceptional roof requires an experienced and dependable roofer in London ON. If you have yet to find one, you can count on us at Cub Roofing. We have decades of experience providing quality metal roofing services for local residential and commercial properties. Learn more about our work today!