• Renovation
    Renovation

Interior/ partial interior renovation works at the existing building would cause noise impact to the residents at neighbouring buildings or units. Concrete/ brickworks breaking and tiles/paint removal using handheld breakers are common noisy renovation works.  Sound power levels of traditional handheld breakers can generally reach 108 dB(A).  Use of some smaller mechanical equipment such as mini-breaker or innovative method such as high pressure water jet for tiles/ paint removal would generate less noise during renovation works.

Sound pressure level at 7 meters from equipment

 

Sound pressure levels of traditional and quieter equipment/ method for reference.

Noise reduction

 

Mini-breaker

Mini-breaker is an electrically-powered breaker with pneumatic hammering mechanism, and is designed for medium-duty chiseling on masonry and concrete. The power tool is equipped with an AVR active vibration reduction system which reduces vibration significantly compared to power tools without active vibration reduction.



Courtesy of Hilti(Hong Kong) Ltd.

Sound pressure level in dB(A) at 7m from equipment 80dB(A)