Hackney's Acoustic Fencing Team

Why this comes up in Hackney

We keep a standing note on Hackney: many boundaries are shared with three or four neighbours on victorian back-to-backs — clear ownership marks matter. As a rough rule, doubling the distance from a point noise source reduces the sound level by a noticeable, broadly consistent amount in open ground, which is why moving a seating area further from a boundary can help almost as much as adding barrier height. Hackney falls under Hackney Council, in the E5 postcode area, neighbouring islington.

Flanking noise paths around a barrier

Flanking noise reaches a listener by a path that goes around a barrier rather than through or over it — past an open end, through a gap at a gate, or via a shared side return — and can undermine an otherwise well-built central section.

Checking for flanking paths at the ends of a run and at any openings is as important as the panel build itself, since sound will take the easiest available route regardless of how solid the main section is.

Temporary acoustic hoarding for construction sites

A temporary acoustic hoarding, sometimes required around a construction site near housing, uses a similar mass-and-seal principle to a permanent domestic barrier but is built for a fixed duration and easier removal rather than long-term weathering.

These hoardings are usually panelised for quick assembly and disassembly, trading some of the sealing refinement of a permanent build for speed of installation and removal once the works finish.

The distance-doubling rule of thumb

As a rough rule, doubling the distance from a point noise source reduces the sound level by a noticeable, broadly consistent amount in open ground, which is why moving a seating area further from a boundary can help almost as much as adding barrier height.

This rule applies most cleanly to a single point source in open space and becomes less reliable near reflective surfaces or with a source spread along a line, like a road, rather than concentrated at one point.

Surveying a noise problem before quoting

An acoustic survey looks at where the noise is actually coming from — road surface height, rail line level or playground boundary — rather than assuming a stock fence height will do the job, because the fence needs to break the direct line of sight to that specific source.

We also check what's already reducing noise on site, such as existing planting or a change in ground level, since that affects how much extra a new fence can realistically add.

Stepping panel height on a sloping acoustic boundary

Where the ground falls along a boundary that needs consistent acoustic screening, stepping the panel height with the slope keeps the top of the run at a consistent level relative to the noise source, rather than following the ground and creating a dip in coverage partway along.

A raked top edge, following the slope directly, can leave a section of the run lower relative to the source than intended, opening a partial sightline exactly where the ground falls away.

Fixing to an existing wall to add mass

Where an existing wall already forms part of the boundary but doesn't give enough height or mass for the noise involved, extending it upward or fixing an acoustic panel section to the top can add the extra performance needed without rebuilding the whole boundary.

The wall's structural condition and the fixing method both need checking first, since an old wall may not be able to safely carry the extra height or weight without additional support.