Generally, they do – but only initially, after installation or if they have been allowed to dry out. During normal operation, when the wood is warm and saturated, the seal is made naturally (and without the use of any glue) as the wood swells by as much as 2% against the bands, making the tub watertight.
This process may take anything from a day to two or three weeks after commissioning, but we guarantee that they will always seal. The joints between each stave and the base are coopered to very fine tolerances by the manufacturers in Canada.
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