The builder of our home used pressure treated lumber for our deck. I prefer the natural beauty and characteristics of cedar lumber, so decided to replace the pressure treated decking with western red cedar. In addition, I wanted to add a screened enclosure so we could sit out at night. I find that Perkins Lumber has the best prices, selection and quality of western red cedar in the Ottawa area. In my experience, the larger box stores tend only to carry the more common dimensional lumber rather than a good selection. Perkins Lumber also is well staffed both in the store and in the yard. You do not need to wait for someone to fill your order, or to have to load it yourself. They give you the impression that they are happy to have your business and also yourself as a customer.