Flat Roofing Calgary

When I mentioned to my brother that hubs and I have plans of re-roofing the house, he mentioned Flat Roofing Calgary.  He says he also used this when he changed his roof three years ago.  His roof has been to extreme weathers since then but both heat and cold seemed nothing to his still roof.  We are having lots of rains lately and there's a leak coming from the kitchen roof.  Hubs thinks that since we're re-roofing the kitchen, might as well re-roof the everything so everything will be done at once.  He already checked the flat roofing and he's seriously considering it.