APT Sound Testing: Floor Plenum Testing
Providing Expertise in Floor Plenum Testing
At APT Sound Testing, we specialise in conducting comprehensive floor plenum testing, following the “Floor Plenum Airtightness – Guidance and Testing Methodology” (BG 65/2016). This ensures that your building’s HVAC (heating, ventilation, and air conditioning) systems operate efficiently and that air is distributed correctly throughout the occupied zones of your structure.
What is a Floor Plenum?
A floor plenum is a void between the structural floor of a building and the raised access floor above it. This void is typically used to distribute conditioned air into the spaces above, allowing for an efficient delivery of heating or cooling to occupied zones. The airtightness of the plenum is critical in ensuring that conditioned air flows only into these intended spaces. Any leakage into adjacent cavities, such as risers, stairwells, heating trenches, or other areas, can significantly affect the efficiency of the HVAC system and lead to higher energy consumption, discomfort in the occupied areas, and potentially damage to sensitive building elements.
An adequately sealed floor plenum allows the diffusers and grilles, which control the airflow, to perform their primary function correctly. This improves the distribution of air within the occupied spaces and maintains desired indoor conditions without unnecessary energy loss.
Floor Plenum Testing Process at APT Sound Testing
Our team at APT Sound Testing uses specialized equipment to carry out floor plenum testing. The key tool in our process is a high-performance fan, which is set up in the test zone. Before the test begins, all air ducts serving the test zone are turned off, isolated, and sealed to prevent any external airflow from interfering with the results.
Once the system is secured, we proceed with the test by performing a series of pressure readings. These readings help us determine whether the plenum is airtight or if there are air leakage issues that need to be addressed. Should the floor plenum fail the test, we can carry out a detailed smoke survey to visually identify air leakage paths. The smoke survey is highly effective in pinpointing the exact locations where leaks occur, which allows for precise remedial action. Afterward, we provide a comprehensive report that outlines the findings of the smoke survey and serves as a guide for sealing contractors to carry out the necessary repairs.
The Importance of Floor Plenum Testing
If your building includes floor or ceiling plenums, it’s essential to be aware of the common challenges associated with ensuring airtightness. Data indicates that approximately 70-75% of floor plenums fail their first airtightness test. This high failure rate underscores the importance of proper planning, testing, and remediation efforts to achieve optimal performance.
At APT Sound Testing, we bring years of expertise in performing raised access floor plenum air pressure tests. Our goal is to work with you to ensure your floor plenums pass the airtightness test on the first attempt, thereby avoiding costly delays and rework.
Pre-Test Inspections and Initial Testing
We recommend that an on-site air test audit is scheduled as soon as the raised floor is in place. Early detection of potential air leakage paths can save time and prevent issues later in the construction process. During this initial phase, we can carry out both a preliminary floor plenum air test and a smoke survey. These preliminary tests allow us to evaluate the airtightness of the plenum envelope and identify any areas of concern.
Once we have completed our assessment, we provide you with a detailed smoke survey report. This report is essential for sealing contractors, as it highlights specific areas that need attention to ensure the plenum is properly sealed before final testing is conducted.
How We Conduct Floor Plenum Air Testing
The process of floor plenum air testing is methodical and precise. To begin, a temporary floor tile is removed, and a fan housing is installed over the opening. The fan is then securely placed within the housing, and the surrounding area is sealed to prevent air from escaping around the fan during the test.
Next, all air handling ducts serving the test zone are turned off, isolated, and temporarily sealed. This prevents any air from traveling through the ductwork and compromising the test results.
After these initial steps are completed, another floor tile is removed and replaced with a mock tile that has a small hole for a high-pressure tube. This tube is essential for measuring pressure differences and ensuring accurate readings during the test.
Once all the equipment is properly set up, we conduct a series of pressure tests, recording the data as the tests progress. These readings are then checked against the specified airtightness standards for the project.
Floor Plenum Testing Standards
It’s important to note that, as of now, there is no universal or legally mandated standard for plenum testing. Typically, the specifications for a project are set by the mechanical engineers overseeing the HVAC system design. These specifications are usually defined in terms of airflow leakage, such as litres per second per square metre (l/s/m²) at a given pressure (e.g., 0.7 l/s/m² @ 50 Pascals). In some cases, the specification may be given in litres per second per cubic metre (l/s/m³), which would require us to know the volume of the plenum for testing purposes.
Whatever the specific requirements of your project, APT Sound Testing is fully equipped to carry out floor plenum testing in accordance with the relevant specifications. Our expert team can visit your site to recommend the most suitable testing procedures and ensure that your floor plenums meet the necessary airtightness criteria.
Why Choose APT Sound Testing?
When it comes to floor plenum airtightness testing, choosing APT Sound Testing means partnering with a team of professionals who are dedicated to providing accurate, reliable, and timely results. Our focus on customer satisfaction and commitment to maintaining the highest standards of service ensures that your project is completed to the best possible standard.
As a UKAS-accredited laboratory, we offer peace of mind through our expert knowledge and rigorous testing processes. Our friendly and knowledgeable staff are always available to provide guidance on your specific needs and answer any questions you may have regarding the testing process.
Contact Us for Your Floor Plenum Testing Needs
If you require raised access floor plenum testing, don’t hesitate to get in touch with us today. Our team is ready to assist you with all aspects of plenum airtightness testing, from initial inspections to final certification.
You can reach us by calling 01525 303905, or by filling out our online contact form. Our acoustic and airtightness consultants will be happy to discuss your specific requirements and provide the best solutions to meet the needs of your project.
In summary, APT Sound Testing is your trusted partner in ensuring that your building’s floor plenums are properly sealed, energy-efficient, and fully compliant with your project’s specifications.