Wall linings – water staining

Cause

Leaking roof, wall or window/wall intersection, or leaking parapet or balcony

Repair

  • locate the source of water entry. If a single leak is found, repair it following the advice on other pages of this site, such as for Roof leaks or Window leaks. Wall linings may need to be removed in some cases. Engaging a registered building surveyor for advice is recommended

  • investigate whether the leaks have led to other problems such as mould or rot in timber wall framing. This must be addressed – again, engaging a registered building surveyor for advice is recommended

  • if wall framing and linings are sound allow framing to dry, repaint or paper the wall to remove evidence of staining after the leak is repaired

  • where it is suspected that building leaks may widespread (particularly if the area of the leak represents common detailing or construction used on the building), engage a registered building surveyor to investigate

Cause

Leaking pipe in the wall due to corrosion or a nail puncturing the pipe

Repair

  • engage a registered plumber to locate the leak and make repairs. (This work falls into the category of ‘sanitary plumbing’ and DIY is not permitted.)

  • locating and repairing the leak is likely to require the removal of internal linings or claddings

  • once the repaid is made, allow framing to dry, then restore the linings/cladding and redecorate

  • where it is suspected that building leaks may more widespread (which could be likely if corrosion is the problem) engage a registered building surveyor to investigate

Cause

Shower mixer/taps leaking into the wall (note that the leak may only become obvious when significant damage has occurred)

Repair

  • engage a registered plumber to locate the leak and make repairs. (This work falls into the category of ‘sanitary plumbing’ and DIY is not permitted.)

  • locating and repairing the leak is likely to require the removal of internal linings or the shower unit itself

  • a determination should be made as to whether the leaks have caused mould or rot problems in timber wall framing (more likely where the leak is not new). If mould or rot is found, this must be addressed as part of the repair. Some moulds such as stachybotrys can be harazdous to health

Cause

Old-style toilet cistern overflow pipe on inadequate slope, causing water to run back along pipe and into wall framing

Repair

  • engage a registered plumber to readjust cistern level or replace the cistern with a new unit that has an inbuilt overflow system. Replacing the whole toilet may be the best and most cost-effective option