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Is TPS (Treated Pine Spruce) a good replacement to go to?

April 26, 2017good Pine replacement spruce TPS treated

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Is TPS (Treated Pine Spruce) a good replacement to go to?

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A. We don’t know; the building code was changed on June 1st, 1998 to specify pressure treatment for any pine shakes used for roofing . . . However, TPS is a “mixed species” nature, meaning it has other woods besides pine, such as spruce. TPS has not been CSA approved! [See our concerns about TPS on the “What’s New” page of our web site.