Forums General Discussion Bomar hatch leak

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    • #68220
      Adam
      Participant

      I have read that some have chosen to replace the bomar hatches. Mine are leaking with heavy rain and I am want to know if the plastic can be stripped, cleaned and rebedded with caulking or is this futile and just bite the bullit and replace the hatch?
      Thanks for your advice in advance.

      Adam

    • #76546
      madsailor
      Moderator

      Replacing is super easy. I used 3/8 inch acrylic and GE 794 sealant.

      I’m not being short. This is from my mobile.
      On Jan 9, 2011 6:55 PM, “Adam” wrote:

      I have read that some have chosen to replace the bomar hatches. Mine are

      leaking with heavy rain and I am want to know if the plastic can be
      stripped, cleaned and rebedded with caulking or is this futile and just bite
      the bullit and replace the hatch?

      Thanks for your advice in advance.

      Adam

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    • #76547
      Hull152_Patrick
      Spectator

      As to replacing the hatches entirely other owners have used Lewmar Ocean
      series. I plan to choose between those and New Found Metals after i see a
      nfm hatch in person.

      -pea

      s/v Deep Playa | Pearson 424 Hull #152 | http://www.DeepPlaya.com

      On Sun, Jan 9, 2011 at 3:55 PM, Adam wrote:

      I have read that some have chosen to replace the bomar hatches. Mine are
      leaking with heavy rain and I am want to know if the plastic can be
      stripped, cleaned and rebedded with caulking or is this futile and just bite
      the bullit and replace the hatch?
      Thanks for your advice in advance.

      Adam

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      Owners no more...
      Thanks Dawn and Patrick!

    • #76548
      petedd
      Participant

      They are great hatches. Just get yourself new gasket from Defender or McMaster-Carr and repaint them if needed.

      Pete

      On Jan 9, 2011, at 3:55 PM, “Adam” wrote:

      I have read that some have chosen to replace the bomar hatches. Mine are leaking with heavy rain and I am want to know if the plastic can be stripped, cleaned and rebedded with caulking or is this futile and just bite the bullit and replace the hatch?
      Thanks for your advice in advance.

      Adam

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    • #76549
      Adam
      Participant

      Thanks for the quick replies! Bob where does one get acrylic fabricated and what was the approx cost. My paint on hatches is in pretty good condition.

      As to the NFM hatch, is it a simple drop in, or does the hole have to be enlarged? Is it worth the expense ?

    • #76550
      Hull152_Patrick
      Spectator

      sources for acrylic
      http://www.onlinemetals.com/merchant.cfm?id=181&step=2&top_cat=181
      http://www.tapplastics.com/

      -p

      s/v Deep Playa | Pearson 424 Hull #152 | http://www.DeepPlaya.com

      On Sun, Jan 9, 2011 at 6:52 PM, Adam wrote:

      Thanks for the quick replies! Bob where does one get acrylic fabricated
      and what was the approx cost. My paint on hatches is in pretty good
      condition.

      As to the NFM hatch, is it a simple drop in, or does the hole have to be
      enlarged? Is it worth the expense ?

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      Owners no more...
      Thanks Dawn and Patrick!

    • #76551
      madsailor
      Moderator

      I get my plastic from local dealers. Plasticraft is one. For 3/8 inch for
      the large hatches, I think I paid like $50.

      It’s importanto get the right adhesive. I’ve tried them all, and the only
      one that works is GE stuff. Just use gloves and tape liberally. It’s sticky,
      black and messy.

      Bob

      I’m not being short. This is from my mobile.
      On Jan 9, 2011 9:53 PM, “Adam” wrote:

      Thanks for the quick replies! Bob where does one get acrylic fabricated

      and what was the approx cost. My paint on hatches is in pretty good
      condition.

      As to the NFM hatch, is it a simple drop in, or does the hole have to be

      enlarged? Is it worth the expense ?

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    • #76552
      Anonymous

      While we’re on the subject (again)…

      I have original hatches in Silverheels. They’re fine, but I’d like to find
      some (or at least one) of the little rectangular-shaped springs that are in
      the knurl knob latches, the spring that flips back the latch catch part of
      the mechanism. Anyone have any ideas for that? I can’t tell who made these
      original hatches. No brand ID visible.

      Also, what do you smart skippers use for gasket replacement material in
      these old hatches. Mine don’t leak, but they’re looking aged.

      Thanks,

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us


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    • #76555
      RichCarter
      Participant

      Tor
      the gasket material is still available. I think West Marine carries it.

      I had the hinge break on one of mine. No obvious reason why. It just broke off the frame with no warning. I got a bowmar low-profile hatch that was an almost drop-in replacement. The hatch was the same size but the hole pattern was different. I like the low-profile hatch better.

      Rich


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    • #76556
      Anonymous

      Thanks, Rich. I’ll check West Marine for that gasket material next chance I
      get. As for the latch spring, I’m not ready to replace the entire hatch
      because of it. Any idea who made the original hatches?

      Hey, does anyone in the group who has replaced their hatches still have
      their old ones? Want to sell me those little springs?

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us



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    • #76557
      madsailor
      Moderator

      Oops! Dow Corning 795 sealant!

      I’m not being short. This is from my mobile.
      On Jan 10, 2011 11:08 AM, “Silverheels” wrote:

      Thanks, Rich. I’ll check West Marine for that gasket material next chance

      I

      Quote:
      get. As for the latch spring, I’m not ready to replace the entire hatch
      because of it. Any idea who made the original hatches?

      Hey, does anyone in the group who has replaced their hatches still have
      their old ones? Want to sell me those little springs?

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us



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    • #76558
      springhorn
      Participant

      Hi, Tor,
      I replaced one of those parts on the hatch in the V-berth a few years
      ago….can’t tell you exactly when as the maintenance log is on the boat.
      Anyway, I believe I bought the replacement from Prompanette (sp?)…the
      company that bought up the Bowmar brand.

      Mary E. Springhorn
      P424 PARALLAX, Hull #61
      Sailing out of Bellingham, WA


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    • #76559
      rdugger
      Participant

      I also need a couple of those little springs..
      About a year ago Pompanette told me they don’t sell the springs separately..
      It would be great to find that someone does.

      I believe a got my gasket material from Defender…

      Don Casey in Sailmagazine March 2009 also recommends GE Silpruf SCS2000 or
      Dow 795 Silicone when replacing the acrylic.

      Nice article about Dinghy Lifting Tor

      Rick
      Eclipse #73
      On Mon, Jan 10, 2011 at 11:08 AM, Silverheels wrote:

      Quote:
      Thanks, Rich. I’ll check West Marine for that gasket material next chance I
      get. As for the latch spring, I’m not ready to replace the entire hatch
      because of it. Any idea who made the original hatches?

      Hey, does anyone in the group who has replaced their hatches still have
      their old ones? Want to sell me those little springs?

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us



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    • #76560
      Anonymous

      Thanks, Mary. If no-one in the group has those springs laying around I’ll do
      as you suggest and contact Pompa-whatever. (I have that company’s name &
      contact info somewhere.)

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us



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    • #76561
      Anonymous

      Pompanette! That’s it, but I guess they’re useless in this case. Too bad.

      Thanks, Rick. I just found out this morning the article’s in there.

      Tor



      http://www.silverheels.us



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    • #76564
      petedd
      Participant

      Just go to any plastics house with a cardboard pattern and they can cut
      it for you. No big deal. Alternately you can get a slightly oversized
      square and use a router with a patterning bit and the old plastic as the
      pattern for the new plastic using some double stick tape to hold the
      pieces together while they are routed (doing this on a router table is
      the easiest way). I have done this any number of times.

      If you want to do a precise drawing in an adobe format such as .ai or
      .eps, my local plastics house can laser cut the plastic and ship it to
      you. (Fort Collins Plastics. Ask for Chuck or Marilyn and tell them
      Pete Dubler sent you.

      Pete

      On 1/9/2011 7:52 PM, Adam wrote:

      Thanks for the quick replies! Bob where does one get acrylic fabricated and what was the approx cost. My paint on hatches is in pretty good condition.

      As to the NFM hatch, is it a simple drop in, or does the hole have to be enlarged? Is it worth the expense ?

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    • #76565
      petedd
      Participant

      I hate to say it, but you are paying too much if you use these sources.

      Pete

      On 1/9/2011 8:19 PM, Patrick “Peaboy” Walters wrote:

      sources for acrylic
      http://www.onlinemetals.com/merchant.cfm?id=181&step=2&top_cat=181
      http://www.tapplastics.com/

      -p

      s/v Deep Playa | Pearson 424 Hull #152 | http://www.DeepPlaya.com

      On Sun, Jan 9, 2011 at 6:52 PM, Adam wrote:

      Thanks for the quick replies! Bob where does one get acrylic fabricated
      and what was the approx cost. My paint on hatches is in pretty good
      condition.

      As to the NFM hatch, is it a simple drop in, or does the hole have to be
      enlarged? Is it worth the expense ?

      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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    • #76566
      petedd
      Participant

      Sikaflex 295UV with their cleaner and primer is an awesome system but
      not cheap (about $85 for the whole set), but worth it in the long run.

      I agree that the GE stuff is good, but this Sikaflex system is the best
      I have ever used.

      I wrote a complete article on hatch restoration back in 2006. If anyone
      would like a copy, I would be glad to share, but it cannot be posted.

      Pete

      On 1/10/2011 3:18 AM, Robert Fine wrote:

      I get my plastic from local dealers. Plasticraft is one. For 3/8 inch for
      the large hatches, I think I paid like $50.

      It’s importanto get the right adhesive. I’ve tried them all, and the only
      one that works is GE stuff. Just use gloves and tape liberally. It’s sticky,
      black and messy.

      Bob

      I’m not being short. This is from my mobile.
      On Jan 9, 2011 9:53 PM, “Adam” wrote:

      Thanks for the quick replies! Bob where does one get acrylic fabricated

      and what was the approx cost. My paint on hatches is in pretty good
      condition.

      As to the NFM hatch, is it a simple drop in, or does the hole have to be

      enlarged? Is it worth the expense ?

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    • #76567
      Anonymous

      I may have an inside source on these springs. My friend runs an injection molding business and he makes parts for pomponette. I will check with him and see if he can get a fist full.

      Eric Lorentzon
      EFI Sales Development Manager
      412.352.1941
      Sent from my iPhone

      On Jan 10, 2011, at 7:08 PM, Pete Dubler wrote:

      Just go to any plastics house with a cardboard pattern and they can cut it for you. No big deal. Alternately you can get a slightly oversized square and use a router with a patterning bit and the old plastic as the pattern for the new plastic using some double stick tape to hold the pieces together while they are routed (doing this on a router table is the easiest way). I have done this any number of times.

      If you want to do a precise drawing in an adobe format such as .ai or .eps, my local plastics house can laser cut the plastic and ship it to you. (Fort Collins Plastics. Ask for Chuck or Marilyn and tell them Pete Dubler sent you.

      Pete

      On 1/9/2011 7:52 PM, Adam wrote:

      Thanks for the quick replies! Bob where does one get acrylic fabricated and what was the approx cost. My paint on hatches is in pretty good condition.

      As to the NFM hatch, is it a simple drop in, or does the hole have to be enlarged? Is it worth the expense ?

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    • #76568
      petedd
      Participant

      I bought the gasket from Defender by the foot several years ago. (Bomar
      hatch). Others have found the same stuff at McMaster Carr. Their
      93085K14 which is EPDM might do the trick. Search on rubber bulb
      seal. They also offer silicone. Much, much cheaper than buying from
      Defender at current prices (Defender was cheaper years ago when I got if
      from them).

      Try http://www.pompanette.com for parts (call them regarding the spring).

      Pete

      On 1/10/2011 5:33 AM, SilverHeels wrote:

      While we’re on the subject (again)…

      I have original hatches in Silverheels. They’re fine, but I’d like to find
      some (or at least one) of the little rectangular-shaped springs that are in
      the knurl knob latches, the spring that flips back the latch catch part of
      the mechanism. Anyone have any ideas for that? I can’t tell who made these
      original hatches. No brand ID visible.

      Also, what do you smart skippers use for gasket replacement material in
      these old hatches. Mine don’t leak, but they’re looking aged.

      Thanks,

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us


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    • #76571
      Anonymous

      Thanks, Pete. I’ll check that out at McMaster.

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us



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    • #76572
      Anonymous

      Eric,

      If you’re talking about the little knurl knob spring I’m looking for, a
      fistful would be awesome! Let me know.

      Thanks,

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us



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    • #76574
      RichCarter
      Participant

      I called Bowmar about 20 years ago when I had to replace the plastic in one
      of my hatches. The guy said they use Silkaflex. I would guess they would
      have used something cheaper and easier if it worked as well…

      Rich

      Quote:

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    • #76576
      petedd
      Participant

      Thing about Sikaflex is that to get the best results one should use all
      elements of the system: cleaner, primer, and caulk.

      Pete

      On 1/10/2011 7:04 PM, Rich Carter wrote:

      Quote:
      I called Bowmar about 20 years ago when I had to replace the plastic in one
      of my hatches. The guy said they use Silkaflex. I would guess they would
      have used something cheaper and easier if it worked as well…

      Rich

      Quote:

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    • #76577
      madsailor
      Moderator

      The Dow stuff holds window in skyscrapers. I’ve never had it fail. It’s also
      only 10 bucks a tube.

      I’m not being short. This is from my mobile.
      On Jan 10, 2011 9:21 PM, “Pete Dubler” wrote:

      Thing about Sikaflex is that to get the best results one should use all
      elements of the system: cleaner, primer, and caulk.

      Pete

      On 1/10/2011 7:04 PM, Rich Carter wrote:

      I called Bowmar about 20 years ago when I had to replace the plastic in

      one

      Quote:
      Quote:
      of my hatches. The guy said they use Silkaflex. I would guess they would
      have used something cheaper and easier if it worked as well…

      Rich

      Quote:

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    • #76578
      springhorn
      Participant

      Just a clarification…I didn’t just buy the spring. I bought an entire
      unit (the assembly that dogs down the hatch). It could be that they no
      longer sell that either, but it would be worth an inquiry if that is
      what you need.

      Mary

      On 1/10/2011 9:17 AM, Rick Dugger wrote:

      Quote:
      I also need a couple of those little springs..
      About a year ago Pompanette told me they don’t sell the springs separately..
      It would be great to find that someone does.

      I believe a got my gasket material from Defender…

      Don Casey in Sailmagazine March 2009 also recommends GE Silpruf SCS2000 or
      Dow 795 Silicone when replacing the acrylic.

      Nice article about Dinghy Lifting Tor

      Rick
      Eclipse #73
      On Mon, Jan 10, 2011 at 11:08 AM, Silverheels wrote:

      Quote:
      Thanks, Rich. I’ll check West Marine for that gasket material next chance I
      get. As for the latch spring, I’m not ready to replace the entire hatch
      because of it. Any idea who made the original hatches?

      Hey, does anyone in the group who has replaced their hatches still have
      their old ones? Want to sell me those little springs?

      Tor


      SilverHeels, P-424 #17
      http://www.silverheels.us



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    • #76583
      Adam
      Participant

      Thanks for the replies! I took the hatch off the boat and will have new acrylic cut. I have heard different opinions on how long to set up the sealant ( Dow 795 or GE Ultraglaze 4000 ) for about 3 weeks before cutting away excess. Is this the best way to go, or remove the tape immediately and wipe edges like normal caulking.

      Adam

    • #76584
      madsailor
      Moderator

      Hi Adam, remove tape immediately but don’t touch for a few days.

      Bob

      I’m not being short. This is from my mobile.
      On Jan 11, 2011 11:00 PM, “Adam” wrote:

      Thanks for the replies! I took the hatch off the boat and will have new

      acrylic cut. I have heard different opinions on how long to set up the
      sealant ( Dow 795 or GE Ultraglaze 4000 ) for about 3 weeks before cutting
      away excess. Is this the best way to go, or remove the tape immediately and
      wipe edges like normal caulking.

      Adam

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    • #76622
      cstewart
      Participant

      Tor:
      I am new to the 424 family (just bought my boat last year #53 but I have refurbished the hatches on my Pearson 323 of 25 years and now have just redone the three on the 424. They are exactly the same. (I’m a fool for old Pearsons). Since my hatches are still dry after 2 years, I thought I’d share my experience. There are still Bomar parts available but they are expensive. Since the original Bomar hatches are very heavy duty cast aluminum, I chose to keep them and put in new parts. New ones aren’t made this well unless you go to stainless steel frames. The only places a hatch can leak are: 1. from the rubber seal/gasket, 2. from the acrylic coming un-bedded from the frame or cracked, and 3. from the frame mounting in the cabin-top. Unless you have the latter, which I think is very rare, I wouldn’t fix what “ain’t broke”. In my case, I removed the ring pins in the hatch tops and took them to the shop. For the hole, I made a temp scrap plywood top with a window weather seal from Lowes around the top of the hatch, then screwed it to a 1″ strip across the bottom of the hatch to keep it tight. (interestingly, it was more water tight than my hatches).
      Two of the hatches I had sand blasted and then primed with zinc-chromate and then re-painted black. I had dark bronze acrylic 1/4 inch cut to the size of the original. The original glass was 7/16″ but the added strength might be better under foot and it fits perfectly. After contacting West Marine and the engineers at BoatLife in Charleston, I went with the LifeSeal black polyurethane/”sillycone” sealer. Tape the outside of the rim with the blue or green painters tape and the new acrylic should have a paper seal covering it on both sides. Remove one side of the paper and seat that side of the acrylic onto the hatch that has been bedded with the LifeSeal. I sanded about 1/2 inch around the acrylic window to help adhesion. A note of caution here. The frames have a groove that is made to put the sealer in. Fill the groove, but also run a bead above the groove to ensure that the acrylic is properly sealed. The groove alone can leave gaps since it is so deep. After the acrylic is placed and weighted (I used a small toolbox that weighs about 12 lbs.) then you can go back with the cauk gun (LifeSeal) and run a finish bead around the edges. Just like cauk, it smoothes nicely with a wet finger. I found that the toolbox works better than C-clamps which tend to push out too much sealer. I bought one new latch-dog and used it for parts to replace the spring on one and the knob/rod on another. The new ones have a plastic hook-latch, while the old ones are cast aluminum. Do not settle for a hardware store cheaper rubber seal. I learned the hard way, It doesn’t fit properly, and it causes the latch-dogs to not do their job properly. The proper rubber seal (round) will cost about $1 a foot. All in all, I had less than $100 in each hatch refurb counting acrylic, paint, seal, rubber etc. A new hatch cost about $600 and probably isn’t as good as these. The hatches look like new and hopefully are good for another 30 years.

    • #76821
      Anonymous

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    • #76822
      Anonymous

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