• 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

 

Wall chaser is used for preparing grooves on walls

Wall Chaser

Wall chaser is used for preparing grooves on the interior walls for installation of in-wall electrical sockets, conduits, water pipes, etc. Experimental results reveal that the application of a wall chaser achieves a significant structure-born noise reduction of around 19dB(A) as compared with that of using a traditional percussive hand-held breaker. In the use of removing wall plaster, a wall chaser can be alternately used with a breaker, which can largely reduce the time of operating the breaker.

 

 

Courtesy of Makita Power Tools (HK) Limited