foamboard only

[Salmonquest]

I am considering making a permanent shanty. I am considring using only 1.5"styrofoam sheets for the sides and no plywood/osb sheeting. I am going to use 2x3 framing on the sideds and roof and for cross bracing. I assume it will be warmer and lighter and they are the same price as the wood sheeting.

I know security will be a risk but I figure they are going to get in if they want anyway. I am concerned about strength but it's not like there should be a lot of strain. I also plan to wrap it with tyvek style house wrap.

The other route is to just go plywood no insulation.

Any thoughts suggestions are appreciated.

[tyme2par4]

I think it should work. You will need diagonal braces on the walls, as the OSB is what typically gives you that diagonal strength.

[Elrik]

where will you be storing it in the off season and what are the roads like to get to the lake from there?  I ask as I have seen someone else do a similar build, but the hut took a beating from tree branches and the like from the drive down to the lake. Not very sturdy against any sort of impact, and if you lose balance and trip while in the hut no guarantee you will be staying inside the hut!

[Salmonquest]

The 1.5" and 2" board seemed to be "fairly" strong. I also plan to put an interior rail to help prevent spillage.

I am going to store it in a storage garage in summer and  ihave a trailer to get it to the launch.

You bring up some very valid concerns though. I am a bit worried about towing it out on rough ice. I have 4 downhill skis to mount to it. :0

[MNice]

I'm thinking of doing the same thing.  My plan is to have 2x2 top & bottom plate, and 3/4" studs with lap joints into the plates.  Insulate with 3/4" rigid foam, then use diagonal bracing on the inside of the wall to add stability and to hold the insulation in place.  This would be a 6 piece (floor, ceiling and 4 walls) take down house.  For the exterior, just house wrap, maybe skin with very light weight aluminum roll stock.  Still in the thinking part of this yet.

[jiggenfrogs]

Think about jacking it up also...that can put it in a bind and with no plywood it may twist on ya.

[Salmonquest]

Think about jacking it up also...that can put it in a bind and with no plywood it may twist on ya.

really good point. I am using a 2x6 perimeter and 2x4 vertical "posts" in the corner going all the way down and screwing through the 2x6. I am also going to run cross bracing inside and out. Still lighter than osb or plywood.

[Salmonquest]

I'll take pics and let everyone know. Found 3/4 r tech foam board at home depot seemed to be pretty strong with supports.