You know that moment when icicles start hanging off the gutters and they almost look nice, then a week later you spot a brown stain creeping across the bedroom ceiling? That is an ice dam doing its damage. Ice dam prevention stops it before it gets that far by sealing the warm air leaks that let your attic melt snow it has no business melting.
We’ve spent more than 25 years chasing leaks most homeowners never knew existed. Curious if yours is at risk? Your free evaluation is one call away.
The key to ice dam prevention is insulation. The idea is to prevent warm air from entering the attic and leaving the roofed surface near the outside temperature. A cold roof which remains cold and allows snow to melt slowly and fall off as it should. Now skip that step and the heat from your home goes straight up to the attic, warms the roof surface unevenly and begins the melt and refreeze process that leads to ice buildup in the space where your roof line connects to the gutters.
Water collects under your roof shingles and works its way into your ceiling and walls. We have seen what that water damage costs to fix, and it is never inexpensive. The prevention of ice dams comes down to one thing, controlling heat loss before it ever reaches the roof. Spray foam insulation happens to be exceptional at that.
Snow on a warm roof surface (e.g. roof ridge) melts first. That meltwater flows down the slope and reaches the cold eave, where there is hardly any heat below, and freezes again.. Do that enough times during one winter and you end up with a thick ridge of ice strong enough to back water up under your shingles.
Here is something most homeowners in New York and Connecticut get backward. A roof buried in snow after a storm usually means the insulation underneath is doing its job. If your neighbor’s roof is bare while yours still has a fresh blanket of white on it, that is a good sign, not a bad one. Preventing ice dams on the roof starts with understanding that uneven melting, not snow itself, is what to actually worry about.
Most of this hides in plain sight until it becomes a real problem. Watch for these:
See even one of these at your place? Your attic is probably losing more heat than it should, and ice damming prevention needs to jump near the top of your to do list.
On all jobs we approach ice dams the same way, sealing off where the heat is flowing from your living area in your home into your attic area above your home.
The roof surface is pulled into the thermal envelope of the home by insulating the roof deck, and the temperature difference between the roof deck and outdoor air is minimized regardless of how cold it is outside.
Heat cables, roof rakes, rock salt, none of them touch the cause. They might carve a channel through ice already there, but the next storm just builds it back, and most need redoing every season. Spray foam works differently because it goes after heat loss directly. When used as an air barrier and thermal barrier, closed cell foam prevents air leakage around wiring, vents, and light fixtures that loose fill insulation cannot reach.
Preventing ice dams, whether it’s for one storm or for good, depends on choosing something that will last. Closed cell spray foam does not sag or settle, and maintains its shape and performance for 80 plus years.
The conditions that produce ice dams begin to fade away at the same time that we finish. After your attic is sealed and insulated properly, the temperature difference between the attic and the outside air decreases rapidly, and you’ll have steady and slow snow melt rather than the formation of ice along the edges. Most of the time homeowners also start to notice a reduction in their heating costs and quicker warm up upstairs as those same leaks were allowing heated air to escape from their home everyday anyway.
You do not have to live with ice dams every winter. If you are ready to break the freeze and refreeze cycle wearing down your roof, our team can start with a free attic inspection and a plan built around your home, not a generic checklist.
We’ve spent more than 25 years protecting roofs across Connecticut and New York, and we would be glad to add yours to that list. Reach out to The Eco Foam Insulation today and get your evaluation scheduled.
To avoid ice dams on a roof, seal all air leaks in the attic and insulate sufficient enough to maintain a cold roof during the winter. Spray foam does both at once.
In most homes, yes, spray foam eliminates or dramatically reduces ice dams because it removes the heat source causing the melt and refreeze cycle. Direct sun exposure or a sudden warm spell can still cause minor melting on parts of a roof, that part is just physics.
It depends on your attic size, your current insulation, and how your roof is built, so we provide a free evaluation and a written estimate before any work starts. No guessing games.
The coverage is subject to policy provisions, please consult your specific policy. However, there are many companies that would consider this kind of work to be a wise strategy for preventing a costly water damage claim in the future.
