Bout three years ago i had the walls inside my house injected with some kind of damp course to stop rising damp. I was renovating the house and all render and plaster was removed and new floors taken out and replaced with waterproof membrane put underneath. Everything was well until about a year ago one of the internal walls has started to blow the render bout 12" inches up the wall and stopped. i was thinking of re-injecting the wall with stuff myself only where i have trouble but dont really know what stuff to inject the walls with. Has anyone got an idea of what has gone wrong and possibly what stuff i can use to stop this? thanks
internal blown render
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