Had a small brush fire and 2 of my cedars were damaged and burnt, will they grow back. The damage was pretty severe. It burned back to the main structure of the tree leaving the main trunk and bigger part of the branches black and stripped of any foliage.
Sadly, if the trees are still alive, they may regrow - but only at the top or the ends of any branches which are still viable. It will not regenerate or grow new branches or needles where they once existed. You might want to consider removing them and replanting, or just wait and see how they look if they do start growing again. This answer assumes you mean Cedrus varieties when you say Cedar.