Winter Roof Damage Problems

1/29/2020 (Permalink)

Icicles hanging from your roof and gutters cause damage.

1. Ice Dam Formation

When warm air rises from your heated living spaces, it warms the shingles of your roof and the snow that covers it. This leads to snow melting and dripping down to the colder edges of the roof where it refreezes as ice. Once the ice grows thick enough, it backs up further snow-melt behind it, causing water to seep under the shingles, and eventually into your home through leakage points. Leaks are made the more likely when backed up water freezes and thaws, working its way into nooks and crannies and expanding them. The number one way to prevent an ice dam is by insulating and ventilating your attic, but you can also lower the risk by cleaning out gutters and downspouts in late fall and using a roof rake to remove snow from the roof's edges. You can also install heat trace cables in the gutters to keep melting snow flowing, thus preventing backups.

2. Icicle Formation

Icicles often result from the same kinds of conditions that cause ice damming. While they may seem harmless, they can actually damage shingles and gutters as well as break and fall on those walking below. Eliminating roof-top air leaks and better insulation will reduce icicles as much as ice dams, but you can also carefully dislodge them with your long-handled roof rake or by climbing up near them with a ladder. Be sure the ladder is securely footed, not on ice, and never walk on an icy roof.