Just finished a home inspection that brought up a major issue. The in-floor heating system in the basement was distributed with a tubing called Kitec. Definition "Kitec plumbing consists of flexible aluminum pipe between an inner and outer layer of plastic pipe (PEX pipe) with brass fittings. Marketed as a cheaper and easy-to-install alternative to copper piping, Kitec was sold between 1995 and 2007 for potable water, in-floor, and hot-water baseboard heating systems." This includes homes in Alberta.
It turns out that this company is in the middle of a class action lawsuit in Canada and the US. http://www.kitecsettlement.com/
I mention this mainly because I feel this should be considered a defect that should be disclosed by the Seller, but it just doesn't seem to be happening. This is an expensive fix! Alberta's listing contracts state that you must disclose in writing if there are any defects that would be expensive to fix. This is definitely an expensive fix, and it causes Buyer's to pay around $500 for a home inspection to find this out. In the meantime, the homeowner should have disclosed it at the time of the offer.
Sadly, a Buyer may buy this home not knowing of the Kitec issue, maybe not wanting to have a home inspection done by a qualified home inspector or having an inexperienced home inspector.
There are so many other issues that one should be made aware of when buying a home. Using qualified professionals can help save you thousands in the future.