If you live in Calgary, chances are you are already familiar with the
long winters and heavy snow cover. But one winter roofing issue
that many homeowners encounter is the ice dam which is a pileup
of ice along the roof’s edge that prevents melting snow from
draining effectively. This can result in leaks, roof deterioration, and
even mold. At Straight Path Construction, we assist homeowners
in getting a step ahead of the damage with intelligent, long term
solutions. Below is how you can avoid ice dams and keep your roof
safe throughout the winter.
What Is an Ice Dam?
An ice dam occurs when warmth inside your house leaks out
through the roof and melts snow from the top down. The melted
water flows off the roof, reaching the colder eaves where it
re-freezes into an ice barrier. Gradually, water accumulates behind
the dam and seeps under shingles, leading to leaks and damaging
ceilings, insulation, and walls.
Improve Attic Insulation
One of the best methods of preventing ice dams is to install insulation
in your attic. This keeps warm air trapped in your house and
doesn’t allow it to heat the roof deck. Good insulation maintains
the roof surface temperature at a consistent level, which slows
down snowmelt and ice buildup.
Ensure Proper Roof Ventilation
Proper attic ventilation directs cold air to flow through the attic and
forces warm air out. This keeps the bottom of your roof cool
during winter, which stops uneven snow from melting. A well-balanced
system of intake vents and exhaust vents is necessary for this.
Seal Air Leaks and Gaps
Warm air tends to leak through tiny openings around light
fixtures, plumbing, or attic hatches. Caulking or insulating such air
leaks with foam reduces heat loss and sustains a cold roof. The
lower the heat loss in the attic, the lower the ice dams’ risk of forming.
Use Ice and Water Shield Membranes
When replacing or repairing a roof, it’s a good idea to put ice and
water shield membranes behind the shingles in the eaves and
valleys. These barriers are watertight and prevent water from
entering your home even when ice dams develop on top of them.
Straight Path Construction always includes this protection on new
Calgary roofing systems.
The Role of Heated Cables
For houses that consistently experience ice dams even with decent
insulation, heated roof cables can provide extra security. These
electrical cables are placed along the roof edge and gutters to melt
ice and snow, allowing water to flow safely off the roof. Though
they’re not a long-term fix, they’re helpful for trouble areas or
older roofs where complete upgrades aren’t feasible. Our team at
Straight Path Construction can help assess whether heated cables are
a good option for your home.
Why Regular Roof Inspections Matter
Preventing ice dams is not all about installing insulation—it’s about
understanding the state of your roof. An annual roof inspection
can reveal unseen problems such as faulty ventilation, damaged
flashing, or lacking insulation that put you at risk for winter roof
damage. At Straight Path Construction, we provide complimentary
winter roof inspections in Calgary to assist homeowners in getting
ahead of ice dams and preventing high-priced repairs before spring.
Clear Snow Safely
Following a snowfall, clear snow from the roof edge using a
long-handled roof rake when on the ground. This discourages snow
from accumulating and refreezing into ice dams. Do not climb on
an icy roof reserved for trained professionals if the need arises.
Final Thought
Ice dams are a frequent occurrence in Calgary’s winter weather,
but they are also avoidable. By enhancing insulation, sealing leaks,
and ensuring proper ventilation, you can save your roof from costly
repairs. Straight Path Construction constructs and repairs roofs that
can withstand Alberta’s harsh winters.
Call to Action
Are you concerned about ice dams on your roof?
Call Straight Path Construction or visit our website to schedule a
free winter roof inspection and receive expert guidance on protecting
your home from cold weather damage.
