Here in Finland we have a company that makes almost the same product...
However all thicknesses are available... there is some that are sandwiched with 1.5 - 3mm ply and then the fiberglass or one side can be any ply thickness or type you desire and or just the fiberglass.
And as some can be very heavy some are also very light.. It depends what the customer will use it for. Made to customer size and thickness.
I went and got the outer skin from this same company... here is the website however not in English..
http://www.kerroslevy.net/
I know that the USA as well as our Country also Imports the Fiberglass sheeting from Germany for use for example on caravans and teardrops..(Yes I did Say teardrops.)
The Company in Germany that makes the product is
http://www.lamilux.de/392.0.html The Company in the USA that has worked or works together with Lamilux is Georgia Pacific.
Also the sandwich panels can be made with just framing for the attatchment points...I took the entire tour of the plant here in Finland of how they make it and construct different products.. one is for the European trucking Industry as well as prefab Sauna Walls..
I just got done making my own sandwiched wall between the galley and interior of my tear.. not using the fiberglass sheeting but Finnish birch with the styro and just frame for the attatchment points.
Classic Finn
