Would you expect that to happen?

[Beau]

Just building a utility room and bought some Iroko worktop as I thought it would save time over making up my own. I've cut it to fit and left some offcuts outside for a few days and they got wet. It appears that the glue used is not very waterproof which is a bit of a worry as the worktop is going to have a sink in it. The off-cut did get soaked with no finish on but I didn't expected the joints to fall apart like this.

Am I being overly critical or would you expect some wooden kitchen worktop to stand up to a soaking?

 

[Katomi woodsmith]

Just make sure that the sink unit , taps etc are well sealed down with a good quality silicon sealant
I was going to suggest treating the work top but I don’t know what with that won’t attract the existing glue and spoil the look that you are going for

 

[John Brown]

If that's two different timber species, then I'd expect them to have different rates of shrinkage/expansion, and falling apart like that wouldn't surprise me. I had oak worktops in one house, they were as good as gold, beech in another, terrible. Get them a bit damp and the staves expanded at slightly different rates so you could feel all the joints. Currently have a mixture of granite and wide stave Osmo treated Iroko, which is great.

 

[Terry - Somerset]

The sample in the photos are very narrow - it could be the end grain absorbing the water rather than the glue failing.