Leaking Lewmar Opening Portlights

I had attempted to carry out the repair as described above and as I explained in my earlier post, i couldn't remove enough sealant into the joint from the outside to stop the leak. Applying to much sealant in the join would also look bad and probably not stay in place.
My fix was to put the sealant in from the inside of the join. ie into the frame.
 
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Hi Jac,

Actually there's a lot of docs and advice like this on the web but they're hidden away. The website is something we'll be working on a lot this year and bringing tech advice to the fore (especially for older products) is up there towards towards the top of the priority list.

Correct, it relates to the frame joints. We use AS5500 or Simson MSR grey sealant in our current frame joints, so that's all I could recommend, although I'm sure there are many suitable alternatives out there. If you apply masking tape to the frame either side of the joint, this will help you keep the joint neat and tidy.
 
That's brilliant. All the fittings on board are Lewmar, boat built in 1998 so if you could prioritise all the products of that vintage suitable for 36 footer that would be great!! (Don't ask, don't get!!!)

Seriously though, great service from you. I feel some sealant squirting coming on this weekend.
 
jac said:
That's brilliant. All the fittings on board are Lewmar, boat built in 1998 so if you could prioritise all the products of that vintage suitable for 36 footer that would be great!! (Don't ask, don't get!!!)

Seriously though, great service from you. I feel some sealant squirting coming on this weekend.
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+1, yes ours is 1998 36footer too, Benneteau Oceanis 36 CC
 
Just as a postscript to this.

Closer inspection of the sealant revealed the sealant in 2 of the portlights had splits and the others not looking too much better.

Removing the old sealant wasn't too bad, cut with V sharp knife and brute force and it came out easily enough. Revealed with chandlery supplied sealant about 10 days ago (when had a dry 24 hour period)

Despite the biblical downpours, not a drop below from either portlight. Fixing the rest when it's properly dry!!
 
cobolt said:
Yes it's an official document, I'm the marketing manager at Lewmar. I'm glad it's of use, see Pye-End's post as to why it's better to fix in-situ :)
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Took one off last week and replaced some aged hard sealant. One to go, so decided to start loosening the screws today. However, one of the machine screws has broken at the head. Grr.

What options do I now have to remove the broken screw? Still have two others that do not want to budge, but will not touch now them till I need to.
 
Sorry to resurrect an ancient thread.
I needed to replace the horizontal seals on my old style Lewmar portlights about 4 years ago and following their instruction sheet, pumped in some external grade sealant. I can't remember what type I used though, and they have started to leak again - although only on one side, so I'm guessing UV damage.
Has anyone done this more recently, and if so what type of sealant did you use?
 
Did all mine 3 years ago using light grey CT1. Colour match is good and none have leaked yet (10 portlights fixed).
 
Bobc said:
I hope you never want to get them out. CT1 is a REALLY strong adhesive.
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The older portlights had a split frame with 2 rubber grommets sealing the join. The rubber shrinks or perishes over time and leaks water into the frame. RIp out the grommet and re-seal. I did not have to touch the seal between frame and boat.
 
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