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 levels of traditional and quieter equipment/ method for reference.
Renovation
Compared to traditional hammer drills for demolition, it greatly reduces the structure-borne noise impact.
Compared to traditional hammer drills, mini air hammer greatly reduces the transmission of structure-borne noise.
Compared to traditional drilling tool, the use of diamond coring tool can reduce the transmission of structure-borne noise by about 4dB(A).
Compared to traditional hammer drills, the battery-driven fastening tool greatly reduces the noise impact without compromising on the productivity.
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.
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).
Use of acoustic enclosure for stationary plant can achieve a noise reduction up to 20dB(A) easily.
An effective way of reducing noise is to install a purpose-built barrier between the noisy equipment and the noise sensitive receiver.
Electrically-powered mini-breaker with pneumatic hammering mechanism can be used for medium-duty chiseling on masonry and concrete.
Unlike explosive chemicals or expansive compounds, soundless chemical demolition agents do not produce vibrations, and hence, they are completely quiet and safe to use.
Wire-sawing is a flexible sawing technique that can be applied under various situations with excellent cutting performance.
The Quieter Type Blade saw with higher speed and smoother balde reduces the excitation of vibration and hence the propagation of sound.
Less vibration and impulsive noise generated by hand-held concrete crusher than jackhammer.