How To Prevent Ice Dams

On Friday, November 10th, 2017
How To Prevent Ice Dams – Ice dams occur after a heavy snowfall when the warm atmosphere in the loft causes the roof to heat and the snow to melt. The ice cubes meltwater, which may float up under shingles and trickle through the roof in your residence, causing wet and stained ceilings and walls, and peeling paint and rust. In this guide, we will let you know the very best strategies to prevent ice dams. Take care of problem spots, and You’ll appreciate a winter with icicles and the harm they could do to the roof

Preventing ice dams is straightforward, in principle: Simply keep the whole roof the same temperature because of the eaves. You do so by increasing ventilation, including insulation, and sealing off each possible air flow which may heat the bottom of the roof, as shown in the illustration below. By taking care of those trouble spots, recorded here in order of priority, you ought to appreciate a winter free of dams and use significantly less power to boot.

Stop ice dams with a cold roof
This only happens when a part of the roof warms to over 32 degrees F, hot enough to melt the snow, while the roof border remains below freezing. This situation is frequently the effect of a sunny loft. In most houses, heat flows through ceilings to the attic and warms the timber and shingles directly over it. Even though the exterior temperature is below freezing, the snow melts over the heated section of roofing. After the meltwater runs down the roof, then it strikes the cold border not heated by the loft. There it stinks, developing a rim of ice hockey. This rim could expand, trap more water from it, and you’ve got a full-fledged ice dam. The secret to preventing ice dams is just to maintain your loft and roof chilly. A warmer roof, though, will shortly have prominent places where the snow has melted and might have icicles hanging from the eaves.

Cap the Hatch
An unsealed loft hatch or whole-house enthusiast is a large opening for heat to escape. Cover them with weather-stripped caps created from foil-faced foam plank held jointly with aluminum tape.

Exhaust to the Outside
Be certain the ducts connected to the kitchen, toilet, and dryer vents all right outside through the walls or roof, but not through the soffit.

Ventilate Eaves And Ridge
Both ridge and soffit vents should possess the same size openings and supply at least 1 square foot of opening to each 300 square feet of attic floor. Place baffles in the eaves to keep up a clear path for the airflow from the soffit vents.

Add Insulation
More insulation on the attic floor retains the heat where it goes. To discover how much insulating your loft wants, check with the regional building department.

Install Sealed Can Lights
Old-style recessed lights give off fantastic plumes of heat and can not be insulated without producing a fire hazard. Replace them with sealed “IC” fittings, which may be covered with insulating material.

Caulk Penetrations
Seal around electrical wires and vent pipes using a fire-stop sealant. Also, start looking for any areas where light beams up from under or the insulating material is stained black from the dirt out of passing air.

Flash Around Chimneys
Bridge the gap between the chimney and house framing with L-shaped steel flashing held in place with unbroken beads of a fire-stop sealant. Using can spray foam or insulation isn’t fire safe.

Seal and Insulate Ducts
Spread fiber-reinforced mastic on the joints of HVAC ducts and exhaust ducts. Cover them entirely with R-5 or R-6 foil-faced fiberglass.

What to do if you already have an ice dam

Ice dams themselves are not always an issue. It is the escapes which do the majority of the harm. If you can not detect indications of congestion, either at the soffits on the exterior or in the loft or ceilings, then you might not need to do anything. Afterward during warmer weather, then use the prevention approaches we recorded before. In case you have leakage from an ice dam and can not melt down the snow off the roof, then an ideal method to eliminate the ice dam would be to hire a roofing company to steam off it. A steamer is similar to a pressure washer, except the water is sexy. It melts the ice off without damaging the roofing. Chipping the ice away using a hatchet or an ice pick may break or puncture the shingles. How To Prevent Ice Dams