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Old 09-13-2013, 11:14 PM   #51
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Re: The Good Ship Anne Marie

Nat, Never mind. I don't want to invest the time.
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Old 09-14-2013, 12:21 AM   #52
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Re: The Good Ship Anne Marie

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Originally Posted by ol trunt
Nat, Never mind. I don't want to invest the time.

Neither do I. I'm glad we agree.

Nat
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Old 09-14-2013, 01:10 AM   #53
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Re: The Good Ship Anne Marie

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Originally Posted by nat_ster
I just want to add that great stuff is a open cell, half pound density foam with a R value of about 4 per inch. It is not water proof, and will absorb water in high moisture area's.

If it had been 2 pound, closed cell, then there would be no way water could pass through it, but would still eventually leak passed it.

Open cell foams are good, but not a real vapor barrier, and only about half the R value. Closed cell foams are a true "Seal". They are more effective as a vapor barrier than the standard 6 mil Polly we use in residential construction.

Nat
I'd love to somehow get to the bottom of this. There seems to be no consensus among people online, and though DOW claims it's closed cell it's still unclear. I think if I were to do it again, I'd just spray foam the walls completely, instead of my budget solution. I'll see how it does this winter, and maybe renovations will be in order.
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Old 09-14-2013, 09:20 AM   #54
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Re: The Good Ship Anne Marie

It will do great. Any Styrofoam is better than fiberglass batts, or blow in garbage.

I lived in my bus shed for 2 months, with only 1.5 styro on the walls at -30 C. That 1.5 inches did a far better job than the other shed with 6 inch thick fiberglass batts.

Quote:
Originally Posted by somjuan
Quote:
Originally Posted by nat_ster
I just want to add that great stuff is a open cell, half pound density foam with a R value of about 4 per inch. It is not water proof, and will absorb water in high moisture area's.

If it had been 2 pound, closed cell, then there would be no way water could pass through it, but would still eventually leak passed it.

Open cell foams are good, but not a real vapor barrier, and only about half the R value. Closed cell foams are a true "Seal". They are more effective as a vapor barrier than the standard 6 mil Polly we use in residential construction.

Nat
I'd love to somehow get to the bottom of this. There seems to be no consensus among people online, and though DOW claims it's closed cell it's still unclear. I think if I were to do it again, I'd just spray foam the walls completely, instead of my budget solution. I'll see how it does this winter, and maybe renovations will be in order.
That's the problem. People on the internet have no clue. All they know is what they read, and want to pass on.

On the other hand, I work with this stuff daily. I've also had the opportunity to demo and renovate structures where open and closed cell were both used in high humidity locations.

The best was a floating dock. Someone had used the blue Styrofoam sheets under it for floatation. The blue sheets held up fine, took on no water. The great stuff they used around it completely saturated, and fell apart.

Nat
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Old 09-14-2013, 11:05 AM   #55
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Re: The Good Ship Anne Marie

Somjuan, never mind what the mfg says---the world really is flat
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Old 09-14-2013, 07:05 PM   #56
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Re: The Good Ship Anne Marie

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Somjuan, never mind what the mfg says---the world really is flat
That's good advise Ol Trunt. Manufactures want to sell you a product. Trades People who work with the stuff, over a period of time, have the ability to offer real reviews.

The only part of the great stuff expanding foam that's closed cell, is the outer "skin". Once that outer skin is breached by water, the core of the foam is a open cell sponge.

There is also a incredible amount of info on the net backing my claims. A simple Google search will offer much good reading.

I'm done with this topic in this build thread. If any member wishes to continue to discuss spray foam, please start a thread, and I will be happy to join the discussion.

Nat
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Old 09-16-2013, 06:19 AM   #57
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Re: The Good Ship Anne Marie

I like how the deck turned out, great job
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Old 09-22-2013, 09:57 PM   #58
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Re: The Good Ship Anne Marie

Thanks bansil, we're pretty pleased with it too. Some rain has come and gone, and it looks like we're in the clear.

We've subdivided our interior into separate units, and we've finished roughing out two of them. Both are transforming units, which can take one shape or another. At the front of our port side, right behind the driver's seat, we have a desk with a drop leaf.



With the leaf down, the desk is only 15" deep, and quite out of the way. Open, we have a full desk for whatever use. It will also house much of our electrical, including the house battery bank, solar charge controller, and inverter. It's right on top of the starting battery bank, and I'll probably join the two with a large switch at some point.



At the front of the starboard side, about a foot and a half from the stairwell, we made our bed. When not in use, our bed serves as a bench for seating.



Our bed will be stored inside this bench. We'll be using a queen sized futon mattress, folded in half lengthwise.



Since we don't have any side doors, I wasn't happy with the idea of blocking off the back door for a bedroom, so a normal mattress wasn't going to work. But I also don't want to be pulling sheets on and off of my bed everyday either. This is the happy medium we found. When we want to use the bed, we just open up the bench and fold it out. It's a ten second process, and the bed is made and ready. In the daytime, it's out of the way, and there is a clear path down the length of the bus.



This construction has been more difficult than we'd expected. Nothing is really square or level, and it's hard to make things that are securely attached and also fit well. We're getting better at it, and the weird little nuances can be hidden when we start to finish the interior.



Our next project is the countertop space which houses all of our appliances. This part is going to be really interesting...
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Old 09-26-2013, 12:57 PM   #59
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Re: The Good Ship Anne Marie

The bus is really coming along guys! Looks great! I'm willing the itch to crash in it is getting worse every day!
I really like your desk, cool way to use and save space. Keep the pictures coming!
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Old 09-26-2013, 03:11 PM   #60
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Re: The Good Ship Anne Marie

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Originally Posted by inkblots84
The bus is really coming along guys! Looks great! I'm willing the itch to crash in it is getting worse every day!
I really like your desk, cool way to use and save space. Keep the pictures coming!
The lack of a woodstove is really the only thing keeping us from spending nights in there. We can do without power for the moment, but the nights are getting pretty cool.

We have our cabinet tentatively framed out. Nothing glued or screwed yet, but we made the cutouts in the countertop, and positioned things about where they'll be going to get a sense of things.

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