Lewmar window leak

[Jim Cate]

Caleb, so glad that you have been successful! Ain't a dry boat grand?

And thanks for letting us know that it worked.

Jim

[Plangstraat]

Caleb, glad it worked for you. There's nothing better than a dry boat. Thanks for the update.

[Sani]

Originally Posted by Eric50

On these hatches, the black rubber sealant around the plastic glass is ageing and leaking / disbonding over the time as a common problem.

in addition to the o-ring areas and also the base frame bolted on the deck's side.

For the black seal around the glass, Sika is selling a kit for refit and the operation is quite easy to do.

Roughly, you have to remove the plastic glass just by pushing or pulling on it, or by removing the black sealant, either way, both are easy.

Once you have removed the glass, clean all the sealant remains that stayed on the frame, degrease the bearing edges where the glass will be put back on.

Then applied the Sika primer included in the kit, make sure it is well spread on the surfaces, it is very important for the future bonding of sealant and glass.

Then lay a bead of the black sealant all around the frame, on the horizontal bearing surface, place the plastic glass and make sure it is well centered and leveled. Once this step done, fill the gap around the plastic glass and the frame with the same black sealant, level it with appropriate profile wedge supplied in the kit or wet fingers, make sure all entrapped air in the beads of sealant are removed if any, then let it dry for 12 hours or so.

Once all the assembly is dry, use the last part of the kit, which is a black masking adhesive tape including straight and corner section, stick it all over the black sealant area, around the glass, outside, in order to have it acting as a UV screen to protect the sealant which is sensitive to UV.

Of course, prior the primer and sealant application, you'll have to use masking tape everywhere necessary to protect the frame and surrounding from any primer and sealant unwanted projection.

All include, it tooks me 1 to 2 days to perform the first 700 x 700 mm hatch, and 1 day maximum for the 2 others (excluding curing time), once I get used to it. The kit is including all necessary materials, tools for forming the wet sealant capping and instructions, enough for the said size of hatch (700 x 700 mm or roughly 27" x 27" size).

Hope this will help.

Eric50 Thank you for this. Can you please post link to the sika product you are referring to. Thanks!

[Eric50]

Hi everybody,

Sani I am looking for the reference of the kit but does not find it yet, last one I used was some years ago.

Anyway it was a box containing following products, still avaialable :

Primer :

https://www.orange-marine.com/joints...alentsika.html

or these ones :

https://www.orange-marine.com/colles...alentsika.html

https://www.ruedelamer.com/primaires-sikaflex.html

Sealant :

https://www.orange-marine.com/joints...95-uvsika.html

Unfortunately I could not find the adhesive UV protection tape that was in the kit...I guess that any adhesive tape with good strength and black color will do the job, having about 1 inch width approximately.

Sika marine application website :

https://industry.sika.com/en/home/ma...andyachts.html

Sika marine glass bonding web page with manuals to download :

https://industry.sika.com/en/home/ma...s-bonding.html

Hope this will help.

Best regards.
Eric