DWC raft material? where to get styrofoam?

[wolgie]

Ok I am getting closer to setting up my system and trying to decide on my raft material. I don't feel too confident in the "blue board" material. What about regular styrofoam "white". I am looking for the safest possible solution.

Where would the best place to get the safest styrofoam raft material here in the US?

Is wood, with supports a viable option? If so what kind of wood?

Thanks,
Wolgie

[Damon]

Lowes or home depot. Use the noneprecut blue board. The problemwith other insulation boards is they may contain the main chemical thats in cyonide... so be careful if u do choose to not go with the blue board.

[wolgie]

Thanks for the response, but what is in the blue board to waterproof it? (make it the blue board and not standard white) fire retardant?

[Cecil]

Thanks for the response, but what is in the blue board to waterproof it? (make it the blue board and not standard white) fire retardant?

The blueboard is a denser foam. The white stuff crumbles and get's water logged. I used the pink version of the blueboard when I built my RBC's and it's holding up fine a year later. Only problem is the blue or pink board is more expensive.