Waterlogged/ burned eps foam repair

Oh man- I would just take it to a shop if your not 100% sure- if you don't get the fin lined up just right- it will never ride the same again.

But is you try- use epoxy resin. Not polyester. And use q-cell filler to fill in the area - mix lots of qcell in so its light...

 

Ok go for it then- just make sure the fin is lined up good and the angles to
The board is good too.

Use a lot of masking tape to hold it at the right spot until the epoxy dries

 

Simplistically, Get some 2lb eps and cut to fit the cavity. Use a slurry of epoxy (slow hardener/kwik kick, etc.) and filler and coat both sides and bottom of cavity...fit the chunk of foam in the cavity and then pour slurry in area where there are gaps...sand to fit. Lam and hotcoat...paint done...

Resin is heavy...and using that much would be a waste of money...go this general route and use swaylocks...tons of posts on this concept.

 

Is it a soft top?
You can try spray insulation it does expand and not the same consistency but will adhere. Theres also a product called geo foam.

If your ever in a bind and dont have q cell you can use sugar i prefer slenda its lighter. I used sugar once on a trip and let the board sit overnight the next morning i had ants all over the patch.

 

All I can offer is, take your time

 

The key here is that your using the wrong kind of resin- resin should not burn the foam.

Your using polyester resin (mixing with some drops of catylist) don't use this!!!

You need to use epoxy resin- it's a 50:50 mixture and doesn't get hot and burn. It's sold in two bottles with equal size. West marine has it.

 

Mixing with qcell will make the epoxy fill lighter. Qcell is kinda like a space taker upper. Mix a lot of qcell so it's almost like consistently of puddy

 

Spray foam is a mess. Just an FYI if you have never used it. Good luck if you over fill it or accidentally get it where you don't want it... Ever get it on your hands? I haven't found anything to take it off...!except time

 

Have fun

 

simmer down, now...perfectly logical conclusion that you may have used poly resin on EPS.

Anyway...pretty sure you can use any type of styrofoam you have lying around to fill a hole in EPS. There's some good vids on the net, so I won't go into detail. Basically, cut your styro chunk about the same size as the hole in your board and glue it in there with a q-cell mixture. Let that cure, then seal the top with more q-cell and a couple layers of fabric, like a standard large ding repair.

 

Epoxy resin when pooled up will generate a lot of heat. You can't just fill the void like Poly boards. EPS melts at 160 Degrees. Fill void with more EPS and repair with a little resin as possible.
What waterbaby said is correct.
Good luck!

 

exactly...so much so that just the half ounce that you use to install a leash cup or FCS plugs can start frothing from heat and melt foam unless you take precautions to keep it cool. Speaking from experience.

OP: the advice on using cut pieces of foam to fill as much of the void as possible is how I would do this. Bind it up in the hole with slow cure epoxy resin and as much q-cell (or if you don't have that just pulverize some more of the foam chunks) as you need to get the resin to a milk - shake like consistency. If you find that you are still using a lot of epoxy resin to fill the void, do it in a few stages, and blow a fan on the repair as it sets up to disperst heart

 

I say fill it with sperm.

 

fill the Canadian ?

o barry