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Case Study

2 Stephen Street Roof Works

2 Stephen Street, W1T 1AL
  • £970k
  • November 2024
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Project Overview

Bayanix was engaged as the principal contractor to refurbish six roof areas at 2 Stephen Street, a commercial office building in central London. The project involved the removal of the existing inverted roof system and the installation of a new Langley cold-applied liquid warm roof, with planters and decking added to enhance usability for occupants. The live building environment required a carefully phased programme to minimise disruption to tenants.

The 986sqm project showcases Bayanix’s expertise in waterproofing and complex logistics, delivering high-quality results that meet the client’s functional and sustainability objectives.

Client Objectives

The primary objective was to address leaks in the existing asphalt roofs while ensuring long-term durability and improved usability. The new roof system, comprising Langley’s cold-applied liquid membrane and non-combustible planters, was designed to meet the highest standards of quality and safety. Regular inspections and interim reports ensured compliance with the 20-year warranty requirements.

ClientDerwent London via Black Cat

Project Duration27 weeks

Collaborations

  • Manufacturer & Supplier: Langley

  • Roofing Contractor: Premier Roofing Contracts

  • Surveyor & Contract Administrator: Black Cat

Project Highlights

Langley Cold-Applied Warm Roof System

Bayanix installed a three-coat liquid warm roof system by Langley, encapsulating insulation between the membrane layers. Weekly inspections by Langley ensured adherence to quality standards, resulting in a 20-year insurance-backed guarantee.

Bespoke Planters and Decking

Two of the roof areas were transformed into functional spaces with composite decking and non-combustible planters. The existing shrubs were replanted, and a new irrigation system was installed to ensure sustainability.

Minimal Disruption in a Live Building

Bayanix’s phased approach minimised noise and disruption, with one roof area accessible only through the office, requiring weekend work to avoid tenant inconvenience.

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Challenges & Solutions

Live Building Environment

Noise restrictions and tenant access posed significant challenges. Bayanix’s precise planning and communication ensured seamless execution without disrupting building operations.

Weather-Dependent Installation

The Langley cold-applied liquid membrane required an 8-hour cure time per coat. To mitigate delays and costs from potential weather interruptions, Bayanix adapted schedules and applied protective measures.

Unexpected Roof Conditions

During the removal of the inverted roof, unforeseen conditions in the existing slab required careful inspection and remedial works. Bayanix’s commercial awareness ensured these issues were addressed promptly without impacting the overall timeline.

Ready to get started?

Give our expert team a call 0207 871 1330

Challenges & Solutions

Live Building Environment

Noise restrictions and tenant access posed significant challenges. Bayanix’s precise planning and communication ensured seamless execution without disrupting building operations.

Weather-Dependent Installation

The Langley cold-applied liquid membrane required an 8-hour cure time per coat. To mitigate delays and costs from potential weather interruptions, Bayanix adapted schedules and applied protective measures.

Unexpected Roof Conditions

During the removal of the inverted roof, unforeseen conditions in the existing slab required careful inspection and remedial works. Bayanix’s commercial awareness ensured these issues were addressed promptly without impacting the overall timeline.

Added Value

Tenant-Centric Planning

By maintaining continuity of operations and minimising disruptions, Bayanix enhanced tenant satisfaction while keeping the project on schedule.

Sustainability Focus

The completed roof areas feature sustainable design elements, including durable decking, planters, and shrubs supported by an efficient irrigation system.

Quality Assurance

Weekly inspections by Langley and the issuance of a 20-year insurance-backed guarantee underscore the project’s high-quality workmanship.

“Amazing work with no disruption to the tenants or neighbours. Bayanix delivered exceptional results under challenging conditions.”

The Results

The roof works at 2 Stephen Street highlight Bayanix’s commitment to quality, sustainability, and client satisfaction. By addressing logistical and environmental challenges with precision and innovation, the project delivered durable, functional roof spaces that exceed expectations. This case study reinforces Bayanix’s reputation for simplifying complexity in live environments while delivering exceptional outcomes.

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