Ice dam forms when hot air rises, escapes through air leaks in the attic and melts snow on the roof. When the snow melts and sinks towards the end of the roof, the water freezes and forms ice.
Preview of the attic before the work
The client complained about the ice dams that formed on her roof in winter. This is one of the very common clues that one can notice with the naked eye when the attic is poorly insulated.
All joints and holes represent air leaks. The air you heat in your house escapes faster because of these. So, you have to heat a lot more to keep the heat in and be comfortable. It is therefore important to seal them.
Seal air leaks
Once the old insulation was removed, we sealed all the joints and holes that were on the attic floor with our expanded foam.
Isolate the access hatch
The access hatch represents a large air leak, as is often a simple gypsum board or very thin wooden board. So we insulate it with our SilverGlo insulation.
Insulate with our cellulose fiber
Once all the joints and holes are sealed, the access hatch isolated, we blow a little over 16 ”of cellulose fibers to reach an R-60 value.