Noticed this horizontal crack in the foundation perimeter beam for a crawlspace in Houston, Tx. This foundation was added to the home for a laundry room and is about 15’ by 10’. There is no earth against this beam inside the crawlspace. The crack extends across on all 3 sides of the foundation addition and appears perfectly horizontal. Any ideas what this is? It appears to me as a foundation built on top of another foundation.
Looks like a parge coating. Not sure about the furnace flue vent tape. ??