our house has had settling problems in the past. today I noticed where the brick that raps the fireplace (gas, ventless logs) insert has a good size gap. the gap is outside the firebox. the fireplace was originally a wood burner, but someone previously installed NG logs. the chimney still has a screened but open top. in springtime, i'll try installing a cover.
thoughts on what I can use to seal up said gap between brick and frame ??
thoughts on what I can use to seal up said gap between brick and frame ??