Efflorescence but no leaks…

[MrsLight]

OK so I would like to fix the damp problem that I have in my house and I just wanted a bit of advice as to if this is a sensible approach to the problem.

Firstly what the problem is, damp that results in salt deposits 20cm to one meter from the floor. 20cm in the hallway this is on an internal wall that is shared with next door. The other wall is again internal between my front room and my dining room. There is no pipe work above or below these two internal walls although the house was empty for 4 years without heating and single glassed until we bought it.

My proposed solution…
Remove the plaster.
Inject the wall with a Water repellent chemical such as DAMPCURE at the recommended intervals.
Clean wall with salt neutraliser leave to dry for a week.
Cover wall in Bitumen Based Damp Proof Membrame Liquid
Replaster
Does this sound like a sensible plan?

 

[ree]

Remove the plaster to 300mm above the highest damp signs. Remove the skirting and examine the back for rot.

Remedial action would probably be to render the walls with a sand and lime mix at 3:1 and skim with limelite finish or similar remedial plasters. Dont use gypsum plaster.

Forget about your other suggestions.

If you have suspended floor joists bearing into the damp walls then the joist ends should be inspected for decay.

Use the search facility and look up the masses of info on here about damp and its remedies.