The lead-based paint in the home poses the most serious threat of contamination to health. It may have been used outdoors until 1990. Lead service entrances are the second source of danger for occupants of buildings constructed before 1970.
The carpenter ants affect buildings by attacking the wood. As they prefer damp, rotten wood, their presence may indicate a problem with moisture or decaying wood structures. The queen of the colony has a life expectancy of 17 years!
Faced with the bad publicity given to the Poly-B product , the manufacturers ceased its production in 1995. The Kitec system replaced it until 2007. Although no case of breakage has been reported in Quebec, the Kitec is a serious problem; Several insurers do not want to know anything.
While properly maintained aluminum wiring is acceptable, it will generally fail faster than copper. Insurance companies are also reluctant to insure a building that contains it because of the risk of fire.
For some, oil heating is indeed a sustainable solution. However, the contamination that the 40,000 abandoned tanks in Quebec can cause represents a real “time bomb” for new buyers.
The asbestos fibers are flexible, durable and resistant to high temperatures. They can be used as insulation to reduce heat or noise. Buildings constructed or renovated between 1930 and 1990 may contain some.
Marketed in Canada from the late 1920s to the early 1990s under the name Zonolite , this ore from the Libby mine in Montana is impregnated with tremolite: the most dangerous form of asbestos. It represents a risk of cancer.
Since the early 1980s, urea-formaldehyde foam (UFFI) insulation has been banned in Canada due to its negative impacts on health. There are still many houses whose walls contain MIUF.
The fungi thrive in any conditions subject to moisture (water infiltration, condensation, etc.). They are found on walls, ceilings, windows, floors, insulation and lining of air ducts and in the basement.
The iron ocher result of a bacterium that occurs naturally in soil and which manifests itself in the form of a reddish mud, slimy and smelly. There may be no visual or physical sign to suggest its presence.