Do anyone know what they have used in the photo for a DPC .it looks like black tar in the photo pouring out from the stone work. when i touched the stuff its as hard as stone any ideas?
I don't think its bitumen its an inch thick in places and hard as stone it looks like its been injected into the mortar course and hardened
I was thinking of using this stuff by removing a bed of mortar and back filling to fix a wall i have that is suffering from raising damp
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