On Monday, November 27, 2017 at 6:18:58 PM UTC-5, Eli the Bearded wrote:
My daughter wants a giant pin board. There are online "tutorials" on how
to make one with sheet foam insulation covered in cloth. That's the sort
of design she would want. I'd rather not buy the styrofoam sheets, as
I'm not keen on the foam mess from them. And since it won't show, real
cork seems like an expensive way to go.

I have seen a compressed paper pulp product, like particle board but
softer, and colored like newprint, used for this sort of thing in the
past. I just don't know what it is called or who sells it.

Searching online I found a UK product called Sunseala that seems very
similar. It does not seem to be available in California. Lowes and Home
Depot have plenty of sheet styrofoam and MDF but I don't see that
paper-pulpy stuff.

Looking to cover about 7' x 7' with whatever I use. What's the product I
should look for?


Have you looked at Dow Foil Backed Tuff-R insulation boards?

You used the term "styrofoam sheets" but that could cover lots of different
materials, if used generically. The foil backed Tuff-R is made with closed
cell "High-performance polyisocyanurate foam core"

https://images.lowes.ca/img/p400/142...7007089_ca.jpg

I made an attic pull-down stair insulation box from the 2" foil backed
Tuff-R insulation and it is some pretty sturdy stuff. Take some push-pins
to the home center to see how well they hold.

If it's going to be covered with fabric, it might be the way to go.