Quick answer
After a commercial ventilation clean or rope access duct inspection, facilities and maintenance managers receive a report confirming what areas of the system were accessed and cleaned. However, if a report includes “no access” observations, this does not mean the entire system has been cleaned or is compliant. Certification only applies to the sections that were accessed, inspected and verified.
What to check when reviewing a ventilation cleaning report
1 Confirm which areas of the system were accessed
A ventilation or kitchen extract cleaning report should clearly identify the areas that were inspected and cleaned.
Look for documentation covering:
- Access points used during the service
- Sections of ductwork cleaned
- Fans, canopies and filtration systems inspected
- Internal duct runs that were accessed
For systems inspected using rope access duct techniques, reports may also reference external access routes used to reach high-level ventilation infrastructure.
Understanding which areas were physically accessed is the first step in assessing the condition of the entire system.
2 Pay attention to “no access” observations
One of the most important elements of any ventilation cleaning report is whether the report identifies areas where access was not possible.
If a report states “no access”, it means:
- The cleaning team could not reach that section of ductwork
- The internal condition of that section could not be verified
- No cleaning or inspection was carried out in that area
This does not mean the system remains compliant. It simply means that part of the system has not been assessed.
Facilities managers should treat no access observations as a maintenance or compliance issue requiring follow-up action.
3 Understand the insurance implications
For commercial kitchens and ventilation systems, incomplete cleaning can have significant insurance implications.
If a report identifies no access sections, insurers may consider:
- Parts of the system remain unverified
- Grease or contamination may still be present
- Fire risk assessments may be incomplete
In the event of a claim, insurers may examine whether the entire system was cleaned and inspected. A certificate linked to a report containing no access areas will only apply to the sections that were actually accessed.
Facilities managers should ensure that access issues are addressed to avoid gaps in documentation.
4 Review micron readings before and after cleaning
Professional cleaning reports should include micron readings taken before and after the service.
Micron readings measure the thickness of grease or contamination within ventilation ductwork.
Typical reporting will include:
- Pre-clean grease thickness readings
- Post-clean verification readings
- Identification of areas where readings could not be taken
These readings provide objective evidence that cleaning has achieved the required standard.
5 Check before-and-after photographic evidence
Visual documentation is an essential part of a credible ventilation cleaning report.
A professional report should contain:
- Internal ductwork photographs before cleaning
- Images taken during the cleaning process
- Post-clean photographs confirming the result
Photographic evidence allows facilities managers to verify that cleaning has been completed to the expected standard.
Where rope access duct inspections are used, photographs may also document high-level ductwork or external ventilation infrastructure.
6 Ensure schematic drawings are included
A complete report should include schematic drawings or system layouts.
These drawings help facilities managers understand:
- The route of the duct system
- Access panels and inspection points
- Areas that were cleaned or inspected
- Any areas where access was not possible
Without schematic drawings, it can be difficult to determine whether the entire system has been assessed.
7 Understand what certification actually covers
Certification issued after ventilation cleaning only applies to the sections that were accessed and verified.
If a report includes no access observations, certification may not cover:
- Unreachable duct runs
- Sections without access panels
- High-level ventilation areas that require specialist access
- External ductwork routes
Facilities managers should always review the report alongside the certification to understand the scope of compliance.
8 Consider an independent audit if concerns remain
If facilities managers receive a cleaning report that includes “no access” observations or unclear documentation, it may be advisable to seek independent verification.
Rope Access 24 Seven offers a specialist independent audit service, carried out by qualified specialists, to assess the condition of ventilation systems and verify the results of previous cleaning work. This provides additional reassurance where compliance, safety or insurance considerations are involved.
9 Address access issues to ensure full system compliance
If a report identifies areas of no access, the next step is to resolve the access issue so that the entire system can be inspected and cleaned.
Solutions may include:
- Installing additional access panels
- Using specialist access methods
- Reassessing duct routes or system design
- Scheduling further inspection work
Resolving access limitations ensures that the entire ventilation system can be properly verified.
Common questions
What does “no access” mean in a duct cleaning report?
“No access” means the cleaning contractor was unable to inspect or clean that part of the duct system. The condition of that section cannot be confirmed.
Does certification cover areas marked “no access”?
No. Certification only applies to the sections of the system that were accessed, inspected and cleaned.
Why are micron readings important in ventilation reports?
Micron readings measure grease thickness inside ductwork and provide objective evidence that cleaning has reduced contamination to acceptable levels.
Why are schematic drawings included in ventilation cleaning reports?
Schematic drawings show the layout of the duct system and identify which sections were accessed, cleaned or require further work.
When to call Rope Access 24 Seven
If your ventilation cleaning report includes no access observations, Rope Access 24 Seven can help facilities and maintenance managers identify safe solutions to inspect and access difficult areas of ductwork.
Our specialist teams provide rope access duct solutions that allow high-level or complex ventilation systems to be safely inspected and accessed without disruptive scaffolding.
Rope Access 24 Seven can offer guidance, advice and practical solutions for addressing no access areas identified in ventilation cleaning reports. We also provide independent rope access audit inspections, carried out by qualified specialists, for organisations that require verification of previous cleaning results.
Rope Access 24 Seven is part of a specialist cleaning group of companies, including:
- Cater Clean 24 Seven – a specialist kitchen extract cleaning company capable of cleaning the entire kitchen extract system when access issues are resolved with rope access support.
- Clear Air 24 Seven – specialists in ventilation system cleaning and maintenance.
All services delivered across this group are carried out in accordance with NAAD21 guidance which establishes best practices for hygiene, fire safety and maintenance of ventilation systems and is linked to the National Occupational Standard for ventilation hygiene
📞 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.