Ensuring Fire Safety and Acoustic Comfort in Hong Kong Hotels: Key Strategies for Architects and MEP Engineers

In the highly competitive hospitality market of Hong Kong, top-tier hotels seek to create memorable guest experiences that are safe, private, and comfortable. Two critical factors in achieving these goals are robust fire protection and effective sound insulation. However, these objectives are often compromised by inadequate specification, design, or installation. Early-stage attention to firestop systems and acoustic solutions in hotel projects is essential for ensuring compliance, guest satisfaction, and operational continuity.

The Importance of Fire Compartmentation in Hotel Design

Effective fire compartmentation is a core safety strategy in hotel buildings, serving to safeguard occupants, protect valuable assets, and minimize downtime caused by fire incidents. Given Hong Kong’s dense urban environment and strict fire codes, architects and MEP engineers must incorporate tested and certified firestop systems that form reliable fire-resisting barriers. This systematic compartmentation helps contain fire and smoke within designated zones, crucial in high-rise hotel structures common in the city.

Understanding Airborne Sound and Acoustic Requirements

Acoustic comfort is pivotal in hotel design to meet guests’ expectations for quiet and restful environments. Noise in hotels typically consists of airborne sound—pressure fluctuations transmitted through walls and ceilings from sources such as neighboring rooms, HVAC equipment, or street traffic. Hong Kong’s busy cityscape poses additional challenges for maintaining low noise levels indoors.
While international and regional building codes establish minimum sound insulation standards, leading hotels in Hong Kong often adopt stricter guidelines to enhance guest comfort. Architects and engineers are advised to consider these elevated acoustic criteria at the specification stage and work with proven, laboratory-tested firestop solutions that also deliver superior sound attenuation.

Guests’ privacy and comfort in a hotel may be compromised when noise travels uninhibited from one adjacent space to another. A common cause of this problem is due to inadequate acoustic insulation between rooms. Every gap in a wall or in a floor – such as a small cable or pipe penetration – can significantly reduce the acoustic performance.
That said, many sound insulation guidelines are laid out in a variety of directives, international standards, model building code and regulations throughout the world. However, these are generally a minimum, in most cases hotel owners and operators are wise to set themselves even stricter guidelines when it comes to sound insulation, to help ensure the comfort of their guests.

How firestop products contribute to airborne sound reduction 

Walls and floors separating guest rooms, conference rooms, stairways, service or machinery rooms from each other need to meet certain sound transmission classes for airborne noise. Any opening on these elements caused by the various building services (i.e. pipes, cables) may have a negative impact on the sound performance of the walls or floors. Therefore, firestop solutions should not only help to maintain the fire rating of a wall or floor but also maintain the acoustic performance of the building elements.

Airborne sound testing of building elements can lead to different interpretations and results

Hilti performs intensive testing of our firestop products for sound insulation performance, building on clear test standards.
In Hilti’s European Technical Assessments the methods of verification are test standards such as EN ISO 10140-1 and -2. In regions where the American standards are followed, the acoustics performance is tested according to ASTM E90. Set-up and evaluations are standardized but results and interpretations can be complex as there are also many different categories and values, which can differ from country to country:

• STC = the STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. The STC rating very roughly reflects the decibel reduction of noise that a partition can provide.
• Rw = weighted sound reduction index. After evaluation with a reference curve. Single value without flanking noise
• C, Ctr = sometimes correction factors are added to a lab test to compensate for regular noise in a building or similar influencing factors
• Dn,e,w = normalized sound level difference of an element normalized on of 10 m² building elements

An acoustic test always involves a combination of the base material and the “tested object”. A sound measurement gives a result of the acoustic performance of the system. This calculation is a logarithmical addition of the two elements: the wall + the installed firestop product/system.

The results shown in test reports or certificates are sometimes not easy to interpret or compare as they can be significantly influenced by criteria like the size of wall, size of product or quality and construction of the wall.
As an example, many different drywall constructions have both a fire rating and sound insulation rating provided by the manufacturer. 

The specifics of a wall’s construction are important for both fire rating and acoustics. Just looking at a single value of a firestop product detailed in certain technical documents may lead to misinterpretations. This is because there are additional factors to be considered like the size of the wall and opening dimensions. Also, some acoustics tests are based on very limited and non-optimized test conditions and may result in incorrect conclusions.

Give your guests a safer, quieter experience by choosing Hilti firestop products with high acoustic performance. 

Hilti offers firestop systems and solutions which are tested according to established and strict test standards. Products like the Firestop Block CFS-BL and the CP 617 firestop putty pad, help to prevent the spread of fire and smoke and also optimize the acoustics ratings of a construction.

CP617 Firestop Putty Pad

To learn more about the firestop solution for your project

• Hilti Firestop solutions
• Contact a Hilti Engineer