Good Old Rising Damp.

[Brisayshi]

Hello all,
I had a skirting board that was crumbling at the bottom due to rot. When i removed it i noticed part of the wall has rising damp. There are already holes drilled into the brick so guess it has been treated once before. It only seems to be half a brick that is damp. Was reading about damp proofing injection creams but stopped when it said you have to inject the mortar, not the brick. How would you DIY experts tackle this? Thanks

[The Builder]

The simplest way is to have a read here .........

https://www.permagard.co.uk/advice/how-to-use-damp-proofing-injection-cream

They can supply everything you need, plus technical advice if you need it. It's quite self-explanatory.

Inject the mortar joint. I haven't used these products, but I guess it's the same principle as silicone injection, which I am familiar with.

With silicone injection in stonework for instance, the silicone injected into the mortar joint just wraps itself around each stone. The stone itself is not injected since it does not have the porosity to accept the injection.