Urban projects
Acoustic
Acoustic performance is measured, not claimed. The AC-90 range is certified to Rw 45 dB in the laboratory (EN ISO 10140-2): a 47 dB laminated glazing unit in a sealed dual-cavity frame with a dedicated acoustic gasket. Sash mass is selected from the noise survey, not from a catalogue default.
Rw 45 dB, EN ISO 10140-2
47 dB laminated IGU
Asymmetric laminated, 24–42 mm
Class 4 (EN 1026)
How it is built
Rw 45 dB certified
Laboratory certified per EN ISO 10140-2 — the figure on the data sheet is the figure from the test report.
Asymmetric lamination
24–42 mm asymmetric laminated glazing breaks resonances that a symmetric pane would carry through.
Sealed dual cavity
The frame carries two sealed cavities plus the acoustic gasket, with airtightness Class 4 as part of the acoustic build.
Material & process
Glazing unit
A 47 dB laminated IGU with a 24–42 mm asymmetric core — the two different glass masses break the resonances a symmetric pane carries through the frame.
Frame build
A sealed dual-cavity frame with the dedicated acoustic gasket, and airtightness Class 4 as part of the acoustic build, because an unsealed joint is a leak in the rating.
Arterial roads, airport radii and rail frontages in all four markets — wherever the noise survey sets the number and the design has to meet it at the sash, not in a rendering.
In the field
What it buys you
A certified number instead of a claim: the Rw 45 dB figure on the data sheet comes from the EN ISO 10140-2 laboratory test.
The acoustic build rides the standard 70/75 mm platform, so the quiet elevation and the normal elevation share one frame line.
The glazing mass is tuned to the survey — you pay for the decibels the site actually needs, not a blanket premium.
Specified systems
All systemsAcoustic Windows
Acoustic windows are specified to a measured figure rather than a style: asymmetric laminated glazing, sealed frame cavities and a dedicated acoustic gasket cut the sound that reaches the room. AC-90 is certified to Rw 45 dB — a 47 dB glazing unit in a dual-cavity frame — for arterial roads, airport radii and rail frontages.
Wood-Aluminium Windows
A wood-aluminium window combines a solid timber interior with a corrosion-proof aluminium exterior, structurally bonded into one profile. WA-70 delivers the warmth of ash, oak or pine inside and weatherproof cladding outside, with a certified Rw 45 dB acoustic configuration and low-U thermal performance for residential façades.
Panoramic Fixed Glazing
Panoramic fixed glazing is a structural glass system that spans floor to ceiling without intermediate mullions. PF-35 uses a 35 mm slim front face and a frameless 45° structural-silicone corner, supporting single panes up to 4,000 × 3,000 mm with laminated, low-E or acoustic glazing for view-first façades.
Questions we get on this specification
Can you hit a lower figure than 45 dB at the sash?
Yes — the glazing mass and cavity are tuned to the noise survey. For a 70 dB arterial street we typically land under 25 dB at the sash with the certified configuration.
Do acoustic units work with tilt-turn opening?
The AC-90 is built on the same 70/75 mm platforms as the tilt-turn and casement ranges, so the sash opens and locks normally with the acoustic build intact.
Specifying acoustic?
Send the drawings or a window schedule — the quotation returns within 24 hours, with the test documentation for this specification attached.