Source: https://jmrplens.github.io/phonometry/guides/sections/sound-insulation/ Sound insulation has a life cycle with three stages, and a page of this section owns each of them. An element (a wall build-up, a floating floor, a window) is first characterised **in the laboratory**, where suppressed flanking isolates its direct transmission. That laboratory data feeds a **prediction** of how a whole building will perform, flanking paths included. The finished building is then **verified in the field**, where the measured values carry the single-number ratings that regulations quote. Each stage answers a different question, and each has its own standards family. A fourth page, on dynamic stiffness, is not a stage of its own but the supporting material measurement that the prediction stage consumes. [Laboratory Insulation Measurement](/phonometry/guides/insulation-lab/) covers the first stage: the ISO 10140 sound reduction index and normalized impact level, the sound-intensity alternative of ISO 15186, the small-mock-up floor-covering improvement of ISO 16251-1 and laboratory flanking transmission per ISO 10848. [Predicting Sound Insulation (EN 12354)](/phonometry/guides/insulation-prediction/) covers the second: the airborne and impact flanking models of EN 12354-1/2 with their junction vibration reduction indices, and the façade insulation and outdoor radiation of EN 12354-3/4. Its floating-floor improvement term consumes the dynamic stiffness measured per [EN 29052-1](/phonometry/guides/dynamic-stiffness/), which is why that measurement page lives in this section. [Field Insulation Measurement and Ratings](/phonometry/guides/insulation-field/) covers the third: field airborne, impact and façade insulation per ISO 16283-1/2/3, the weighted single-number ratings and spectrum adaptation terms of ISO 717-1/2, the ISO 12999-1 uncertainty that qualifies a rating, and the quick ISO 10052 survey method. Two neighbouring sections complete the picture: the room-side quantities (reverberation time, absorption) live in [Room acoustics](/phonometry/guides/sections/room-acoustics/), and the structure-borne noise of building *equipment*, predicted by the closely related EN 12354-5, lives in [Structure-borne sources](/phonometry/guides/sections/structure-borne/). ## Pages in this section - [Field Insulation Measurement and Ratings](/phonometry/guides/insulation-field/): ISO 16283-1/2/3 measurement, ISO 717-1/2 ratings, ISO 12999-1 uncertainty and the ISO 10052 survey method. - [Laboratory Insulation Measurement](/phonometry/guides/insulation-lab/): ISO 10140 characterisation, ISO 15186 intensity insulation, ISO 16251-1 floor coverings and ISO 10848 flanking. - [Predicting Sound Insulation (EN 12354)](/phonometry/guides/insulation-prediction/): flanking transmission (EN 12354-1/2), façade insulation and outdoor radiation (EN 12354-3/4). - [Dynamic stiffness of resilient materials (EN 29052-1)](/phonometry/guides/dynamic-stiffness/): the load-plate resonance measurement and the floating-floor natural frequency.