WHAT IS AN ICE DAM? WHAT CAUSES THEM? WHAT DAMAGE CAN THEY CAUSE?
Updated: Feb 21, 2020
- An ice dam is snow that has melted on the upper part of your roof and refroze on the lower part of your roof.
- The melting of this snow is caused by both a lack of ventilation in the attic space and a buildup of heat.
- The buildup of ice on the lower edge can cause moisture to be pushed behind the gutters and under the shingles. The moisture can start to drip into the attic and then through the ceiling or through the soffits into the outside walls. This has the potential to cause damage to both interior finishes and structural components.
-PRO TIP- Check your insulation. Ideally you should have between 16 and 20 inches. Ensure your attic has enough ventilation. There should be a combination of both soffit vents and roof vents. This ensures that air moves from the bottom of the attic out through the top.