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#339085 - 06/13/13 12:00 PM big foam blocks
ScottBroughton Offline


Registered: 05/14/11
Posts: 12
Loc: Lufkin, TX
Where is a good place to get foam blocks to float a dock? I am looking for 12" x 48" x 48" or 96" blocks.
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#339108 - 06/13/13 02:08 PM Re: big foam blocks [Re: ScottBroughton]
ScottBroughton Offline


Registered: 05/14/11
Posts: 12
Loc: Lufkin, TX
Looks like plastic barrels will be cheaper than closed cell foam.
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#339138 - 06/13/13 04:38 PM Re: big foam blocks [Re: ScottBroughton]
outdoorlivin247 Offline


Registered: 03/18/13
Posts: 725
Loc: IL
Someone just said the other day that the playstar 3' x 4' dock floats were on sale...Buy one get one free I think...Just can't remember where?...

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#339164 - 06/13/13 06:28 PM Re: big foam blocks [Re: ScottBroughton]
Cecil Baird1 Offline
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Registered: 08/08/02
Posts: 20043
Loc: Northeastern Indiana
Originally Posted By: ScottBroughton
Where is a good place to get foam blocks to float a dock? I am looking for 12" x 48" x 48" or 96" blocks.


They are made by DOW. Maybe go to a DOW website and do a search for dealers?
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#339173 - 06/13/13 07:20 PM Re: big foam blocks [Re: outdoorlivin247]
JKB Offline
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Registered: 12/03/09
Posts: 6692
Loc: Michigan
Originally Posted By: outdoorlivin247
Someone just said the other day that the playstar 3' x 4' dock floats were on sale...Buy one get one free I think...Just can't remember where?...


It was a sale at Menards that I posted, kinda late tho.

Foam would really be expensive, and it will deteriorate and absorb water.

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#339182 - 06/13/13 08:13 PM Re: big foam blocks [Re: ScottBroughton]
Cecil Baird1 Offline
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Registered: 08/08/02
Posts: 20043
Loc: Northeastern Indiana
JKB,

Not the high density foam billets specifically made for piers by DOW.
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#340356 - 06/22/13 01:29 PM Re: big foam blocks [Re: ScottBroughton]
DonoBBD Offline


Registered: 06/13/12
Posts: 1893
Loc: Ontario, Canada, Eh.
I went the barrels direction with muskrats around they like to chew the crap out of that foam.

Don.
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#341738 - 07/01/13 08:07 PM Re: big foam blocks [Re: ScottBroughton]
PaPond Offline
Member

Registered: 08/29/04
Posts: 161
Loc: Northern Wayne County, Pennsyl...
I've been reading about docks and quite a few members speak of using 55 gallon drums for flotation. I have not had such great luck using floating drums, short of filling them with closed cell foam (and taking out the required second mortgage to do that) they have always ended up partially filling with water. Maybe because I want to leave them in over the winter I am asking too much from the drum but after pricing the foam filled dock floats, I figure it's worth one more inquiry. BTW the floats from Menards are not foam filled.

So can someone tell me the secret to using plastic drums for dock floats?
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#341739 - 07/01/13 08:09 PM Re: big foam blocks [Re: ScottBroughton]
outdoorlivin247 Offline


Registered: 03/18/13
Posts: 725
Loc: IL
The secret is sealing the bungs with a good anaerobic sealer...

As for the playstar floats at menards... They are on sale again for buy one get one free... Thru the 7th I think I read..

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#341740 - 07/01/13 08:12 PM Re: big foam blocks [Re: ScottBroughton]
PaPond Offline
Member

Registered: 08/29/04
Posts: 161
Loc: Northern Wayne County, Pennsyl...
Anaerobic sealer? Something other than silicone? I've never heard the term anaerobic applied to a caulking before.
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#341752 - 07/01/13 09:05 PM Re: big foam blocks [Re: ScottBroughton]
outdoorlivin247 Offline


Registered: 03/18/13
Posts: 725
Loc: IL
Yes, it is designed to not harden til air or oxygen is taken away allowing it to fill all voids..It also remains flexible during expansion and contraction..

Any will work but if the bungs are plastic on plastic they make some specifically for plastic on plastic..

A good coat of 100% silicone over the bung when done wont hurt either..

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#341757 - 07/01/13 09:19 PM Re: big foam blocks [Re: ScottBroughton]
Bluegillerkiller Offline
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Registered: 09/08/09
Posts: 3536
Loc: Illinois, St. louis area
Nothing will stick to a blue barrel especially silicone.. 3M makes a 2 part epoxy that is suppose to stick to it.. I used 3m marine grade caulk to seal my bungs its about 12-15$ a tube but very sticky and what 3m recommends (before they made this new stuff).. You could also use liquid Teflon pipe dope and tighten them down real good with a bung wrench my buddy did that on his dock almost 6 years ago and hasn't had a problem. I don't know anything about anaerobic sealers but it never popped up when I was researching how to seal polyethylen..

Just a quick search online says most anaerobic sealers won't stick to polyethylen without the use of a proper primer


Edited by Bluegillerkiller (07/01/13 09:23 PM)
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#341773 - 07/01/13 10:29 PM Re: big foam blocks [Re: ScottBroughton]
outdoorlivin247 Offline


Registered: 03/18/13
Posts: 725
Loc: IL
A guy I helped build a dock for the river years ago had a anaerobic polyurethane sealant that was made for plastic barrels... It was a one part and I don't think we used a primer, but we were drinking!!!

It took for ever to dry but never leaked.... Years later he sold it and bought an old metal pontoon boat deck to replace it... He said many times he wished he would not have done it.. We put air chucks in that to keep it from sinking.. About once a week he had to refill with air to push the wAter out of the pontoons..

He finally got an aluminum one that doesn't leak..

Texted him to see if be remembered what it was, but he is not sure... He thinks it can from John Deere or a fertilizer company?

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#341785 - 07/01/13 11:42 PM Re: big foam blocks [Re: ScottBroughton]
Bluegillerkiller Offline
Hall of Fame
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Registered: 09/08/09
Posts: 3536
Loc: Illinois, St. louis area
I know polyurethane don't stick to polyethylen or polypropylene, maybe the anerobic aspect of it help makes a good sealant for bungs..
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I believe in catch and release. I catch then release to the grease..

BG. CSBG. LMB. HSB. RES.


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#341789 - 07/02/13 12:01 AM Re: big foam blocks [Re: ScottBroughton]
PaPond Offline
Member

Registered: 08/29/04
Posts: 161
Loc: Northern Wayne County, Pennsyl...
I have a friend who filled some drums with styrofoam packing peanuts by stuffing them full through the bungs so they would float even if they floded because the peanuts will not let them fill up with water. He packed in as many peanuts as he could until it was tight and then emptied a can of closed cell foam crack sealant which swelled and made it pack solid. Maybe the right sealant and packing peanuts filling will be the right combination to use inexpensive drums in place of expensive foam filled floats.


Edited by PaPond (07/02/13 12:04 AM)
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#341790 - 07/02/13 12:06 AM Re: big foam blocks [Re: ScottBroughton]
outdoorlivin247 Offline


Registered: 03/18/13
Posts: 725
Loc: IL
Just make sure you use the right packing peanuts.. Most of the new starch based ones dissolve in water or liquids..

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#341791 - 07/02/13 12:15 AM Re: big foam blocks [Re: ScottBroughton]
catmandoo Offline
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Registered: 08/08/06
Posts: 5680
Loc: Hampshire Co., WV
Hey PaPond -- glad to see you back! We've missed you.

Anyway, I'm on my fourth season with a floating dock made with about fifteen 55-gallon blue plastic drums. We just tightened the caps as tight as we could get them. We did line the threads with teflon tape before inserting them.

During very cold weather, I do notice that the drums suck in a little bit.

Other than that, so far, so good.

However, due to legal constraints, the blue food-grade drums are getting harder and harder to get.

I need a second dock for a pond we built last year. I'm thinking about ordering the foam blocks from Menards. Home Depot says they have them, but when I call or try to order, they don't appear to be available in our part of the US.
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#341794 - 07/02/13 12:26 AM Re: big foam blocks [Re: ScottBroughton]
outdoorlivin247 Offline


Registered: 03/18/13
Posts: 725
Loc: IL
He thinks it was gasolia anaerobic sealant? I googled it and unless they changed the label I am not sure.. They also make a crap ton of different ones...

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#341852 - 07/02/13 11:24 AM Re: big foam blocks [Re: ScottBroughton]
PaPond Offline
Member

Registered: 08/29/04
Posts: 161
Loc: Northern Wayne County, Pennsyl...
Great tip about the packing peanuts, my wife has been saving them for me for some time now so I went out and picked out a few different types to test and sure enough some dissolve! I wonder what else is cheap, abundant, and closed cell foam to stuff the drums with.

Surely there is a pile of something in a factory somewhere destined for the dumpster!
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#341858 - 07/02/13 11:35 AM Re: big foam blocks [Re: ScottBroughton]
sprkplug Offline
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Registered: 06/02/08
Posts: 6945
Loc: Freedom, Indiana
As I posted in another thread, I acquired a couple food grade blue barrels for my maple syrup operation. These had been used to ship butter, so you can imagine how hard to clean they were. I filled them approx 2/3 full with soap and water, and they laid in my yard for five weeks.....every day I would roll them around, and flip them end-for-end. This past weekend I drained the soapy water, and to my knowledge they hadn't leaked at all. They would swell on hot days, and contract on cooler mornings, but the bungs, which were sealed only with the rubber gasket, never leaked.
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If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
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#341872 - 07/02/13 12:12 PM Re: big foam blocks [Re: ScottBroughton]
John Wann Offline
Hall of Fame


Registered: 05/16/12
Posts: 1674
Loc: Phelps county, Missouri
Anybody made a dock with pontoon floats. A guy locally is selling them for $400 a piece. Thought it might be an eay way to build small dock.
http://shopping.rollanet.org/category/406/Boats/listings/411694/PONTOON-TUBES-LOGS-and-FLOATS.html
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#341875 - 07/02/13 12:32 PM Re: big foam blocks [Re: ScottBroughton]
sprkplug Offline
Ambassador
Lunker

Registered: 06/02/08
Posts: 6945
Loc: Freedom, Indiana
I built our dock using steel pontoons, cut in half and welded shut. It was a LONG two days here in the shop welding, pressurizing, and testing for leaks with soapy water. I sealed the outside with epoxy, so far so good. Three years in and still floating.
_________________________
"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.

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