The higher design snow pressure applies. The slope south of downtown is described as north-facing, so a smooth panel can unload a slab onto a lower roof, a deck, or the front walk while the mall parking lot looks clear. Before you choose a profile, walk the ground and mark where people stand. Snow guards or a break in the slide path belong in the layout. A panel that "self-cleans" onto the stairs is the wrong layout even if the metal is Class A.
Ridges, eaves, and the park
FireSmart BC says to seal metal ridge terminations and to use non-combustible flashing and a metal drip edge. On a house with several dormers, those instructions multiply. Every wall that meets a panel needs a detail, not a bead of sealant as the system. Park-edge Aberdeen roofs also need metal gutters that you can clean of Kenna Cartwright needles. An open rib full of dust is an ember shelf.
Underlayment and a dry deck still decide whether the new roof leaks. Condensation on the underside is a real complaint on metal in a climate that swings from a 40.4°C extreme in the normals to mid-winter nights at the station of minus 28.6°C. Ask how the assembly handles that swing. Do not accept "metal doesn't leak" as an answer.
Mark the walk before you pick a profile
Stand at the front door, the deck, and any lower roof after a snowfall picture if you have one, and mark where a sheet of snow would be unwelcome. That sketch is more useful to a roofer than a colour name. Weight versus the old asphalt may change the permit line in bulletin 23-01. Get the product weight. This page will not guess which way the scale tips.
Tear-off context is on Aberdeen replacement. The sector's history is on the hub. Citywide cautions are on the metal page.
Call (236) 836-0303 and describe where snow would land if it slid off tomorrow.