Once the roof has been stripped of all of its old shingles a check for rot and other problems is put forward and is than prepared, a complete check of all of the work that was completed is done is carried out to find out it includes enough vent holes. Proper ventilation is important, to have the ability to get rid of the excess attic warmth through the summer season and excess water vapor through the winter season. Alberta building codes specifications are adopted accordingly. We provide and install a number of ventilation solutions, includding goose neck vents, attic vents, phoenix vents, ridge ventilation etc. For max durability and greater performance we advise Ventilation Maximum air vents.