Colin Brown
Member
My Beneteau 21.7 chain plate ( shrouds and caps) has developed a small water leak. Has anyone gone through the process of re sealing these and what involved
Leaking chain plates
- Thread starter Colin Brown
- Start date
Ian_Edwards
Well-Known Member
To bump this up.
I took a look at the 27.1, and from the photos I could see, the chain plates seem to be a deck mounted SS plate with "pad eyes" of some sort used to attach the shrouds, with both cap and lowers attached to the plate.
I can't see how the plates are fixed to the deck.
As a first guess, I'd say the deck plates need removing and rebedding down with a good sealant. I'd suggest OB1 or CT1, both are good at bonding to damp surfaces.
Photos of the chain plates from the deck and the fastening under the sidedeck would help to refine any guess.
I took a look at the 27.1, and from the photos I could see, the chain plates seem to be a deck mounted SS plate with "pad eyes" of some sort used to attach the shrouds, with both cap and lowers attached to the plate.
I can't see how the plates are fixed to the deck.
As a first guess, I'd say the deck plates need removing and rebedding down with a good sealant. I'd suggest OB1 or CT1, both are good at bonding to damp surfaces.
Photos of the chain plates from the deck and the fastening under the sidedeck would help to refine any guess.
Neeves
Well-Known Member
I did wonder why the thread had solicited no comment (well done Ian 
) - I know not a thing about the yacht. I'd emphasise Ian's post and emphasise the need for some close up pictures of the plates on the deck and the reinforcing of the chain plates within the interior as this might encourage more detailed comment.
Sorry I cannot be more useful
Jonathan
) - I know not a thing about the yacht. I'd emphasise Ian's post and emphasise the need for some close up pictures of the plates on the deck and the reinforcing of the chain plates within the interior as this might encourage more detailed comment.Sorry I cannot be more useful
Jonathan
Colin Brown
Member
Thank you for your replies, my boat is a 21.7 not a 27.1, so assume a typo
I will take some photos this weekend and repost
You mention the sealant OB1 etc rather than say Sika flex 291 any reason ?
I will take some photos this weekend and repost
You mention the sealant OB1 etc rather than say Sika flex 291 any reason ?
Tranona
Well-Known Member
Seems pretty straightforward. Remove the fitting from the deck, clean up and rebed. As to which sealant it really is not critical. Some use a flexible sealant such as butyl or polysulphide but an adhesive sealant like CT1 would be fine. If you have Sika then use that. While adhesive sealant will do the job they may make subsequent removal difficult, but as they seal well there should be no need.
Ian_Edwards
Well-Known Member
Yes a Typo, a trade mark of mine, I think.
From my limited experience, CT1 and it's close relative OB1 are better in the damp environment of a boat.
There's nothing wrong with Sikaflex, or similar, particularly if you can get everthing dry and clean, but I know that OB1 sticks very well to damp teak, especially in place it shouldn't be!
From my limited experience, CT1 and it's close relative OB1 are better in the damp environment of a boat.
There's nothing wrong with Sikaflex, or similar, particularly if you can get everthing dry and clean, but I know that OB1 sticks very well to damp teak, especially in place it shouldn't be!
Neeves
Well-Known Member
I would again agree with Ian, dry and clean but Sikaflex, or some formulations, and others rely on water (atmospheric water) to set off. But don't clean up with turps, its a marvellous cleaner but it wicks under the surface and reduces the bond.
It maybe the backing plates are too small - bigger ones are relatively easy to make.
Jonathan
It maybe the backing plates are too small - bigger ones are relatively easy to make.
Jonathan