leaking bow hatch window

[al1026]

Bowan hatch window ,
Last season I removed entire bowan hatch , ( top portion ) too fix leak
cleaned frame , gasket good , no cracks , not brittle
Re- Installed gasket , placed glass over on gasket ,
Only thing holding glass inplace is a a bead of silicone along the border of glass and aluminum frame ,
Leak not as bad but on heavy rains water enters getting bedding wet

Yesterday removed the hatch again ,
Removed black silicone ,
Should there be a spleen between glass and aluminum frame ,?
Only thing holding glass too aluminum frame is silicone
Am I missing something , ? Something I can get at Ace ? Glass compound , instead of silicone , a putty I can push in , then a bead of something over making it water tight

I also have one leak in fixed stainless portwhole windows , I put a bead of silicone , not much help there either ,

thanks as usual






al

 

[Scott Danforth]

most frames leak from the bedding on the hull. when you pulled the hatch off, how did you re-bed it to the hull?

no, there is no spline between the glass and frame, only the adhesive/sealant that you mention. normally that is sikaflex or 3M window bedding urethane and not silicone. however silicone works to redo it.

 

[al1026]

Morning Scott , thanks for the prompt response ,
will hit Ace and try the items U mentioned , Will check out bedding , beleive its coming from glass but anything is possible , ,

 

[Scott Danforth]

what did you use to re-bed the hatch?

 

[Grub54891]

Yeah it could be the glass, or the gasket, or where its bedded to the deck. Unless you remove and seal all of it, its going to leak.

 

[al1026]

Hey guys little follow up and another question
purchased 3m marine grade silicone sealant , clear
bonds fiberglass-glass-rubber-wood-vinyl
Almost sure its not coming from frame attached too hull , I see water coming in from glass .
Yesterday I cleaned aluminum frame of old black sealant ,
BOWMAN HATCH
Frame , gasket , window ( new gasket )
Gasket with slit held in place by sliding gasket on too frame
little sealtant on aluminum frame too hold gasket in place
QUESTION
Do I put a bead of sealant on gasket , place glass , tape and run a bead of sealant beteen glass & frame , SECURE too cure ,
Window held in place with sealant , if I dont use sealtant on gasket window will only be held inplace by a thin bead between window and frame ,
I see on utube others that dont use gasket run a thick bed of silicone , place glass, tape and run a bead of sealtnat between glass & frame ,
Gasket raises window quite a bit , otherwise on Bowman water will not run off ,

thanks

 

[QBhoy]

Hi. I spent ages trying to seal a leak on this. Kept leaking after sealant and all sorts. Amazingly what ended up resolving the issue was putting Vaseline petroleum jelly on the rubber seal. Never leaked since.