chris French wrote in message .

No it's pretty normal I think, wood shrinks and expands quite a bit.
certainly mine does the same in the summer, esp when we have had so much
warm dry weather.

It shouldn't shrink so much as to cause gaps between the boards though.

It will if the wood was wet after such a hot and dry spell. Unlikely
though. By the time this shows up you should have had some wet
weather. It's been pouring down off and on for the last day or two
here.

You are supposed to paint the tongue (yes I know) dark so it doesn't
show when it happens. Nobody does though. They only give you about 5
mil cover don't they? That's adequate for a ship of course where the
conditions are reversed