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Drone view of a Chiltern Surface Co technician on a truck-mounted powered access platform soft washing the render façade at the National Film and Television School, Beaconsfield, with the work area taped off below.

Case study

Bucks · Oxon · Berks · Herts · Surrey

National Film and Television School, Beaconsfield

Four days on a working school site: an 11-metre render façade soft washed from powered access, about 600 square metres of courtyard paving cleaned and treated, and the channel drains cleared.

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Office01628 232 450WhatsApp
office@chilternsurface.co.uk

We aim to reply to every survey request within one hour, 8am to 6pm, Monday to Saturday.

On siteThe east-facing façade, soft washed from powered access with the area below taped off.

Free survey
within five working days
Reply within one hour
we aim to, 8am to 6pm, Monday to Saturday
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on Google
DBS-checked
IPAF-accredited Chiltern Surface Co technicians
£5m
public liability insurance

Building and client

Building and client

The National Film and Television School in Beaconsfield, Buckinghamshire: a working school with students, staff and visitors on site. The east-facing elevation of its main building is about 11 metres high and 24 metres wide, in render panels, above a courtyard and walkways of concrete paving.

The problem

The problem

Algae, lichen and moss had established on the east-facing façade. The concrete paving, about 600 square metres of courtyard and walkways, carried black spot, moss, algae and ingrained dirt, and the channel drains at the foot of the building had silted up. The work had to fit around a site in use and the start of the new term.

What we did

What we did

  • Access method

    The façade was soft washed from powered access set up in the car park, operated by our own IPAF-accredited Chiltern Surface Co technicians, with the area around the platform cordoned off throughout.

  • Days on site

    Four: 12, 19 and 21 September and 2 October 2026.

  • How the site kept working

    The paving was cleaned area by area, and each working area stayed cordoned off until it was safe to reopen. Two of the four days were Saturdays, when fewer students and staff were on site.

  • The scope

    Render façade soft washed from powered access. Courtyard paving pressure washed, then treated for algae and moss. Channel drains cleared of silt.

A Chiltern Surface Co technician rinsing treated courtyard paving at the National Film and Television School, Beaconsfield.
Rinsing the treated courtyard paving.

Result

Result

The façade, about 600 square metres of paving and the channel drains were done in four days on site, between 12 September and 2 October.

A Chiltern Surface Co technician in a powered access platform basket soft washing the render façade, with clean panels above a clear line and stained panels below still to be washed.
Part-way through: cleaned render panels above, panels still to be washed below.
Office
01628 232 450
Mobile
07308 755 755WhatsApp
Request a Site Survey

We aim to reply to every survey request within one hour, 8am to 6pm, Monday to Saturday.

On site

On site

A Chiltern Surface Co technician reaching from a powered access platform basket with a water-fed lance, the render panels clean above a wavy line and stained below it.
Figure 01Part-way through: the line between washed render and panels still to be cleaned.
A Chiltern Surface Co technician in a powered access platform basket beside the stained render panels of the façade at the National Film and Television School, seen by drone.
Figure 02Working from the platform basket, level with the upper render panels.
A Chiltern Surface Co technician running a rotary surface cleaner along walkway paving right beside a glazed building frontage.
Figure 03A rotary surface cleaner working next to the glazing.

Next step

Request a Site Survey

Tell us about the site and what needs doing. We'll survey it free within five working days and send you a fixed price.

Request a Site Survey

We aim to reply to every survey request within one hour, 8am to 6pm, Monday to Saturday.

Office
01628 232 450
Mobile
07308 755 755WhatsApp
Email
office@chilternsurface.co.uk

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