TO FOAM OR NOT TO FOAM

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lbursell
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Joined: 18 Aug 2010, 06:33
Location: Bonham, Texas

TO FOAM OR NOT TO FOAM

Post by lbursell » 21 Apr 2011, 10:03

I thought about the swim noodles for a little while, too, but second thoughts are getting to me. I'd like to hear from a couple of people who have gone that route to learn about their long-term results. I tried them for a couple of uses around the house and I don't think that they are meant to last very long. To be fair, I was using them for padding/cushioning. After a surprisingly short time, they were squished flat with very little "bounce-back" to their original shape. That makes me question the closed cell aspect of swim noodles. Plus, part of the reason you want closed cell foam is to provide resistance to gasoline spills. Anybody tried putting gas on a swim noodle ? I know what it does to styrofoam. Home-made napalm.
So far, the best advice i've seen outside of the two-part mixes is the pink or blue panels from Home Depot or Lowe's. Just cut it to size for your space and add as many layers as you need. You can also glue the layers to each other. This prevents annoying squeaking. That's the route I'm planning for now.
Just my .02's worth.
Resurrecting A 1652 MonArk
http://www.tinboats.net/forum/viewtopic ... 21&t=16589

I've grown used to doing stupid things, I just try not to have witnesses.

Xtremeboats
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BOB350RX
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Joined: 13 Apr 2011, 12:57
Location: NE,Ohio

TO FOAM OR NOT TO FOAM

Post by BOB350RX » 21 Apr 2011, 10:16

ok so i did a lil research on foam and the such i found that "great stuff" and the like products are a poly, foam much like the two part "kits" you can buy, im gonna use the pink foam board from hd or lowes and use the foam in a can stuff to fill in all the lil gaps, also the stuff is a great adhesive, use one of the old ladys kitchen towels the clean up after and youll find out... [-X anyhow thats my plan for now
THIS THING USED TO FLOAT

http://www.tinboats.net/forum/viewtopic ... 21&t=20263, my 82 mirro build

http://www.powerstream.com/wire_size.htm voltage drop, and wire size charts, pretty useful stuff!! not just for 12v either

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dyeguy1212
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TO FOAM OR NOT TO FOAM

Post by dyeguy1212 » 21 Apr 2011, 10:26

BOB350RX wrote:ok so i did a lil research on foam and the such i found that "great stuff" and the like products are a poly, foam much like the two part "kits" you can buy, im gonna use the pink foam board from hd or lowes and use the foam in a can stuff to fill in all the lil gaps, also the stuff is a great adhesive, use one of the old ladys kitchen towels the clean up after and youll find out... [-X anyhow thats my plan for now
It should only take a few minutes for this thread to fill with people saying not to use great stuff. I've never had any problems using it, but I dont leave my boats out in the rain all year.

I suspect its not entirely closed cell, but its "close enough" for most boat mods, IMO.

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BOB350RX
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Joined: 13 Apr 2011, 12:57
Location: NE,Ohio

TO FOAM OR NOT TO FOAM

Post by BOB350RX » 21 Apr 2011, 10:48

well i have had a pretty good sized chunk sumbmerge in a 5 gal bucket for 3 days now and it hasnt absorbed any water, yet i also dont leave mine out in the rain so i think ill be ok, but i could see if you left it out it eventualy breaking down
THIS THING USED TO FLOAT

http://www.tinboats.net/forum/viewtopic ... 21&t=20263, my 82 mirro build

http://www.powerstream.com/wire_size.htm voltage drop, and wire size charts, pretty useful stuff!! not just for 12v either

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BOB350RX
Posts: 482
Joined: 13 Apr 2011, 12:57
Location: NE,Ohio

TO FOAM OR NOT TO FOAM

Post by BOB350RX » 21 Apr 2011, 11:11

BOB350RX wrote:well i have had a pretty good sized chunk sumbmerge in a 5 gal bucket for 3 days now and it hasnt absorbed any water, yet i also dont leave mine out in the rain so i think ill be ok, but i could see if you left it out it eventualy breaking down
apparently i was misinformed great stuff is a 1 part poly foam, not like the kits you buy, it is not uv resistant will break down, so im not going to use it for the only floatation, in the boat, not will it be exposed to sunlight and any time so i think a lil wont kill me...hehe :shock:
THIS THING USED TO FLOAT

http://www.tinboats.net/forum/viewtopic ... 21&t=20263, my 82 mirro build

http://www.powerstream.com/wire_size.htm voltage drop, and wire size charts, pretty useful stuff!! not just for 12v either

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rgpemt
Posts: 93
Joined: 17 Apr 2011, 09:53
Location: Waltham, Maine

TO FOAM OR NOT TO FOAM

Post by rgpemt » 25 Apr 2011, 10:09

I pulled the factory foam out of my hull the other day...wow what a mess! It was saturated with water, and weighed a ton! It is all stripped out now and I am looking for solutions to put more in later when I am done with all my framing for my new decks. I have been peeking in on this thread and I guess that the "great stuff" is ok to use as long as its not exposed to sunlight, so...solution found!

jladdsmith
Posts: 19
Joined: 01 Jan 2011, 18:13
Location: Nashville, TN

TO FOAM OR NOT TO FOAM

Post by jladdsmith » 25 Apr 2011, 10:56

Here's an idea for everybody regarding foam replacement.

If your concern is for flotation only, and the situation allows (like in a bulkhead or other enclosed area), you could use inflatable bladders. My girlfriend goes through a lot of "box wine"- Bota Box specifically. The bladder inside the box is very strong. You can blow into the valve to inflate them.

A single bladder comes with 4.5 liters of wine. It is not fully 'inflated'. When you blow them up, they're much bigger than they are in the box. I'm estimating that fully inflated, they'll hold about 6.5 liters conservatively. 6.5 liters of air = 85lbs of buoyancy. Sounds like a lot, but that's what it works out to. Fully inflated, they're approximately the size of a football.

I don't know how chemical/gasoline resistant they are, but they are pretty darn strong.

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BOB350RX
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Joined: 13 Apr 2011, 12:57
Location: NE,Ohio

TO FOAM OR NOT TO FOAM

Post by BOB350RX » 25 Apr 2011, 11:19

rgpemt wrote:I pulled the factory foam out of my hull the other day...wow what a mess! It was saturated with water, and weighed a ton! It is all stripped out now and I am looking for solutions to put more in later when I am done with all my framing for my new decks. I have been peeking in on this thread and I guess that the "great stuff" is ok to use as long as its not exposed to sunlight, so...solution found!
if you have a lot to replace i would consider the two part foam stuff from us composites, i had a bunch of the pink foam board left from a build and im gonna use that with the great stuff to glue/fill in all the lil cracks, i dont know if its totaly correct way to do it but its what im gonna do, i have been fishing with no foam in it for 3-4 yrs now so what could it hurt
THIS THING USED TO FLOAT

http://www.tinboats.net/forum/viewtopic ... 21&t=20263, my 82 mirro build

http://www.powerstream.com/wire_size.htm voltage drop, and wire size charts, pretty useful stuff!! not just for 12v either

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rgpemt
Posts: 93
Joined: 17 Apr 2011, 09:53
Location: Waltham, Maine

TO FOAM OR NOT TO FOAM

Post by rgpemt » 05 May 2011, 20:42

I am scrounging pennies to finish my project and today at work one of the guys told me to look into dock billets. The big floatation peices that they put under docks...

then...he went and made a few phone calls and I will be getting some very large peices for free from some old salvage docks. they are dry throughout, but the town replaced the docks this year...I WIN!

I'll hope to have some pics soon

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