Warm long johns?

I've worked construction for years in all weather conditions. Long johns and a matching long sleeves undershirt is a must for a day long exposure. The real secret is the effective wind break barrier on top of it all- the more light weight the better. The cold weather itself is not much a a problem, it's the icy wind that will get you. DriWear 100% polyester for long johns/long undershirt combo- Mark's still might be selling it and an ordinary water proof track suit for the windbreaker.
 
Yeah second the poster for merino wool. I have a couple of different brands that I alternate. Light and warm under a pair of jeans. If you're really facing the arctic apocalypse you could get some flannel lined jeans with long johns under them.
 
Silk long johns from Eddie Bauer, second choice thermals from HH. You need to keep warm and not be constricted in movement.
 
Shop at either MEC or Canadian Outdoor Equipment (shop local choice + they have quality). Spend the money on merino wool. Some technical fabric blends are good too, but I like merino much better (doesn't stink either). Avoid cotton.

PS - Buy quality and look after your shit. Wash in Woolite on delicate cycle and hang dry.
 
Thanks for the many replies, now I have to figure out if the cotton or the merino is better
 
Cotton for comfort but if they get wet you are in trouble. Becomes heavy, cold and stays wet. Merino wool works. Warm and if wet it will dry better and quicker. Marks has all you need. Amazing how poor their marketing is because they carry lots of stuff that can handle what Canada theows at us weatherwise.
 
If you're on a real budget and if they actually have it, Marks might be a good option. For me, I find that their clothes never really fit well and that the quality is off.

You can also try a SAIL store - especially when they are clearing shit out.