Exterior Ply - Life Expectancy

[johnnytheboy]

I have a laavu project on for early next year, I want to make it out of as much recycled materials as possible as I'm skint!

I have seen some exterior ply lying around for the back of it, where no one can see so its a cheap fill in!

Whats the life expectancy of exterior ply in this type of situation!

 

[Mesquite]

Depends on whether it's marine grade, if you weatherproof it, how much bad weather it will be subjected to...

 

[johnnytheboy]

This is the type of thing I'm looking for, ideas for treating, what type of ply I should be looking for, if this stuff is no good, I'll pass on it, any ideas hints and tips appreciated.

Its going on the back of the laavu, there is trees protecting this from the elements, but more worrying the wind and sun etc so it wont dry out very well in its life span.

Hence I dont want to be renewing this constantly!

 

[tomongoose]

if its marine ply I have had some up in the woods for 6 years with no problem except it has rotted a little where it touches the ground.