Hi and thank you for reading this post. I was going to re paint the bathroom, so i removed all the fixings. I removed the built in mirror to find what you will see in the pictures. I believe this is the foundation there is no insulation and I see the cracks continues the stairs pattern behind the wall. The larger crack in the picture is about 5 - 6 inches in length and about an inch in width. Also to note i just looked at the pics the crack is actually north to south it just uploaded the picture on its side. Any information on how this is fixed would greatly help. please help this is a great concern at the moment.
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