Jump to content
Sailor Jerry

Window sealants

Recommended Posts

Just bought a 30 year old family cruising yacht, very exciting for us. Few jobs to get sorted before we get out there. Windows have small leaks and have stainless surrounds, was going to remove surrounds only and put new sealant under. What is best sealant for this job?

Cheers

Share this post


Link to post
Share on other sites

Congrats on the new boat! What is she?

Windows, the best sealant IMO is quilosa ms35 from the glue guru.

What are the windows made from? Generally the best method is to completely remove a leaky window, clean up and re seal. Note that mostly the old method of fastening windows (through bolts) is no longer needed - the adhesive is strong enough by itself. Old windows often leaked through the bolt holes after a while and a bit of movement, so leaving them out is good!

Welcome aboard!

Share this post


Link to post
Share on other sites

I haven't glued my windows in yet but I have been assembling bits of the boat using some of that MS35 which in will be using to hold the windows in.

 

I am sort of relying on the MS35 to stop sh*t flying around inside the boat.... literally, I used it to stick all the fittings into my black tank.

 

I will agree with IT, if you can pop the window out and re goop them in it would be best but your plan is a good second best. Niggly window leaks do seem to generate more annoyance than many bigger things.

Share this post


Link to post
Share on other sites

Having done a whole lot of windows in the last year I can say from my perspective that prep is important - the existing frame area needs to be cleaned up really well which is a messy job if the previous sealant is silicone based which I assume it is . Use a dam rubber and get a good bed of sealant - I did away with screws which had been in the windows previously and as mentioned above started to cause a few leaks. As long as the bed of sealant is sufficient it will hold the window fine without the need for screws.

Ideally it is a 2 person job depending on the size of the window - having someone to hold it while you guide the window into place is preferable .

Good luck

Share this post


Link to post
Share on other sites
Guest 000

From experience, if the windows are acrylic then you need to calculate the amount of expansion/ contraction for their length and height and then ensure that the sealant bead is sufficient to allow for this without shearing.

Share this post


Link to post
Share on other sites

Your windows stuck on the outside or rebated Paul?

They are rebated which allows for a good solid bed of sealant . Previously when they were screwed as well - the pressure from the screws had squeezed the sealant bed too thin . Being acrylic windows it also caused pressure points from expansion and contraction which shortened the lifespan of the windows

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...