An ice dam has the potential to cause serious damage to both
your roof and the inside of your home. It is important to take the right steps
to protect your home from the risks associated with heavy snow and ice.
What is an ice dam?
An ice dam can form when
water from melting snow re-freezes at the edge of your roofline. Without roof
snow removal, the ice dam may grow large enough to prevent water from draining
off the roof. The water can then back up underneath the roof shingles and make
its way inside your home
Immediate steps you can take:
- Clear downspouts. An easy way to help snow and ice
drain off your roof is to make sure the area around your downspouts is
clear. This will make it possible for your gutters to drain when snow does
melt. It will also help prevent flooding when the snow and ice melts.
- Remove snow from your roof after every storm. Use a
roof rake to clear the first three to four feet of snow from your roof
immediately after each winter storm to prevent ice dams from forming.
While the amount of snow and ice that your roof can handle may vary
depending on a number of factors such as the roof type, age and condition
of the structure, a good rule of thumb is if there is more than a foot of
heavy, wet snow and ice on your roof, you should try to have it removed.
Longer-term prevention:
Ultimately, the best
prevention for ice dams is to eliminate the conditions that make it possible
for them to form in the first place.
- Insulate your attic. Make sure your attic is well
insulated to help prevent the melting-and-freezing cycle that causes ice
dams to form. Check and seal places where warm air could leak from your
house to the attic, including vent pipes, exhaust fans, chimneys, attic
hatches and light fixtures.
- Install a water-repellent membrane. When replacing a
roof, make sure to install a water membrane underneath the shingles. This
acts as an extra barrier that helps prevent water from seeping inside the
building.
Removing snow from your roof
Clearing the first three
to four feet of snow from your roof immediately after each winter storm can
help prevent ice dams from forming.
- If you have a flat roof that is easily reached from an
interior stairway, you may want to shovel the roof. When de-icing,
remember to put safety first any time you are on a roof, especially one
that is covered in snow and ice. If you have any doubt, leave it to the
professionals.
- If you have a sloped roof, it may be possible to remove
the snow and ice using a roof rake, a long-handled tool designed
specifically for this purpose. Stand on the ground and pull as much of the
snow off the eaves as you can safely reach. It is not necessary to remove
all the snow; removing the first three to four feet of snow closest to the
gutters will help alleviate these issues.
- If you cannot reach the roof, many homebuilders,
landscaping and roofing contractors, and property maintenance companies
will remove snow and ice from roofs. Before hiring a contractor, Travelers
encourages you to check references. Always be sure your contractor is
insured and bonded.
We do not recommend
using a ladder in snowy and icy conditions. This can be extremely dangerous and
is best left to professionals.
Removing ice dams
Just because an ice dam
is present does not necessarily mean water has penetrated the roof membrane.
However, it is always best to remove ice dams before they have the opportunity
to cause damage. To determine if you have damage, look for water stains or
moisture in the attic or around the tops of exterior walls on the top floor.
- If you can reach the roof safely, try to knock the ice
dam off with a roof rake, or cut a channel through the ice to allow
standing water to drain.
- If you cannot reach the roof safely, consider hiring a
contractor to remove it.
- Another method is to fill a nylon stocking with calcium
chloride ice melt and place it vertically across the ice dam so that it
melts a channel through the dam. If you try this method, make sure you can
safely position the ice melt on your roof, and make sure to use calcium
chloride, not rock salt. Rock salt will damage your roof. Also be aware
that shrubbery and plantings near the gutter or downspout may be damaged.
- Look carefully at large icicles. If the icicles are confined
to the gutters and there is no water trapped behind them, this does not
indicate the presence of an ice dam. However, large icicles can pose a
danger to people when they fall off. Try to safely knock the icicles off
from the ground, making sure not to stand directly beneath them. If you
cannot reach them safely from the ground, consider hiring a contractor to
help.
Generally speaking,
property owners are responsible for the cost of preventive maintenance.
However, each claim is unique, and coverage and claim decisions always require
an expert analysis by a licensed Claim professional. Keep in mind that the cost
of snow removal is likely to be considerably less than the cost of roof damage
or interior property damage caused by water leaks.
Please let us know if you have any questions.
-David Goodwin & the staff at Immanuel Insurance
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