Sorry to hijack the thread...
but Pierre... seeming as you reside in Canada, I highly doubt that you have ever come into contact with fabrics sold here. Most if not all can be washed on at least 40 degrees - that is what is right there on the label. In fact I have one or two dark shirts that recommend being washed on 60 degrees. Perhaps either fabrics here are a) better made, or (more likely) b) clothing and linen manufacturers here are more trusting of consumers and less scared of being sued.
Guess what - most of my washing is washed day in day out on at least 40 degrees and nothing has been damaged in all the years I, my mum, my grandparents, and the rest of the country have been doing laundry on washes at these temperatures.
If anything it is machine drying that does the most mechanical damage to clothes, but I bet most don't think twice about baking clothes in a dryer that they have just washed on a cold wash to "protect" the fabrics.
Either way, we have gone off the subject, and your attitude is not appreciated... I suggest you research before you post in future.
Jon