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Ice Dams

In northern areas where winter temperatures frequently drop below freezing, a phenomenon known as an “ice dam” can cause serious and expensive damage to a roof and to the structure of a home.

Ice dams are formed at the lower roof edge by the cycle of thawing and re-freezing of melted snow on the overhang. When snow accumulates on the roof, the weight and pressure of the snow pack compresses and can form a layer of ice on the roof deck.

Warm air in the attic heats up your roof deck and melts the bottom layer of snow or ice that is sitting on your roof. The water then trickles down toward the roof’s edge where it once again encounters frigid air, causing the water to refreeze. Gutters that are clogged with last fall’s leaves can make the situation even worse.

The refrozen snow melt forms an impassable ice dam that can force water up and under shingles, causing leaks in your roof. A leaky roof can lead to a host of other structural problems in your home, including warped framing, stained walls and ceilings, and weakened foundation.

Preventing ice dams from forming requires several steps. The most important is ventilation.

Proper roof ventilation installed by a professional roofer can help prevent the formation of ice dams. A quality ventilation system helps balance the temperature differential between the air in the attic and the air outside. This minimizes the chance that the snow pack on your roof will melt from the bottom up.

By balancing the temperature of the roof, the first step in the formation of ice dams is eliminated. The snow will not thaw and then re-freeze since the temperature will not change dramatically enough for that to occur. This will keep your roof, and your home, safe from the dangers of water damage.

A second step is to make sure gutters are clear of debris and blockage, allowing snow melt to flow freely. A gutter protection systems can help keep gutter troughs clear.

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We Were Totally Pleased

A Plus Roofing recently replaced our roof, and we were very pleased with their professionalism, attention to detail, and the overall quality of the job they did. From the initial quoting process, during which Bill Kain explained how they would do things and the extra things A Plus Roofing would do to make the job look and go well, to the care of the actual workers in protecting everything around our house as they did their work, to the final cleanup of the job, we were totally pleased with our choice in contractors. I plan to use A Plus Roofing for other work on my house in the future (gutters done with roof, siding and window work in the plan), and I will heartily recommend them to all of my friends and neighbors without hesitation. 

– Henrico

Very professional

Very professional. Did exactly what they said they would do. No surprises.

– Hanover

Excellent Experience

The experience with A+ Roofing was excellent. I would recommend this company for their courteous, professional, and efficient service and expertise. We are most pleased with our new roof and the workmanship of the project. The roofing crew was amazing to watch....so hardworking and professional. Mr. Kain was in touch during the whole project and we knew were in good hands. Many thanks! 

- Chesterfield

We Are Very Satisfied

This was our first roofing experience. We checked the company out online and asked the company for references from previous jobs. I talked to two previous customers (1 asphalt roof and 1 metal roof on residential homes) and both couldn't say enough good things about the company, their crews and the quality of their work. We are very satisfied and would definitely recommend them to others.


Would Definitely Recommend!

The team was professional and thorough. The house looks like a completely different house with the beautiful new roof! There was not a speck of debris left in our yard. After the roof was on and the materials were cleaned up, I was impressed to see the workers carefully going around our whole property using giant magnets to pick up any loose nails that may have fallen.  We've had over a foot of snow and several heavy rains and have been very snug under our new roof. Would definitely recommend! 

- Henrico