One of the most common problems in building maintenance is air infiltration into the attic. According to the National Building Code of Canada, "the most obvious and serious problems relate to moisture-related deterioration of materials, such as rot and corrosion, which can cause assembly devices to fail." components. The infiltration of dust and other pollutants can cause a range of health problems. When the separation element is subjected to high humidity, pollutants may include fungal spores. The reduced efficiency of technical installations can promote unhealthy conditions, as well as potentially dangerous conditions during the winter season. »
In this article, we will discuss attic insulation, in order to avoid many problems in the future.
Good airtightness and a continuous vapor barrier, installed between the attic and the air-conditioned space of the property, are important, not only to save energy and reduce heating consumption bills, but also to avoid problems related to moisture condensation in the attic. Blocking the ventilation vents on the gable in the attic, improves the chimney effect which exhausts through the vertical fans on the roof, commonly called, peaks.
To ensure a good seal, critical areas between the attic and the conditioned space must be sealed.
They are as follows:
1. Attic access hatch
a. The attic access hatch requires a seal (neoprene) in good condition around its perimeter and must be thick , so that contact with the seal is effective. The neoprene seal will limit the passage of hot air inside the roof space and therefore energy costs, as well as the risks associated with condensation, on putrescible elements. It must also offer an insulating factor of the same magnitude as the insulated ceiling itself, in order to prevent heat loss from the building and the risk of condensation. Minimum insulation factor R30.
2. Plumbing vents
a. Plumbing vent pipes that pass from the ceiling of an air-conditioned room to the attic must be well sealed and airtight against air infiltration between spaces.
3. Wiring holes
a. As explained for plumbing ventilation, the holes made in the attic floor to pass electrical wiring must be well sealed against air infiltration.
4. Chimney or flue
a. Particularly during winter , when the chimney is in operation, infiltration occurs on the wall of the chimney and between the joints of the chimney pipes.
5. Recessed light
a. Gaps between the recessed light and the attic floor can be a source of air infiltration if not secured, carefully insulated and sealed.
6. Windows and doors
a. Windows and doors located in the attic are another source of air exhaust that require good sealing.
7. The dwarven walls
a. Certainly, the habitable space in the attic is very interesting, but it increases the possibility of air infiltration between the two rooms. So all cavities and gaps should be checked regularly to ensure they are properly sealed.
Indeed, there are other possibilities for air infiltration into the attic which are not discussed here. Any of the small possibilities that we have pointed out in this article, could cause a major problem in the future. It is the duty of a building consultant, to find these clues, while inspecting the property.
At Habitation Prestige, our inspectors try to protect you against major problems, by carrying out the inspection using their relevant experience and the technological and specific tools at their disposal.
Take advantage of our building expert services, it’s reassuring! We are here to help you and find solutions and alternatives to resolve your building problems.
C ontact us by email at info@habitationprestige.com or by text at 514-742-4663 and we will call you quickly to discuss your needs.
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