Traffic noise: calculating and improving façade insulation.
Traffic noise is the noise load on your façade from road, rail or air traffic. The Environment and Planning Act and the BBL set a maximum permitted indoor value of 33 dB in living spaces (bedroom, living room). When the noise load exceeds the preferred limit value the façade must provide sufficient insulation.
Schedule free consultationWhen is a façade insulation calculation needed?
For new construction in a zone with traffic noise above the preferred limit value. For change of use of an existing building (office to residential, retail to residential). For a higher-value decision by the municipality. Under the Schiphol regulation for façade insulation. Or for complaints about traffic noise in an existing home.
The calculation: each façade element separately
We calculate the required façade insulation compliant with NEN 5077 and NEN-EN 12354-3. Every façade element is analysed separately: windows, doors, ventilation provisions (acoustic vents, grilles), roof surfaces and blind façade parts. The weakest element determines the total façade insulation. In practice the windows are almost always the weakest point.
Sound-attenuating measures for the façade
Acoustic glass (from standard Rw 29 dB to Rw 37 dB or more). Acoustic vents for ventilation with sound damping. Sound-dampened grilles replacing open grilles. Gap sealing of frames and doors. Insulation of roof surfaces and dormers. We specify per element what is needed based on the noise load.
Report for environmental permit
The report is directly usable for your environmental permit. Including noise load on the façade (based on noise contour map or calculation), calculations per façade element, testing against the 33 dB indoor value requirement and product specifications for all sound-attenuating measures.
Consultation or direct quote
Schedule a free consultation or request a direct quote via the form. We respond within one business day.