Residents in a South Perth apartment building have been stopped from using their balconies because of falling glass.

Those living inside the Pinnacle Apartments building have been unable to go onto their balconies for close to two months because glass keeps falling from the 18-storey building on the corner of Labouchere road and Charles Street.

It's happened six times over the past 30 months, most recently on September 6.

On that occasion, balustrading from the top storey shattered onto the footpath below in the middle of the day.

Residents in a South Perth apartment building 18-storeys high have been stopped from using their balconies because of falling glass. Picture: 7NEWS

Luckily, it missed any pedestrians below, but a resident told 7NEWS they “were lucky not to get hurt”.

According to emails from the council of owners, the issue could be because plastic spacers weren't put in between the panels when it was being built just over two years ago.

The builder, WA firm Jaxon Constructions, says they only know about it happening once.

They said the issue is between the local council, the developer and the strata management company.