DIY & Home Improvement

You should definitely check for exposed wires or open boxes (you should do that anyway).

You can work around the stuff later and/or replace where needed. It just gets a bit messy.

All our residential electrical here in Chicago is in conduit so pulling wires later is easier. Most of the country uses Romex (non-metallic cable) for residential.

We did some work at my mother-in-law's house down-state where Romex is used. The electrician we had on-site suggested mounting any new junction boxes in the attic on the roof rafters rather than burying the boxes in the cellulose. This makes finding/access easier post insulation. I suppose you can flag/mark any fixtures or boxes for future reference.