Bedding in a new windshield - what to use?

Well my Sika 206, SIkaflex 292 and Sika 226 cleaner are on their way here. I had to settle for the white 292 as I couldn't locate the black here. Based on what research I've done regarding the 206 primer I'll need to mask off the rabbetted area where the windshield glass will rest. My supplier told me that once it goes on it doesn't come off. Should be interesting, I'll keep you posted.

MIA

 

You could paint it, once fully cured. But make a sample test (prepare a sample while bedding), and use a "flexible" paint.

Regards
Richard

 

I've thought about that Apex. But maybe there is an advantage to using the black primer under the white sealant. I'm going to do a small test first but the way I see things I'll know that my bed of 292 is perfect (and it needs to be) if I cannot see the black primer after I put the glass into place. I'll use the 206 primer in the rabbetted glass shelf and any sealant that squeezes out of the joint should (I hope) be easily removed from unprimered glass.

Once the glass is in place I'm planning on making up some trim to cover the glass frame joint, painting the visible part to match the frame and then just setting the trim in a thin bed of 292 over the glass. If I work carefully I don't think that I'll need to make any holes in the trim for fasteners as the 292 will hold everything together.

MIA

 

Just an update to this thread and one final question for Apex1 and CDK.

I received my Sikaflex 292 and Sika 206 the other day. I placed a call to a Sika rep here in the US and they were very helpful. I had originally planned to install my windshield framing using thickened epoxy resin. After I talked it over with the Sika rep I decided to change course a bit and install the framing with 206 primer and 292 Sikaflex. My thinking was that the deck might flex a bit in rough weather and the Sikaflex 292 would certainly tolerate more movement than epoxy. Since the frame itself was quite robust we determined that it would be acceptable to bond the frame to the deck without using fasteners. So I now have what I always wanted, a windshield frame with no holes in it completely encased in epoxy, fiberglass, Interlux Perfection and Sikaflex.

Now for the final question. We had discussed using neoprene (1/16") as a spacer to get a consistent layer of 292 between the windshield glass and the frame. After using the 206 today I believe the correct procedure would be to coat the frame with 206. Immediately place the neoprene spacers onto the 206 primer (before it dries) and then proceed with placing the bed of 292 and then the glass. Is this the correct procedure? Or should I wait and place the neoprene into the bed of Sikaflex 292 just before I drop the glass in?

Thanks,

MIA

 

Just an update to this thread and one final question for Apex1 and CDK and baeckmo.

I received my Sikaflex 292 and Sika 206 the other day. I placed a call to a Sika rep here in the US and they were very helpful. I had originally planned to install my windshield framing using thickened epoxy resin. After I talked it over with the Sika rep I decided to change course a bit and install the framing with 206 primer and 292 Sikaflex. My thinking was that the deck might flex a bit in rough weather and the Sikaflex 292 would certainly tolerate more movement than epoxy. Since the frame itself was quite robust we determined that it would be acceptable to bond the frame to the deck without using fasteners. So I now have what I always wanted, a windshield frame with no holes in it completely encased in epoxy, fiberglass, Interlux Perfection and now fastened with Sikaflex.

Now for the final question. We had discussed using neoprene (1/16") as a spacer to get a consistent layer of 292 between the windshield glass and the frame. After using the 206 today I believe the correct procedure would be to coat the frame with 206. Immediately place the neoprene spacers onto the 206 primer (before it dries) and then proceed with placing the bed of 292 and then the glass. Is this the correct procedure? Or should I wait and place the neoprene into the bed of Sikaflex 292 just before I drop the glass in?

Thanks,

MIA

 

I jumped in over my head before I knew I jumped

I have found this discussion to be informative and at some point useful. I bought a 61 34' wood cruiser. I am going to have to replace the house planks under the windows. The pictures that were provided are where I'm going to be in the next couple of years. The haul is sound, but needs some work before I do to much with her up here. But she made it though Lynn Channel gusting to 45. I hope I'm not breaking blog norms with my attempt at introduction.

I hope that I can ask intelligent questions and you'll reply to the really stupid ones. Thanks, K

 

Sika has a marine products brochure with all application details, they should have given you one.

In the Dutch edition I looked it up for you: they say apply the 206, then wait at least 30 minutes before proceeding with the bedding compound.
To ensure a layer thickness of at least 5 mm or .2" spacers of rubber or cork can be pressed in the compound.
They use 296 instead of 292 for tempered glass panes. It is slightly more elastic (45 Shore A vs. 55 for 292) and cures slower, but is not available in a cartridge.
It has the shape of a sausage so you probably need a special applicator gun for it.

 

Thanks CDK! I appreciate the advise. MIA

 

I concur, (just to stay not quiet)

spacers should be placed in the bedding compound, not in the primer!

Richard