I have a crack where the ceiling meets the wall. The ceiling is drywall and the wall is wood (log). At its widest point (on the right) the crack is 1" wide and it tapers to the left and runs for 24". (Only the right 12" is visible in the image.)
In searching DIY I was surprised that this hadn't already been asked (in this type of detail) and answered - or I failed in searching.
My question is "How do I repair this?" and this can further be broken down into (1) materials and (2) technique.
First off, I've never done this before so really don't know what I'm doing.
In researching materials I've come across acrylic sealants, caulking sealants and expanding foams but not sure which is most appropriate.
For technique, I'm sure that whatever I use is going to be paste or liquid-like and is going to drip as soon as I insert it so how do I stop that from happening? Do I insert and then quickly put masking tape over?
EDIT: Zoom out image as requested.