Andrew Gabriel wrote:

I found a piece of bathroom grade chipboard flooring which had
been wet long enough for the water to have rotted the carpet
grippers and soaked well up a thermal block wall standing on
the floor. However, much to my surprise, the chipboard remained
rock solid.

There is a piece of green chipboard in our garden which has been doing a
half-reasonable impersonation of a paving slab for the last three years

Lee

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