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Acoustic

Hit the sound-insulation thresholds — on paper first.

Acoustic simulation and reporting for glazed products: the Rw, C and Ctr figures you need, with glass and interlayer selection to meet the target without over-specifying.

NCC 2025 · Vol 1 F7 · Vol 2 H4 (H4P6) · Housing Provisions Part 10.7

The acoustic data your systems need to prove

Glazed products carry a sound-insulation requirement like any other. We model and report the acoustic performance so you can demonstrate the thresholds are met — and choose the leanest make-up that gets there.

Metrics

Rw, C and Ctr

The weighted sound-reduction index and its spectrum-adaptation terms — the exact figures demonstrating compliance.

Selection

Glass & interlayer

Guidance on glass thickness, asymmetry and acoustic interlayers to reach the target without gold-plating the build.

Report

Certifier-ready

Clear reporting against the thresholds, product-neutral, that slots into your compliance pack.

Independent & product-neutral. AFRC Lab is a third party. We map the method, specify the performance it must meet, train your people and verify the outcome — we don't supply, sell or endorse any product or brand. You procure systems and materials from your own suppliers; our role is to make the result defensible, whoever you buy from.

Prove the acoustic number.

Tell us the target and the system, and we’ll report the Rw / C / Ctr and the make-up to hit it.

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