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Old 02-08-2021, 16:58   #1
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PVC Trim Board for lazarettes

I was wondering if PVC Trim Board from Lowes / Home Depot like this stuff will


1. Be able to be glassed with fiberglass and epoxy from Total Boat
2. When glassed in with fiberglass able to be sat on, stood on etc.

I was told my a neighbor of mine that this would make my lazarettes much lighter and stronger. Considering they are now rotted wood and literally falling apart, it is time to replace them with something that will last decades.


Thank you
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Old 02-08-2021, 18:58   #2
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Re: PVC Trim Board for lazarettes

With the dimensions given, it would not seem to be overly strong for sitting or walking on. It looks to be a far cry from Starboard https://www.boatoutfitters.com/mater...BoC6kYQAvD_BwE . Using the PVC trim board for creating dividers in a lazarette might work.
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Old 02-08-2021, 19:42   #3
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Re: PVC Trim Board for lazarettes

There are a lot of issues with "PVC Trim board." Yes it is cheap, but you get what you pay for.

NOTHING sticks well to PVC, epoxy, polyester, NOTHING.

If you want to build something that will be stiff and strong "for decades" use something like divinycell that is made specifically for this purpose. It is purpose designed for coring fiberglass structures. Is waterproof and bonds well to resin. It makes a stiff and strong structure--assuming you know what you are doing with fiberglass.

If you DON'T know what you are doing, the kind of materials you use will not matter.
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Old 03-08-2021, 04:54   #4
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Re: PVC Trim Board for lazarettes

Thanks you.
I will not be purchasing it.
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Old 03-08-2021, 05:18   #5
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Re: PVC Trim Board for lazarettes

I think that I would be willing to work with the stuff in your application, although I agree that there are better, and more expensive, materials on the market. At 3/8", you would not expect rigidity, so I would attach some wooden or aluminum strips to the underside with screws. If I wanted to cover it with fiberglass, (why?) I'd sand it with coarse paper first for a better grip. Alternatively, I'd cover the top surface with non-skid paint or KiwiGrip.
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Old 03-08-2021, 05:25   #6
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Re: PVC Trim Board for lazarettes

What are you calling a lazarette? I’ve always know it as the compartment aft of the cockpit.

Are you contemplating making locker lids for the lazarette? If so, pvc board is just wrong. Too flexible, not able to bond well to the resin, etc…..
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Old 03-08-2021, 05:47   #7
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Re: PVC Trim Board for lazarettes

Quote:
Originally Posted by BillKny View Post
... NOTHING sticks well to PVC, epoxy, polyester, NOTHING....

Not true. I'm guessing you are not speaking from experience.I think this, from West systems, gives a more balanced view and actual data.

https://www.epoxyworks.com/index.php...c-deck-boards/

It is very different from Starboard, which is very difficult to bond.

Paint, epoxies, and sealants stick just fine. I've used cellular PVC on homes and on boats. You can find many forum posts by people that have used Azek successfully, for specific applications. That said, it would not be my first choice for this project.
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Old 03-08-2021, 06:45   #8
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Re: PVC Trim Board for lazarettes

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Originally Posted by thinwater View Post
Not true. I'm guessing you are not speaking from experience.I think this, from West systems, gives a more balanced view and actual data.


For cosmetic use, paints and epoxy sticks just fine to cellular PVC. And with proper prep work, epoxy sticks well to conventional PVC pipe too. Just try it BillKny and you'll see that the plastic will be destroyed before the bond breaks.

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Old 03-08-2021, 06:59   #9
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Re: PVC Trim Board for lazarettes

Quote:
Originally Posted by sailinglife View Post
I was wondering if PVC Trim Board from Lowes / Home Depot like this stuff will


1. Be able to be glassed with fiberglass and epoxy from Total Boat
2. When glassed in with fiberglass able to be sat on, stood on etc.

I was told my a neighbor of mine that this would make my lazarettes much lighter and stronger. Considering they are now rotted wood and literally falling apart, it is time to replace them with something that will last decades.


Thank you

Not sure if you are making hatches, but this is one we made out of HDU and Coosa sheets. Very strong, firm and will not rot.
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Old 03-08-2021, 07:01   #10
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Re: PVC Trim Board for lazarettes

Quote:
Originally Posted by BillKny View Post
...If you want to build something that will be stiff and strong "for decades" use something like divinycell that is made specifically for this purpose. It is purpose designed for coring fiberglass structures. Is waterproof and bonds well to resin. It makes a stiff and strong structure--assuming you know what you are doing with fiberglass....
And Divinycell is made from, wait for it, PVC

Actually, there are lots of Divinycell materials, but the commonly used Divinycell H is a PVC foam. Not saying it is the same as trim boards, but if nothing sticks to PVC....
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Old 03-08-2021, 07:09   #11
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Re: PVC Trim Board for lazarettes

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Originally Posted by Dsanduril View Post
And Divinycell is made from, wait for it, PVC

Actually, there are lots of Divinycell materials, but the commonly used Divinycell H is a PVC foam. Not saying it is the same as trim boards, but if nothing sticks to PVC....

If cost is an issue, there are other structural PVC sheets available vs. Divinycell. (3/8" $68 vs. $168)
Will agree, vinyl and epoxy resins will stick to these sheets.
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Old 03-08-2021, 10:34   #12
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Re: PVC Trim Board for lazarettes

I use the 1/2” PVC trim board for non-structural stuff all over my boat. It’s fire retardant, waterproof, rot proof, bug proof, paintable. For a good epoxy bond, sand with 60 grit. For the ultimate, flame treat it and epoxy while it’s hot. It is more flexible than marine ply, and will dent. 1/2” should be OK for lazarette bottoms and sides. Double or triple it for a seat. Use epoxy to bond as above. Screws will pull out more easily than in Marine ply, so use through-bolts and fender washers. Cheers.
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Old 03-08-2021, 11:00   #13
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Re: PVC Trim Board for lazarettes

Quote:
Originally Posted by Sailmonkey View Post
What are you calling a lazarette? I’ve always know it as the compartment aft of the cockpit.

Are you contemplating making locker lids for the lazarette? If so, pvc board is just wrong. Too flexible, not able to bond well to the resin, etc…..


“a small compartment below the deck in the after end of a vessel, used for stores”

Seems like any compartment around the cockpit would fit the definition.
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