We cut openings in some solid brick walls in our ground floor flat and now have problems with efflouresence accumulating on the cut surfaces at all the openings. We have no dampness in the walls anywhere in the flat, and no rising damp. The efflouresence is appearing from ground level up to 1m high at the cut areas. Above 1m, there is no problem, the finish is fine. The cut walls were originally plastered and painted, but the plaster failed below 1m and the paint bubbled off.
The contractor returned and removed the plaster and applied a Sika product instead of plaster that was supposed to do the trick.. It did not, and the efflouresence is now just as bad as it was originally.
Another contractor informed me that the Sika product has very specific instructions, including waiting a day between two applications. It's possible the contractor didn't apply it as per instructions.
Can anyone tell me what's going on with these walls and what the remedy is?
Thank you!
The contractor returned and removed the plaster and applied a Sika product instead of plaster that was supposed to do the trick.. It did not, and the efflouresence is now just as bad as it was originally.
Another contractor informed me that the Sika product has very specific instructions, including waiting a day between two applications. It's possible the contractor didn't apply it as per instructions.
Can anyone tell me what's going on with these walls and what the remedy is?
Thank you!