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Winter weather can make your home’s roof prone to damage. Snow and ice, as well as freeze and thaw cycles, can cause several issues that can result in significant roof repair costs. 

Read on as your trusted roofing and siding contractor, Century Roofing and Siding, shares how to prevent common problems that residential roofs experience in winter. 


Condensation occurs when warm air meets a cold surface. An insufficiently insulated attic is prone to this problem. This issue can lead to mold and mildew, which can damage your interior. You can prevent condensation by making sure your attic is properly insulated. Poor ventilation can also cause damage to the decking and ice dams to form, compromising the structural integrity of the roof.

Surrounding Trees

While having a lot of trees around your home can make your property more scenic, they can pose dangers to your roof and gutters. Overhanging tree limbs can scratch against the roof surface and damage its protective top layer. Fallen branches and leaves can cause your gutters to get clogged. Protect your home by trimming branches within six feet of your roof. 

Ice Dams

Ice dams form when the higher areas of an icy roof start to thaw while the lower parts are still frozen. Melting snow and ice from the warmer parts of the roof flows down and freezes again on the lower sections and gutters, creating ice dams. Water that pools behind the dam can enter your home through the cracks and joints in the roofing material.  


Icicles pose danger to your family and pets. They are often a result of clogged gutters and downspouts. The excessive weight of icicles can damage your roof and gutters. Prevent this problem by keeping your gutters clean and regularly maintaining them. 

At Century Roofing and Siding Ltd, we’re here for all your residential roofing needs. We also offer eavestrough cleaning and siding replacement. Call us at (613) 738-1774 or fill out our online form to get a free estimate. We serve homeowners in Ottawa, ON, and areas around Ontario.