Yes, Ken is correct, the skylight is directly bonded to the flat surface of the 
deck.  I have removed it as well as all of the original adhesive used to attach 
it.   I will be rebonding it next week with Sika 295iUV.   I'm hoping that will 
take care of a leak that has found its way in between the deck and the overhead 
liner.

Mike

From: Ken Heaton [mailto:[email protected]]
Sent: Friday, August 23, 2013 6:07 AM
To: Dennis C.; cnc-list
Subject: Re: Stus-List C&C 30 mk II skylight

Yes, but in this case I think the skylight lens in question is bonded to the 
flat surface of the deck.  If it is like the skylight on a 37+ there is no 
depression the lens fits into, no frame, the lexan panel just lays there so the 
choice of adhesive / sealant is very important.  As the boat flexes under sail 
there are significant stresses on this panel so the band has to be strong.

Ken H.

On 18 August 2013 23:25, Dennis C. 
<[email protected]<mailto:[email protected]>> wrote:
FWIW, I've successfully bedded ports in J30's and hatch lenses in both Bomar 
and Lewmar hatches with black LifeSeal by Life Products.  It's a 
silicone/polyurethane blend.

Dennis C.
Touche' 35-1 #83
mandeville, LA
________________________________
From: Sébastien Lemieux <[email protected]<mailto:[email protected]>>
To: [email protected]<mailto:[email protected]>
Sent: Sunday, August 18, 2013 8:36 PM
Subject: Stus-List C&C 30 mk II skylight

I replaced mine with a Lexan panel too last year.  I used black 4200 as the 
adhesive, which proved to be a bad decision on my part as it seems that 4200 
adheres poorly to lexan (let me know how it turns out for you Pete!).  This 
spring, I noticed the panel was half loose and that water was getting in at an 
alarming rate.  I removed the panel and cleaned up the 4200.

I have been recommended a silicone-based sealant specially made to bed lexan 
windows (sika 295 uv), but somehow managed to skip the parts of the 
instructions where the use of a primer was mentioned.  Last month, I noticed 
the panel is loose again with water finding its way in again.

The only upside I see to my hard-n-slow learning approach is that I'm giving 
myself so many opportunities to work on my goo-handling abilities!

Sébastien Lemieux
Merlot X - C&C 30 mk2 1987
Lake Champlain


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