4 Acton Walk, London N9

Bespoke Lifting Frame for Glazing Replacement

Project

4 Acton Walk, London N9

27 October 2026

Specialized Roof-Level Lifting Frame Scaffolding at Acton Walk

KAS Scaffolding Ltd was engaged by OCL FACADES to design, supply, and install a specialised roof-level scaffolding structure at 4 Acton Walk in London. Core scope of the sub-contract required a bespoke 'Style A' Lifting Frame Scaffold to facilitate the safe hoisting and slinging of window units weighing up to 300KG. To accommodate these heavy lifting requirements while protecting the existing building, the engineered setup utilized Belly Towers with connected beams and incorporated up to 650KG in Kentledge, completely avoiding the need for any structural penetrations to the roof surface.

Complex Relocations and Roof Load Management

The logistical constraints of the roof-level installation demanded a highly adaptable scaffolding system, requiring one primary erection followed by nine separate, meticulously planned relocations and strikes across the roof footprint (totaling 10 visits). Furthermore, because the scaffolding was situated directly on the roof structure, there were significant Temporary Works (TW) interfaces and load-bearing constraints to manage. This required seamless operational coordination, as the main contractor was responsible for managing the exclusion zones, pedestrian access, and the structural interface with the roof coverings during every relocation phase to ensure safe, unhindered access for the scaffolding teams.

Engineered Design and Non-Penetrative Counterweight Systems

To solve the structural challenges without damaging the building envelope, KAS Scaffolding delivered a fully engineered, NASC-compliant design package, providing bespoke structural calculations and drawings exclusively tailored for the roof-level 'Style A' lifting frame. By utilizing the 650KG Kentledge counterweight system, KAS ensured the robust stability of the hoist frame during 300KG window lifts without penetrating the waterproofing layer. The multi-visit commercial structure allowed the window installation to proceed safely in phases, backed by dedicated weekly scaffolding inspections conducted by KAS’s competent inspectors to maintain strict regulatory compliance throughout the project duration.

Next Case Study

Work with us

Your Scaffolding Project
Starts Here

Trusted by

I would just like to say that the 4 Operatives on site striking the scaffold at Daniel house have been an absolute pleasure to work with ,they are all great lads, clean and tidy and got the scaffold down in great time.

Steve Whelan

Site Manager

KAS have always provided a prompt service with competitive costs. In addition, advising on savings and value engineering.

Always reassuring to have KAS within the Project Team.

An early engagement with them brings benefits of their expertise to offer the most appropriate solution to various façade finishes and a safe solution for working at height.

KAS can be relied upon during the construction phase to implement their high targets by way of attitude to Health & Safety, co-operation of the qualified work force and commitment to achieve programme dates.

Their pro-active use of web-based admin provides for timely issue & accessible documentation records.

Graeme Brown ICIOB

Project Manager

I had KAS Scaffolding on a project that consisted of 22no Apartments and a commercial unit.

Before, during and after scaffolding works KAS were always easy to work with.

Works were undertaken smoothly and efficiently with attention to detail i.e. clipping all Scaff boards, aesthetically pleasing scaffold, labour well presented with critical dates always met.

From remote link regarding Handovers, inspections, labour skill cards etc, to directors/C.M visiting site to accommodate various issues I have found KAS to be a good sub-contractor and would always recommend.

Edward O'Neill