Ingress at rubrail

[DaveC426913]

Theres lots of gaps along the rubrail where the sealant has cracked. Very likely thats where water is coming in.

Should i pull the whole rubrail off to reseal it? Do i need to replace it w new? Does it require a special sealant?

[Duquette5]

I'd order the rubrail from BWY and get 'er done. I've watched this video a couple of times and it seems pretty straight forward:

[DaveC426913]

OK, pretty certain I can't do that while on-the-wet. So it's a job for the fall.

That being the case, I'll just glob some sealant into the cracks for the season and sort it out after haul-out. Which means it isn't really necessary to ensure I do a long-term fix for now.

Looks like 3M 5200 is the stuff to use.

[Herschel]

OK, pretty certain I can't do that while on-the-wet. So it's a job for the fall.

That being the case, I'll just glob some sealant into the cracks for the season and sort it out after haul-out. Which means it isn't really necessary to ensure I do a long-term fix for now.

Looks like 3M 5200 is the stuff to use.

Well, I'll throw out the notion that if you want a temporary seal you can scrape off easily when you go to replace the whole rub rail in the fall, I might just consider silicone sealant. I have had very good luck with silicone sealant around my chain plates over the years. Just a thought.

[PSNA]

The rub rail is nothing more than a cosmetic treatment to hide where the deck and hull are attached.

MacGregor used sealant and bolts to seal the two.

If water is making its way inside the boat, then the rub rail is not the problem. It is the actual sealant between the hull and deck.

[dlandersson]

Ditto

OK, pretty certain I can't do that while on-the-wet. So it's a job for the fall.

That being the case, I'll just glob some sealant into the cracks for the season and sort it out after haul-out. Which means it isn't really necessary to ensure I do a long-term fix for now.

Looks like 3M 5200 is the stuff to use.

Well, I'll throw out the notion that if you want a temporary seal you can scrape off easily when you go to replace the whole rub rail in the fall, I might just consider silicone sealant. I have had very good luck with silicone sealant around my chain plates over the years. Just a thought.

[DaveC426913]

The rub rail is nothing more than a cosmetic treatment to hide where the deck and hull are attached.

MacGregor used sealant and bolts to seal the two.

If water is making its way inside the boat, then the rub rail is not the problem. It is the actual sealant between the hull and deck.

Thanks. That is very good to know.

[ris]

Only put 5200 on something you never plan to take off. We used 3M Marine Adhesive Sealant 4000 UV, PN06580, White, 295 mL Cartridge. One tube will caulk the whole area between the top of the rub rail and the boat. It is made UV resistant. This stopped our leaks which were all small.

[Ixneigh]

Mine leaked too. I put a bead of silicon top and bottom. Disagree about the leak being from a crack in the glass. Many items on my boat were poorly bedded or sealed.

Ix

[Jimmyt]

OK, pretty certain I can't do that while on-the-wet. So it's a job for the fall.

That being the case, I'll just glob some sealant into the cracks for the season and sort it out after haul-out. Which means it isn't really necessary to ensure I do a long-term fix for now.

Looks like 3M 5200 is the stuff to use.

See ris' comment above.

3M 5200 is NOT the stuff to use for a temporary fix - especially if you are going to remove it for the permanent fix. The stuff is a bear to remove. For a one season patch, I might go with an exterior latex caulk. Silicone is better, but once it's on the surface, it is difficult to get it off. And if you can't get it all off, your permanent repair won't be as good.

[PSNA]

Mine leaked too. I put a bead of silicon top and bottom. Disagree about the leak being from a crack in the glass. Many items on my boat were poorly bedded or sealed.

Ix

I did not say there was a "crack in the glass".

It is making its way into the boat via "cracks" or missing sealant when the boat was first built.

Using a sealant on the rub rail is a band-aid and not fixing the problem.

[DaveC426913]

Using a sealant on the rub rail is a band-aid and not fixing the problem.

Exactly what I'm looking for.
I can't replace the rubrail while she's on-the-wet.

[opie]

PSNA has it right....

Definition of rub rail, "stops rubbing the rail"

Definition of deck to hull joint, "joint"

[DaveC426913]

PSNA has it right....

Definition of rub rail, "stops rubbing the rail"

Definition of deck to hull joint, "joint"

Not really sure why this bears repeating...

[DaveC426913]

I bought two toobs of Marine Sealant. That's 90 bucks I won't get back.