I was recently drooling, er viewing plywoods at a local (non-Box) wood store and ran across plywood tagged "lightweight".  I did find some internet references, so it appears to be a Real Thing.  Any of you use it yet?  Is this same-O product under different name?  

First I've heard of it, it will be interesting to see the replies.

40 minutes ago, Fred W. Hargis Jr said:

First I've heard of it, it will be interesting to see the replies.

 

Same here.  I have to wonder what the core is

13 minutes ago, Cal said:

 

Same here.  I have to wonder what the core is

Air?

I Googled it just to see.  It could be Balsa wood.

 

https://www.hunker.com/13401290/what-is-the-lightest-plywood

 

 

45 minutes ago, Gene Howe said:

Air?

Pizza crust

The Lowes by me has foam core plywood.

The stuffs pretty weird, it's real flexible.

1 minute ago, Larry Buskirk said:

The Lowes by me has foam core plywood.

The stuffs pretty weird, it's real flexible.

Sure wouldn’t form concrete with it. 

I got some lightweight MDF (LDF???) once.  Could that be the core?

Apologies!  The name is "ultralight", and the store tells me it's just like any veneered core, core is layers of wood.  The internet info cleared a bit when I used the proper name.  The version in this store* is stocked 3/4 and 1/2.  I looked at it, and the layers seem the same as "ordinary" ply (NOT BB).  Veneer in this case is pine (I'm doing a painted project).  I'll give 'er a try.

 

*Timber WW/M in Mesa, AZ

 I am NOT an informed builder and I'd heard of foam core ply. I did a search and there is a huge assortment of that stuff and I could see how it would be a time saver. I would consider it if I was building home.

What's the purpose of the foam core...to provide that flexibility?

Boat builders use foam core. It must be somewhat flexible. In home construction, it probably has some insulative qualities. Could it be an alternative to sheet rock?

Could also be bamboo - I've gotten some samples from an eco-wood place here in Aus, and they used bamboo as part of the plies. Does make the wood lighter.

Of course, you then need to consider what you use the product for....