Lack of insulation in an attic in Laval, Qc
Challenge
Mr. Omar had ice dam problems on his roof in winter. He also had problems with condensation on the ceiling and water droplets were forming.
What was behind this problem? It is actually the lack of insulation in the attic, the presence of air leaks, and the poor ventilation in the attic.
Ice dams form when there are air leaks. The heated air quickly escapes into the attic and melts the snow on the roof. Water flowing over the roof turns to ice when it reaches the colder end of the roof. From there, huge icicles get formed.
As for the condensation on the ceiling, it is due to the poor ventilation of the attic. The soffits got clogged with wool and made the attic much damper. Moisture escaped through joints and holes and formed some condensation.
Solution
Mr. Omar contacted Systèmes Éconergie to re-insulate his attic and solve the problems he was having.
The solution was to remove the wool to seal all air leaks on the attic floor like seams and holes to prevent the heated air from escaping quickly. Put boxes on recessed lights and seal them. Clear the soffits and install vents throughout the soffits to allow air circulation in the attic. Insulate the chimney, and then blow a little more than 16 in. of cellulose fibers to achieve an R-60 value.
With our method of insulation, there will be no more ice dam problems, Mr. Omar will no longer see condensation on his ceilings and his house will be more comfortable.
Project Summary
City: Laval
Problem: Uninsulated attic
Solution: Cellulose fibers
