Hull liner coming off/loose... remove and paint? - SailNet Community
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post #1 of 12 Old 04-09-2018 Thread Starter
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Hull liner coming off/loose... remove and paint?

The inner hull liner of my NA23/Spirit23 is barely hanging on... the black foam and adhesive disintegrating. Just touching it releases more of the crumbly, black powder.

It is also badly stained... doesn't look all that good.

I'm considering removing the liner entirely and painting where the liner was.

I've read a variety of comments elsewhere online: condensation issues, no condensation issues, painting with cork-infused/microbeads paint, mildew-cide paint, messy project.

Here are the conditions my boat will be in:

In a marina slip, cold waters (50-55 degrees), mild temps year round
I will be running a small heater in the cabin when moored in the marina
There is no headliner and I have not seen/experienced any condensation so far while on land
Oregon coast climate is cool year round, high relative humidity (hey... it's a cool humid!!)
Summer temps are around 65 degree highs/55 degree lows.
Winter temps are 50 degree highs/40 degree lows.

Since the temperature changes are relatively small on a daily basis (10-15 degrees max... often less than 10 degrees), wouldn't that reduce/minimize the amount/risk of condensation?

The liner is just on the sides of the hull. It is not on the ceiling.. just on the sides of the hull from the berths to about where the rubrail is. There has been no condensation on the ceiling where there is no liner.

Many thanks for your suggestions.

Hal Nash
Waldport OR
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post #2 of 12 Old 04-09-2018
1979 Morgan Out Island 41
 
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Re: Hull liner coming off/loose... remove and paint?

I tore out the liner on my Morgan OI41. It was wet and moldy. I've fixed the leaks and have been fairing and repainting everything with Interlux Brightsides (after primer). I was in a rush to get the aft cabin done as I'm living on the boat and needed a sleeping area so it's not as detailed as the parts I'm working on now. Here's some before and after photos


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Re: Hull liner coming off/loose... remove and paint?

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I tore out the liner on my Morgan OI41. It was wet and moldy. I've fixed the leaks and have been fairing and repainting everything with Interlux Brightsides (after primer). I was in a rush to get the aft cabin done as I'm living on the boat and needed a sleeping area so it's not as detailed as the parts I'm working on now. Here's some before and after photos
So...are you saying that after removal of the liner, you have not experienced condensation where the liner was?
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post #4 of 12 Old 04-10-2018
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Re: Hull liner coming off/loose... remove and paint?

I haven't. The boat is located in north eastern florida.


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Re: Hull liner coming off/loose... remove and paint?

Anymore owners have experience removing their hull liner and painting the hull rather than replacing the liner?
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Re: Hull liner coming off/loose... remove and paint?

I think someone on the North American Yachts forum did it in one of their build threads.
In mine the inner hull is just carpeted. It can be taken off. The glue holding it to the side would be a pita to get clean.
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Re: Hull liner coming off/loose... remove and paint?

I have an older boat with foam backed head and hull liner. I have not had an issue with condensation, but I am a day sailer /overnighter, not a live aboard. I suspect a live aboard would have higher humidity in the cabin. Ventilation is one of the keys, making sure the boat is not leaking is another. After removing the foam backed liner, the cabin top and sides were covered with foam residue. I had no luck removing the old foam, so painting was out. I found some products at Lowes, a textures fiberglass sheet for headliner, and a vinyl sheet for the cabin sides. I have not seen any evidence of condensation. I attached a picture of the headliner
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post #8 of 12 Old 04-10-2018
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Re: Hull liner coming off/loose... remove and paint?

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Originally Posted by blobaugh View Post
I think someone on the North American Yachts forum did it in one of their build threads.
In mine the inner hull is just carpeted. It can be taken off. The glue holding it to the side would be a pita to get clean.
On mine I found the glue came off rather easily with a wire wheel mounted on a drill. I'm sure the mileage may vary depending on the glue used.


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Re: Hull liner coming off/loose... remove and paint?

I tore the headliner out of my companionway hatch (it was moldy and falling apart) ... cleaned off the glue, faired and painted it. Looks great now.

The worst part of that job was getting the glue off. Took me about 4 hours with a heat gun and a scraper. It's a 1979 Tartan 37. I don't know what other manufacturers use for glue, but this stuff was a pain to get off.
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post #10 of 12 Old 04-14-2018 Thread Starter
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Re: Hull liner coming off/loose... remove and paint?

Great replies fellows... many thanks for sharing your experiences.

I think I will peel back some of the carpet lining the hull and check out the glue/adhesive used and see how much of a PITA it will be to get off.

Again, many thanks!!
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