In central London commercial kitchen extraction systems are often installed within extremely restricted building spaces, creating major challenges for maintenance and fire safety compliance. When these systems become contaminated with grease deposits, safe access becomes critical to ensure the ductwork can be properly inspected and cleaned. Rope Access 24 Seven was recently instructed by a London client to carry out a specialist professional rope access project involving a heavily contaminated kitchen extraction riser positioned within a narrow void between buildings. The riser also passed through existing bird control netting, adding another layer of complexity to the access requirements.
Due to the confined environment and lack of ground-level working space, traditional access methods such as mobile platforms or scaffolding were not practical. Our team used specialist professional rope access techniques to safely reach the riser, temporarily remove and reinstate the netting, install additional access panels where required and complete a full clean of the duct system.
The Situation
Kitchen extraction risers are a critical component of commercial kitchen ventilation systems, removing grease-laden air, smoke and heat from buildings. However, when risers are positioned externally or routed through confined building voids, regular maintenance is often neglected due to access difficulties.
At this London site, the kitchen extract riser was located within a very narrow gap between two buildings, severely restricting conventional access options. The riser also passed through installed pest control netting designed to prevent bird activity within the void.
During the inspection, our team identified significant grease contamination throughout the riser system, creating serious ventilation hygiene non-compliance and increased fire risk concerns.
The Challenge
This project presented several complex access and safety challenges.
Key issues included:
- A kitchen extract riser positioned within a confined building void
- Existing pest control netting obstructing direct access
- No suitable ground space for mobile platforms or lifting equipment
- Scaffolding would have been costly, time-consuming and disruptive
- Significant grease contamination requiring specialist cleaning
- The need to maintain fire safety compliance within the building
The restricted environment meant that professional rope access was the only viable solution for safely reaching the riser and carrying out the required works.
Our Approach
Our objective was to provide a safe, efficient and fully compliant professional rope access solution for the inspection, access improvement and cleaning of the riser system.
Following a full site assessment, our rope access operations team developed a specialist work plan that allowed technicians to safely descend within the confined void while maintaining full control of the working area.
Using IRATA-certified rope access technicians, we were able to complete the project without the need for disruptive scaffolding or heavy mechanical access equipment.
The Process
Initial Assessment
Our team attended site to inspect the kitchen extraction riser and evaluate the safest method of access within the restricted void.
This stage included:
- Inspection of the contaminated riser system
- Assessment of the pest control netting installation
- Risk assessments and rope access planning
- Development of a comprehensive rope rescue plan
- Identification of additional access panel requirements
Careful planning ensured the work could be carried out safely within the confined environment.
Removal and Reinstatement of Pest Control Netting
To safely access the riser system, sections of the existing bird control netting were temporarily removed.
Once the cleaning and maintenance works had been completed, the netting was professionally reinstated to maintain ongoing pest prevention within the void area.
Installation of Access Panels
Where access to sections of the riser was insufficient, our technicians installed specialist access panels within the ductwork system.
These access points now allow future inspections and maintenance works to be completed more effectively and in line with ventilation hygiene best practices.
Specialist Riser Cleaning
Using specialist ventilation hygiene cleaning techniques, our team carried out a full clean of the heavily contaminated kitchen extract riser.
Large accumulations of grease deposits were removed from the internal surfaces of the ductwork, significantly improving the condition of the system and reducing the associated fire hazards.
Qualified Professional Rope Access Technicians
All works were completed by IRATA-certified professional rope access technicians who are experienced ventilation hygiene specialists.
Their expertise allowed the project to be completed safely and efficiently within a highly restricted environment.
Clean & Compliant Outcome
Following completion of the works, the kitchen extract riser was left clean, accessible and significantly improved from a fire safety and ventilation hygiene perspective.
The installation of new access panels will also support ongoing maintenance compliance moving forward.
The Outcome
By using professional rope access techniques, Rope Access 24 Seven was able to complete the project safely and efficiently without the disruption associated with scaffolding.
Key benefits included:
- Safe access within a narrow building void
- Removal and reinstatement of pest control netting
- Installation of new access panels
- Full cleaning of a heavily contaminated riser system
- Improved ventilation hygiene compliance
- Reduced fire risk within the extraction system
- Faster operational response and project completion
- No need for disruptive scaffolding or mobile platforms
The client was left with a fully cleaned and maintainable kitchen extraction riser system that now meets ongoing maintenance requirements more effectively.
Conclusion
This project highlights the growing importance of professional rope access services within the ventilation hygiene and building maintenance sectors.
In complex urban environments such as London, many kitchen extraction systems are positioned in locations where conventional access methods are impractical or prohibitively expensive. Professional rope access provides a safe, efficient and cost-effective alternative for accessing restricted areas and carrying out critical maintenance works.
Rope Access 24 Seven regularly supports facilities managers, building owners and commercial kitchen operators with professional rope access solutions for ventilation hygiene, riser cleaning, access installation and difficult-access maintenance projects across London and the UK.
Contact Rope Access 24 Seven
If you require rope access ductwork cleaning, riser cleaning or specialist ventilation hygiene services, our experienced teams are ready to help.
📞 Call our Operations Team: 0203 640 8247 to find out more.
📧 Email: info@24sevengroup.co.uk
For information about our full range of services use these helpful website links Rope Access Ductwork, Industrial Rope Access Services, Rope Access Building Maintenance, Doff Cleaning and Pest Control.