Closed Cell Foam Rubber Floatation

[kach22i]

Closed Cell Foam Rubber (sponge rubber) is used in many floatation devices. I'm talking about life preservers, boat seat cushions, even floating toys and pool noodle tubes.

In the RIB thread I've found sponsons and pontoons filled with closed cell foam.

I've searched the Internet for foam suppliers, and have not come up with a lot. Once you get into trade names like "Durafoam" the choices become fewer still.

Let's say I had a row boat and wanted to add some buoyancy to it. I could wrap/encase the outside with a big sheet of foam rubber (neoprene based or other non-moisture absorbing material) and cement it to the hull. A variation on this would be to get some really big foam noodles and secure them to the sides of the hull - one big noodle tube each side or lots of little ones up the sides. We could even set them up as out-riggers. Yep, we will be increasing drag and resistance, but will be able to put a lot of payload in, and venture in to very shallow waters as well.

This is all theory at the moment - but I'm sure some nut has already tried it already. If you find them - post them.

I'm not interested in rigid foams - flexible lightweight foams only.

I know that the flexible stuff can be heavier than the rigid foams (extruded polystyreen) but for reasons I don't want to debate at the moment I'm seeking the soft stuff.

Links, names, phone numbers and the like will be appreachiated.

I don't want to get killed on shipping, but anything from around the world is game - just to make it interesting.

Sock it to me.:)

[kach22i]

I found fenders to be close to what I'm looking for. However after talking to a supplier it looks like they take standard .7" roll sheet material and glue it between each layer - like a coil of plywood veneer off a tree - in reverse of course.

http://www.sailboatstuff.com/mor_fenderLg.html
SUPER YACHT FENDER When a conventional boat fender isn't big enough, or when you want to baby your boat... there's the Super Yacht fender. Made from solid closed-cell foam that will not collapse or absorb water, the Super Yacht fender is made for the largest of boats. The skin is made from Ultima solution dyed polyester that will not fade, stretch or mildew. It also has excellent abrasion and tear resistance to stand up to the punishment of protecting your precious investment. There is a 3/4" hole in the center of the fender through which to pass your fender line. The standard color is black,with other colors available on special order. Please email orders@sailboatstuff.com, call toll-free 1-800-44-SAILS or direct +1-707-766-9093 for other colors.
US$219.95 / EACH
Length: 35" Diameter: 12" Weight: 9 lbs. - P/N TMP72001
US$409.95 / EACH
Length: 40" Diameter: 18" Weight: 10 lbs. - P/N TMP72002
US$749.95 / EACH
Length: 47" Diameter: 24" Weight: 11 lbs. - P/N TMP72003

http://www.sailboatstuff.com/images/TMP72001LG.jpg

A little on the high side for me, I'm sure someone has to pay for the engineering, labor and machinery.:cool:

[kach22i]

Bigger even still.

http://www.go2marine.com/g2m/action/GoBPage/id/67465F/giant_marine_ship_fenders_jim_buoy.html?WT.srch=1&WT.mc_id=fr1
Not an inflatable but a 98% closed-cell inner foam core that will never blow-out or sink - even bullet holes will not materially affect its function!

Dia x Length = 36"x 60" $3,200.00 :eek:

Is that big enough.:D
http://www.go2marine.com/go2_structure/6/7/4/6/67465F-f.jpg

[kach22i]

When will it end?

http://www.jimbuoy.com/pages/marine/giantfenders.htm
60" Dia. x 96" Length

http://www.jimbuoy.com/images/product/marine/giantfender2.jpg

[w_water]

I just wanted to reply in this thread because;

a) i'm looking for hard to find materials as well, yours came up in a search

b) you appear lonely in here cause you're the only one who replied

c) :D

[kach22i]

I just wanted to reply in this thread because;

a) i'm looking for hard to find materials as well, yours came up in a search

b) you appear lonely in here cause you're the only one who replied

c) :D
The ecco always keeps me company.;)

Most of my calls to foam rubber companies went unreturned. The ones that were returned yielded no results.

As far as I'm concerned the whole industry is closed cell.:D

I have done some abrasion tests on foam pool noodle material, not promising at all should you ever beach your craft. I'm thinking some kind of coating or lamination will be required, and the built-in ablity to drain or air out the material.

[georgelewisray]

Industrial Insulation closed cell like neoprene is available in sheets.

Defender Industries: (marine supply) sells closed cell for boat cushions.

Foam suppliers for mats used in gymnastics, etc

[kach22i]

Industrial Insulation closed cell like neoprene is available in sheets.

Defender Industries: (marine supply) sells closed cell for boat cushions.

Foam suppliers for mats used in gymnastics, etc
Thanks I had found a supplier in metro Detroit which gets shipments from Chicago (would be direct to me), could get a whole three foot diameter roll for about $500. Sounds like a lot, but the roll had more than double the Square feet than buying it in sheets from other sources at the same price.

I'm not having all that much luck on their website, lots of cool stuff though.

http://www.defender.com/