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Why are all of the comparisons to untreated lumber? Shouldn’t they have tested against pressure-treated lumber too to see how well it performs against that?
by Olreich 7y ago
Why are all of the comparisons to untreated lumber? Shouldn’t they have tested against pressure-treated lumber too to see how well it performs against that?
- IanCal 7y agoIt depends what you're trying to show. "Does this process change the wood in certain ways" and "does this process change those properties more than other processes" are different questions, and it seems reasonable to start with the former.
- horsawlarway 7y agoI'm not familiar with all types, but most pressure treatments don't attempt to stop water uptake, they just impregnate the wood with pesticides/fungicides. It's not there to stop the water, it's there to stop termites, fungi, mites and other pests that can degrade or threaten the integrity of wood. That's why most exterior decking should be sitting on something like this (https://www.amazon.com/Simpson-Strong-Tie-ABA44Z-Gauge-20-Pack/dp/B002LOT0TA?ref_=fsclp_pl_dp_5 https://www.amazon.com/Simpson-Strong-Tie-ABA44Z-Gauge-20-Pa...) to prevent water uptake. I'd be curious to see how this compares to treated wood for their mold test, though. That seems like a really valid test.