Rain can be one of the main enemies to the integrity of your cob structure. But at the same time, cob walls can actually withstand a tremendous amount of water hitting them and still be fine. Its more the slow “drip” and consistent dampness that we want to avoid.
So, we want to avoid that creeping dampness from the ground and leaking from the roofs mostly. But overall, keeping your cob walls dry and strong is not complicated.
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