This week’s Spot the Defect is on a conversion project.

Can you see what’s wrong with the cavity wall extension in this picture?

Let’s see if you can give yourself a pat on the back for spotting the defects that need to be rectified.

In this instance the wall would need to be rebuilt due to the following issues:

  • The junction plate joining the two wall structures does not allow for the appropriate level of movement likely to occur.
  • The existing solid brick walls form a direct path for dampness to bypass the cavity wall and reach the internal finishes.

For more information on building a new home onto an existing building make sure you check out our blog article “Lean on me – how to join onto an existing building”.

By Anna Symington

Please Note: Every care was taken to ensure the information in this article was correct at the time of publication. Any written guidance provided does not replace the reader’s professional judgement and any construction project should comply with the relevant Building Regulations or applicable technical standards. However, for the most up to date LABC Warranty technical guidance please refer to your Risk Management Surveyor and the latest version of the LABC Warranty technical manual.

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