What does it mingy to black surrounded by a house?
Answers: I never heard the term surrounded by my life.so somebody is dreaming he's a carpenter again.if you mean "close" it within .that means windows doors..surrounded by most cases not the siding...that's why he uses the word "black in" he's talking with serious newspaper on the sidewalls...just be sure you are getting window and doors..sign some daily please.
it means the house is ready for interior work: roof is on, walls are sheathed, windows\doors contained by.
comes from the days when blackboard was used as sheathing, and\or black tar serious newspaper used as vapor barrier.