I'm not going to seal the balcony, living room and balcony is Chanshang installed steel doors, solid wood floor shop to shop, would you like to do waterproof?
No, it's waterproof on the balcony. There is a slope between the floor and the floor drain, and the rainwater is no problem.
I suggest you better seal up, 1, clean 2, security, especially with children's family 3, airtight good, good privacy, sliding door general sealing is not very good