Do Flat Roofs Last Longer Than Slanted Roofs?

Flat roofs and slanted roofs protect your home from the elements, but does one last longer than the other?

In this post, we find out. We take a look at the key differences and the advantages that each offers. 

Flat And Slanted Roofs: What’s The Difference?

As the name suggests, flat roofs sit parallel to the ground below. You typically see them in city centres or as design concepts. 

Slanted roofs are different. These are more common among residential homes, starting higher on one side and finishing lower on the other. While flat roofs are generally asphalt shingles, slanted roofs may use various roofing materials. 

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    The Advantages Of Slanted Roofs

    The benefits of slanted roofs are considerable. 

    Longer Life

    Pitched roofs have exceptional drainage. The steep angles on either side of the ridge let the rain run off efficiently into gutters without accumulating on the roofing material.

    Slanted roofs don’t provide as much angle, but water can still easily run off. Gutters on the lower side of the roof collect rain and stormwater, drawing it away from roofing materials, and helping to improve longevity. Slanting roofs often require less maintenance than flat roofs, reducing their lifetime cost and extending their life. 

    Compatible With A Wide Range Of Materials

    Flat roofs typically use asphalt sheets or shingles. However, slanted roofs are compatible with many materials, including metal sheets, concrete, tiles and wood shingles. Both the slope of the roof and the materials increase its lifespan.

    Storage Space Conversion

    Slanted roofs may also increase the storage space available in your home. The total volume available will depend on the pitch angle. 

    The Advantages Of Flat Roofs

    There are many reasons to pick a flat roof, too, from affordability to the ability to use it as a rooftop balcony, even if they don’t last quite as long. 

    More Energy Efficient

    Flat roofs may be more energy efficient, according to official resources. Unlike pitched roofs that use a fibreglass and cavity insulation system, flat roofs have high-performance, rigid insulation combined with a membrane system to keep moisture out. Rigid insulation doesn’t leave gaps, making it more effective than slanted or pitched roof systems. 

    Ability To Install Rooftop Planting

    Flat roofs also provide additional space for rooftop planting. Owners get another floor they can use for balconies or gardens, provided the structure and materials are sufficient to support the weight. 

    More affordable

    The cost of flat roofs is also significantly less than other options. This is because they require fewer materials to span the roof gap. In Canada, flat roofs cost as little as 8.50 CAD to 15 CAD per square foot. 

    Great For Solar Panels And Air Conditioners

    Lastly, flat roofs make installing solar panels, air conditioners and other large appliances easier. They free up space for storing large appliances, negating the need to take up valuable interior space. 

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