Hi

"Jürgen Spelter" skrev i en meddelelse
...
Hi,
On a massive wooden ground there is a mattress made of foam, we want to
replace.

What would be the best material to built a comfortable and durable bed for
2
persons.

Take an advise from somone who tried several options thru many years.
Try search for "Dunlopillo" ------- not sure it is spelled right, but this
is the best "foam" material you will ever find. The foam is closed cells so
it can not be worn flat and it will last double the time of plastic foam
ones.
It maby cost tree times what a plastic foam one will cost, but you proberly
even realise that this is better than anything else you ever used.
They are made from some natural rubber and is simply the only right thing,
when you once tried one. -------- beside they will not soak or be damp, as
the cells are closed bobbles.
P.C.