There is debate about the dash between the two words. Inside Self Storage, the largest publication in the industry, seems insistent on using the dash. However you'll notice the majority of self storage facilities and other websites (including selfstorage.com) do not use a dash.
Since self storage is short for "self-service storage," it makes more sense to me without a dash.
a hyphen connects two words, a dash gives a pause between two words....
That ~ would be a tilde or a swung dash.
"-" = hyphen
No it doesn't require a hyphen.
Storage Hunters - 2011 Cash Dash 1-10 was released on: USA: 22 November 2011
Words that have the word 'dash' in them are dashboard and balderdash.
The 1999 Oldsmobile Alero OBD 2 port is on lower left edge of dash; between storage bin and hood release
A hyphen [or is it an 'n' dash?] is often employed to replace the words 'to' or 'and.'
the fuse box is under the dash on the pasengers side. lift out the dash storage well
dash
dash
A dash is used to connect two phrases; a hyphen is used to connect two words. Here are some examples. I use a hyphen for the compound word anti-matter. I use a dash to create a break in the flow of my sentence -- if you know what I mean.