Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 26-03-2012, 15:06   #1
Registered User

Join Date: Sep 2010
Posts: 793
Thoughts on Leaking Hatch ?

I've got a forward hatch that's leaking pretty much any time it rains. It's made by Man Ship and is a 24"x24" smoked glass hatch with stainless frame. I've looked it over and can't spot anything obvious. With rain coming straight down, it would appear there are two possible entry points. One is the seal where the glass fits into the hatch frame, and the other is the bedding where the frame attaches to the deck.

I know there is little one can do to help diagnose such a problem over the internet, but I'd welcome any thoughts on two fronts:

1) Are there any common failure points that I should focus on?

2) Are there any good techniques for locating/tracing the entry point?

Thanks,

Peter
__________________

__________________
twistedtree is offline   Reply With Quote
Old 26-03-2012, 15:15   #2
Registered User
 
neilpride's Avatar

Join Date: Jul 2009
Location: in the world
Boat: csy 44 tall rig.
Posts: 3,099
Re: Thoughts on leaking hatch?

You right, frame bedding with the deck and lexan caulk with the frame, i sugest to pull the whole hatch, clean the old compound from deck and frame, you can use butyl tape for the deck and frame and caulking compound for the lexan , be sure the caulk for the lexan have Uv protection and be sure all is neat clean , no traces of old caulking, dont press the lexan to hard in the frame and dont tight screws if there is any to tight in the lexan.. Good luck..
__________________

__________________
neilpride is offline   Reply With Quote
Old 26-03-2012, 15:40   #3
Registered User
 
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,101
Send a message via Skype™ to sy_gilana
Re: Thoughts on leaking hatch?

Div ide and conquer!
Tape the seams where the lexan fits into the frame, wait for rain, leaks...its not the lexan, no leaks, it is.

Get a plastic bag, ziplock type, cut into strips of say 2" x 4" lay them over the sealing edge, close hatch, then pull them out. Those that come out easily could indicate a warped frame.

Finally tape the seams to the deck, covering the screw holes, wait for rain...

and really finally, put a bucket under it
__________________
Tight sheets to ya.
http://gilana.org
sy_gilana is offline   Reply With Quote
Old 26-03-2012, 15:52   #4
Registered User

Join Date: Sep 2010
Posts: 793
Re: Thoughts on leaking hatch?

Quote:
Originally Posted by neilpride View Post
you can use butyl tape for the deck and frame and caulking compound for the lexan
Thanks. Just curious - why butyl tape and not 4200 or equivalent?

There are two "frames". The bottom one that attaches to the deck, and the top frame that houses the glass and is hinged to the bottom frame.

The glass appears to set into the top frame with a seal, not calking, but I can't say for sure.
__________________
twistedtree is offline   Reply With Quote
Old 26-03-2012, 15:54   #5
Registered User

Join Date: Sep 2010
Posts: 793
Re: Thoughts on leaking hatch?

Quote:
Originally Posted by sy_gilana View Post
Div ide and conquer!
Tape the seams where the lexan fits into the frame, wait for rain, leaks...its not the lexan, no leaks, it is.

Get a plastic bag, ziplock type, cut into strips of say 2" x 4" lay them over the sealing edge, close hatch, then pull them out. Those that come out easily could indicate a warped frame.

Finally tape the seams to the deck, covering the screw holes, wait for rain...

and really finally, put a bucket under it
Thanks - that's just the sort of technique I was looking for.
__________________
twistedtree is offline   Reply With Quote
Old 26-03-2012, 16:37   #6
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: Thoughts on leaking hatch?

I would start with the seal. One man with the hose (outside! ;-) one with a watchful eye inside. Any water thru the seal tends to drop from the inner rim of the hatch. If in doubt, replace the seal.

Water coming from under the hatch tends to mess the interior wood or whatever you have there as a liner round the offending hatch. Then you will have to gently remove the hatch, clean the surfaces and re-attach the hatch onto new sealant. If so, do NOT over-tighten the holding bolts/screws - or else you will bend the hatch frame and it will leak again.

b.
__________________
barnakiel is offline   Reply With Quote
Old 26-03-2012, 16:53   #7
Registered User
 
ShipShape's Avatar

Join Date: May 2010
Posts: 267
Re: Thoughts on Leaking Hatch?

Thank Bill Seifert for this idea: tape a thread across opposite corners so they cross in the middle of the hatch in an X. If they don't touch then your hatch (or its mounting surface) is warped. You may have to switch which thread is on top to find out. If it is warped then use the largest possible really squishy foam for the gasket.

One of my hatch leaks was through the itty bitty gap where the two gasket ends joined.

Thanks for your idea twistedtree ... seems the more I learn about boats the more practice I get going "duhhhhh"

Butyl tape rocks - for more info see mainsail's tutorial Re-Bedding Deck Hardware Photo Gallery by Compass Marine at pbase.com
__________________
ShipShape is offline   Reply With Quote
Old 26-03-2012, 17:00   #8
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,363
Re: Thoughts on Leaking Hatch?

Yeah, just remove it and reseal the lexan and rebed it when you screw it back on. Look for rot in the surrounding deck core once it's off... It's a pretty big job... a lot of scraping etc to clean things up good.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 28-03-2012, 21:29   #9
Registered User

Join Date: Mar 2012
Location: Boat:Old Saybrook, Connecticut - Me: Danbury CT
Boat: 1973 Contest 33
Posts: 23
The hatch god

Tony is the expert and he is willing to share his info. There is much info on which sealants to use and how to prep on his site. His hatch repair services seem expensive as do his material prices but his information is free and free is for me. I just pulled my hatch and am in the middle of a rebuild. Good luck.

Tony's Blog | Select Plastics, LLC - Connecticut's Best Custom Fabricated Plastics and Marine Hatch Repair
__________________

__________________
Captmorpheus is offline   Reply With Quote
Reply

Tags
hatch, leaks

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Shoestring Sailors (Cruising on $500 per month - part II) David_Old_Jersey General Sailing Forum 1355 13-11-2017 17:32
RFI on VHF Radio tybee22 Marine Electronics 13 29-03-2012 11:17
advice/oppinion on hardware install on a steel hull. xymotic Construction, Maintenance & Refit 0 29-03-2012 10:46
Crossing Bars on NSW's North coast 44'cruisingcat Pacific & South China Sea 11 29-03-2012 01:12



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:26.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.