Hey,

Bought about 500m of wooden battens from K-Bygg (Fresks) and I've done this in two rounds.
Took the timber "inside" and this last time when I opened the bands to set up, they are wet and black on large parts of the wood.

So my concern is that it might be black mold because I've planned to use these battens indoors to install a ceiling.

What do you think?
 
  • Close-up of a wooden board with black spots, possibly mold, against a wooden floor background.
  • Wooden planks with dark spots, possibly mold, surface visible in stacks, concern for indoor use due to potential black mold presence.
  • Stacked wooden battens with black discoloration, possibly mold, on their surfaces, suggesting moisture damage.
  • Wet wooden battens showing black spots, possibly mold, intended for indoor ceiling installation.
It sometimes happens due to poor storage, dampness, and bad airflow, but there's no danger as long as they end up in a dry place to dry out. Then it dies off and just becomes visually unappealing. There won't be any further infestation just because it was previously affected. However, it's important that it gets a chance to dry properly before it's nailed back with surface layers and possibly plastic.
 
Yes, that is mold and should definitely not be installed indoors!!
 
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Staffans2000
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Matti_75 Matti_75 said:
Yes, it's mold and it should definitely not be installed indoors!!
and what do you mean happens then when it's dry?
 
Yes, it dries and dies, but it's still boring to bring in such things, so it's just about replacing it with dry timber.
 
MathiasS MathiasS said:
Yes, it dries and dies, but it's still annoying to bring in such things, so it's best to have it replaced with dry timber.
Yes, but it doesn't necessarily have to be damp now. It could have happened anywhere along the chain. You should definitely check it, and if it's dry, then I consider it completely risk-free. There won't be more mold spores there than what already exists naturally in the air anyway.
 
A mold damage that has dried does not become risk-free just because it has dried. Dead particles and spores from mold fungi still contain substances that can be unhealthy to inhale.

Black mold is also not a specific type of mold fungus; there are several types of mold that are more or less black in color.

The timber should be replaced, or alternatively, the growth can be mechanically removed using, for example, a plane (just don't do it in the living space). The timber should also be thoroughly dried.
 
Centano Centano said:
A mold damage that has dried does not become risk-free just because it has dried. Dead particles and spores from mold fungi still contain substances that can be unhealthy to inhale.

Black mold is also not a specific mold fungus, but there are several types of mold that are more or less black in color.

The timber should be replaced, alternatively, the growth should be mechanically removed using, for example, a plane (just don't do it in the home). The timber should also be thoroughly dried out.
You mean that the possible spores from such things exceed the levels of mold spores we naturally have in the air? What leads to health problems are viable infestations that thrive and where levels become too high.
 
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Staffans2000
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S Stefan1972 said:
You mean that the possible spores from such things exceed the levels of mold spores we have in the air naturally? What leads to health problems are still viable infestations that thrive and where the levels become too high.
I didn't say anything about levels at all. What I wanted to highlight, and this was perhaps more general than specific to this case, is that mold damage is not harmless just because it's dry.

Regarding the amount of spores, it's very personal who reacts to mold damage or not. I think the precautionary principle should be practiced. If this was a matter of new production and there is ongoing moisture safety work, the wood would have been replaced. If it was minor damage, the damage would be planed away.

In TS's case, it sounds like the wood ends up on the outside of the plastic foil, which is better if you now insist on using the wood. Personally, I would have replaced the wood or dried and planed it off.
 
Thank you for all the answers!
I called Fresks and will go in with one of the pieces because they absolutely didn't think it was black mold, but more about blueness or something about the bark. The person in charge there said that if it had been black mold, they would have heard it from others.. but I will still go in and we'll see what they say.

And yes, they will end up on the inside of the plastic.
 
  • Insulation and wooden beams on a ceiling structure, viewed from below during a construction project.
S Stefan1972 said:
Well, it doesn't have to be humid now.
But TS said it was humid now.
 
MathiasS MathiasS said:
But TS said it was damp now.
Now that they have been inside for a few days, they have dried, but I will still let them sit for a while longer before/if I put them up. But I'll see what they say at Fresks too, maybe I can wash with some solution just to be safe.
 
Washing that makes no difference. There are still thirty-eleven billion spores in the air ............
 
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Staffans2000
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If they will be sitting where an inspector can see it, it will be noted as a point to watch in an inspection report during a sale. No matter how harmless it is, it does not exactly increase the price. If it can be seen, as mentioned.
 
Hm, okay then I should probably aim to try to exchange them.

At least I've been lucky to get dry and nice packages 50% of the times :)
 
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