There is a big neighbourhood in Edmonton called Wedgewood, full of great people who took great pride in purchasing a beautiful dream home with a very nice rustic looking Cedar Roof.
The community has rules that all the roofs have to be done in Cedar or Tile, no asphalt Shingles.
Now the bare minimum to install the roof in Alberta is to nail it into the plywood roof surface, the problem with that, is that Plywood is just sawdust and glue... and doesn't hold nails in very good. This is fine to get the look of cedar, but to get the reliability you need proper ventilation. You also need for the cedar to not move.
When hundreds of pounds of snow rest on the roof, and press it down, then melt, the nails wiggle out of the plywood. So water and ice get in, freeze, and push the wood up causing it to crack, mold, and look ugly, WAY earlier than they should.
This whole community is only 17 years old yet most of the roofs need to be done when Cedar should last 30-40 years in Alberta climate.
In British Columbia, the plywood is prepared first with pine boards making a grid that allow airflow under the cedar, and also makes for a tighter stickier place for the nail to be put in.
In fact, this is exactly how the manufacturers booklet says it should be done, in order for home owners to have a valid warranty.
It is almost unfair that the nice home owners in wedgewood spent all this money on their homes to have a purely cosmetic cedar roof without any of the reliability.
Now the cost of Cedar done properly will cost 20% MORE, because it takes 200% as much time to install, BUT.... You will also have 200% more life out of the roof. This means that if you re-do the roof when you buy the home, you won't have to do it again before you leave, in order to sell the home.
So instead of paying $16,000 twice, for example. You can pay $19,000 once! Plus you will get a 50 year warranty from the shingle maker, and a 10 year workmanship guarantee from us!