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Old 27-09-2020, 02:45   #1
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Teak Caulking

Hi all while unemployed due to covid I have started refitting my yacht. I am stripping the teak deck caulking atm over 10 mm of teak left . I have ordered teak deck systems caulking. Im at the stage where should I sand the deck first then caulk & sand again to remove the caulk or just do the caulk then sand . The videos I watched they sanded the deck first but they had nice flat deck on the fly bridge of a motor boat . My deck is curved both ways .
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Old 27-09-2020, 03:33   #2
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Re: Teak Caulking

I would try to minimize sanding your teak as it is easy to remove a substantial amount.

Mask the seams with tape before applying the caulk. Masking the seams on a rough surface is tough however and the caulk can bleed under the tape making the seam somewhat less than crisp. All things are a trade off but a caution on the sanding.

Also, put the 3M bond breaker tape in the bottom of the channels. This removes the 2D stress converting it to a 1D stress. The caulk will be better at not peeling away from the sides of the channel during expansion and contraction over the diurnal cycle.
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Old 27-09-2020, 04:14   #3
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Re: Teak Caulking

Quote:
Originally Posted by LakeSuperior View Post
I would try to minimize sanding your teak as it is easy to remove a substantial amount.

Mask the seams with tape before applying the caulk. Masking the seams on a rough surface is tough however and the caulk can bleed under the tape making the seam somewhat less than crisp. All things are a trade off but a caution on the sanding.

Also, put the 3M bond breaker tape in the bottom of the channels. This removes the 2D stress converting it to a 1D stress. The caulk will be better at not peeling away from the sides of the channel during expansion and contraction over the diurnal cycle.
I was going to tape up but I watched a video on UTube where a ship wright was saying the teak deck systems caulking sands off so easy its not worth the time & trouble to tape up. I have the bond breaker tape but I have found that when the teak was put down the used epoxy glue as well as screwing it down . In many places the epoxy is almost filling the gap between the teak & only a small amount of caulk is covering the epoxy so very difficult to use the tape effectively. I have only raked the caulk out of the first 6 ft from the bow it may get better as I get into the main deck .
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