They don't (a cite to what you read would be helpful -- you may have come across someone's opinion about what they think someone at Greenpeace thinks, or something suggested by a "nimby environmentalist" (aka nonscientist) who wants nothing to change.
Ecology changes. Natural rates of change...
> two types of siding - vinyl and stone. The same finding was found behind each.
Is there insulation in the wall cavities?
Unless the vinyl and stone have an air space behind them for water that condenses to drip down and out, those are waterproof outside walls, so any moisture that...
Also -- no offense to anyone here, but I found this guy on the Internets who has this to say:
http://www.1800gotmold.com/mold_facts/what_you_should_know_about_certified_mold_inspectors_and_certified_mold_remediators.php
"What You Should Know About Certified Mold Inspectors And Certified...
I'd say I know nothing about this, but that mold spores are found everywhere, all the time, but molds only grow in specific conditions. Some like high humidity and near-freezing temperature, and prefer refrigerators; others like high humidity and cool temperatures; I don't know of any that grow...
I've already told you more than I know (grin).
This is the best overview I've seen; the point I was trying to make is that you'll get unexpected changes if you change just one thing, and may create new problems...
Why is mold growing in the wall cavities? Moisture.
The 'Therma-Stor' whole house dehumidifier may be needed, but a smaller unit might suffice. Try tracking the temperature and humidity for a while. This cheap little logger...
> filter
Those were proposed for this design and some countries built them -- google
bwr sand filter and you'll find quite a few references. The idea seems to be that any overpressure would be vented out through a long underground sand bed, a really large area that would condense and...