springy deck

[adriano meis]

hello everybody. opening season and new works. 

TIKI 26. jumping on the deck in the stern part, I've noticed the plywood "soft": something like springy when I push my weight on it. 

even above the plexiglass of the window it sounds like flexible. I'm able to fold the plexiglass with my weight. 

on the other hull everything is as rigid as usual

?????

do I worry?

[paul anderson]

Something is not right Adriano,maybe water has got into the ply,or you need to check the deck stringers are still all glued and secured.AS this area supports the aft beam it may be worth a proper check.

[kim whitmyre]

6mm plywood is not very stiff; my cabin soles at the footwells flexed enough to crack the wood stiffeners under it. Of course this was due to large people landing on it after jumping through the hatch! Fixed the problem by bolting in aluminum angle stock. No fiberglass applied to this sole.

My decks flex a bit, but since they are fiberglassed, it has not been a problem. As long as there is no sign of fracturing on the ply skin, I would not worry about it. As Paul says, an inspection for water intrusion would be a good idea.

[adriano meis]

actualy somebody landed on my deck not exactly in a proper way.

anyway I do not recognize  sign of fracturing on the ply skin

As Paul says, an inspection for water intrusion would be a good idea.  

how?

what are deck stringers?  

[paul anderson]

Deck stringers are the timber that supports the deck,glued underneath the deck.Check for fine cracks in your paintwork,usually the crack will have a dark appearance.Or drill a small hole in suspect area and inspect the waste material coming out when drilling.