u/clauren02

We want to get some gas logs in our old fireplace. There is about a 0.6 inch gap between the box and the brick on the top edge. The fireplace salesman said it isn’t safe to use a fire with the gap. We sealed all the other gaps with fireproof caulk, but this one is too wide for caulk. What do y’all recommend for a home DIY fix? Is he right that it isn’t safe? Be kind plz I am new to this stuff 😀