I am redoing my kitchen and had to create a longer splice for the receptacles/switches. I put a blue plastic junction box in the ceiling. There is the white cellulose blow-in insulation all over the ceiling.

Was I supposed to make the J-box completely airtight? There are small gaps where the wires enter the box which could potentially let in some of the insulation, is that a serious hazard?

Unfortunately, access to the J-box is difficult (I know code requires access) so its not an easy fix. Also, I havenÂt made the connection on the other end of the splice which is in the wall, so I donÂt think the J-box in the ceiling is hot yet. Please advise.

Thanks!