• 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

 

Diamond Blade Wall Saw

Because of the special design, this kind of diamond blade wall saw can have sound pressure level lower than the typical one at about 10dB(A). Comparing with general breaker, it can also reduce the impact noise transmitted to other dwellings through structural borne transmission.

 

Courtesy of Hilti(Hong Kong) Ltd.