EPP FOAM (where to buy)

[brapperdoodle]

So it took me a while to find this stuff and a lot of phone calls. You would think google would bring up exactly what you are looking for, but we all know it’s not always that simple. I thought I would share some information due to the fact the only info I could find was 6+ years old and most of the links were 404’d. Anyways I just purchased 2 large blocks of EPP from a company called Foam Factory inc. they were fairly expensive but when it arrived today. Woah. This stuff is very dense. I immediately did a test to see if it would support my weight just standing on the blocks. I weigh about 210 and it didn’t even creak. I’ll update later to let everyone know how it cuts and how easy it is to work with when refoaming. It comes in Black or White and free shipping over $75... I bought a lot though cause I have a few skis and though it could be useful for many things.

https://www.thefoamfactory.com/closedcellfoam/polypropylene.html

 

[2lick]

Interesting, let us know how it goes!

 

[MADMAT]

I wonder what the profit margin on that stuff is!!??? OMG.

 

[Big Kahuna]

You could make a hot knife to cut it....... or use a wire cutter. Hot knife will be better for shaping.

 

[brapperdoodle]

I was just warned not to use this stuff, as it will absorb water. Sucks for me but I guess I will find another use for this foam I did a lot of research though and I know that polypropylene foam is used for the OEM nose piece in front of the water box. Maybe this is a different compound?

 

[Moto Joe]

I was just warned not to use this stuff, as it will absorb water. Sucks for me but I guess I will find another use for this foam I did a lot of research though and I know that polypropylene foam is used for the OEM nose piece in front of the water box. Maybe this is a different compound?

I used this same exact stuff from the Foam Factory, and it most definitely does NOT absorb water... not sure who would have told you that...

 

[brapperdoodle]

It’s also frustrating on this site when people chime in, then I ask a question only to be ignored. A handful of people on here have been abundantly helpful, while others throw out facts but I guess don’t have time to answer “silly noob questions” I just haven’t figured out how this works.

 

[Sanoman]

View attachment 385725
It’s also frustrating on this site when people chime in, then I ask a question only to be ignored. A handful of people on here have been abundantly helpful, while others throw out facts but I guess don’t have time to answer “silly noob questions” I just haven’t figured out how this works.

Totally agree with you! Filtering out the ones that think they know is a difficult process.Lots of keyboard cowboys..

 

[brapperdoodle]

I’m not trying to call anyone out, but it’s hard to know who is who. It’s like some people expect you to follow their word like it’s god... and don’t question it, just obey! Haha it’s all good though I just like to share experiences and information the best way I know how... funny thing is, I called foam factory to see if I were able to return this foam and they said 25% restocking fee, plus I have to pay for the “free shipping” and pay for shipping back. Would have cost me more to send it back haha that being said, I’m going to do some experiments with this foam including an underwater test and gasoline tests. Just to see what happens. And maybe I’ll take 1 block and make myself a log jump to play with on the lake haha

 

[thomps33]

Just a thought. What about using closed cell spray foam? Spray it in and then just cut it/ shape it to your needs. It doesn't take on water at it adds structural rigidity.

 

[Whateverguy]

Most "non absorbing foams" will absorb water. Especially when they have been damaged or impacted. The tiny cells get crushed and then start absorbing water.
I've been working on boats for 16 years, specifically fiberglass repairs. Cant tell you how many boston whalers I've seen with soaked foam due to impact or damage. They will tell you that it wont absorb water, but it will. I think guys on here read too much and go overkill with their repairs, it's all way more simple than what most of the guys on here make it out to be.

 

[McDog]

https://m.goodrx.com/epifoam/what-is

 

[hornedogg79]

Extruded polystyrene is what you want.

Polyurethane 2part closed cell foam is ok until you cut , sand, or break it, then it absorbs through the opened cells. Only the cured outer layer is waterproof.

Bead construction foam blocks (even polystyrene) are similar. Once cut or broken it allows water into the open area between the beads. I can't help but think of my old hot tub cover. It blew off in a storm and broke the foam inside. It wasn't even bad so I thought no big deal.... few weeks later that side of the cover felt like it weighed 100lbs. Totally soaked.

EPS/XPS insulation sheets are solid extruded sheets of polystyrene and not from bead construction. I've redone a few trays and this is my preferred method. 1/2" sheet of eps, box of razors, gorilla glue. Cut the foam in pieces and pack every nook and cranny. Use a tiny bit of glue to hold loose pieces. I like to build up the new tray directly on the foam so there's no possibility of an air gap.


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[Wave ninja]

⌨️EPP for me