S Speed254 said:
We have no mechanical ventilation, when we bought the house there were no air vents in large parts of the house, now we have drilled a few new ones to get a bit better ventilation.

We have had mixed opinions from people working in the industry. Some have said without a doubt that it's the sills that smell in our house while others have said they don't smell anything at all.

You don't want to waste a lot of time and money and still have the problem. But we might as well take out a few pieces and try to smell them? I think the asfaboard smelled a lot when a piece was just taken off but the smell has started to fade now.
Things like this can be hard to find the cause of but you can't have a constant odor problem, so it has to be solved.

I think the sill can be fine in some stretches but moisture-damaged locally.

If you do a VOC and MVOC measurement, you will get an answer on whether there is any microbial abnormal growth or if any building material is reacting chemically. That's the best idea I can come up with to start with. Possibly, for example, OCAB can perform such a measurement.
 
S Speed254 said:
We don't have mechanical ventilation, when we bought the house there were no air vents in large parts of the house, now we have drilled out a couple of new ones to get a little better ventilation.

We have had mixed opinions from people who work in the industry. Some have said without a doubt that it's the syllar that smell in our house while others have said they don't smell anything at all.

You don't want to waste a lot of time and money and still have the problem. But I guess we'll have to take out some pieces and try to smell them? I think the asfaboard smelled a lot when you just took out a piece but the smell has begun to subside now.
How did this go? 🧐
 
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