I got hold of old 50x200 floor planks (might have been used in an outdoor storage or something similar) that I was planning to build an outdoor sauna with. The idea was to plane one side and tongue-and-groove them to build in a log cabin style. I did a little test planing today and discovered that the wood is partially green. The green is on the outer edges on both sides of each plank. The center part is light and nice, but about a quarter is green from both sides. Now I suspect the boards are cut from old telephone poles. If that's the case, I don't want to use the wood in a sauna. My question is whether there might be another reason for the color...? It doesn’t look like mold and it might be a little too deep to be that. I’m afraid each plank is the middle cut of a telephone pole...
Is it really green and not blue-toned?
If Blue-toned, then it's blue mold... Meaning moisture damaged.
If Blue-toned, then it's blue mold... Meaning moisture damaged.
Is it pine? If so, it is probably blue-stained. It is a fungus that attacks the sapwood if the timber is harvested and stored as whole logs for too long during the wrong season. It can also develop after sawing when it is dried in the lumber yard. It is not directly dangerous but has an increased ability to absorb moisture.
Last edited: