SOLVED. Scifi/Fantasy/humour, Guy has a roll-up door that he can unroll on any surface and go to different places [s]

[Bonnie]

Well, I did a google search for book about a man with a portable door and this one came up. LOL
"The Portable Door" by Tom Holt
There seem to be seven in the series and the cover matches your description.

https://www.goodreads.com/book/show/2...

[[deleted user]]

I agree it's from the J. W. Wells & Co. Series

[Bonnie]

You're welcome