
Ensure Long-Term Performance of Your NORDISK RAT Blockers and have all external proofing checked by a qualified engineer for a fee of £200 + vat (£240)
NORDISK RAT blockers are precision-engineered from high-grade stainless steel and designed to last a lifetime — when maintained correctly.Pestprooflondon will guarantee the Nordisk valve if it is serviced annually.
Regular maintenance is therefore essential, as recommended by both the manufacturer NORDISK Innovation and Pest Proof London, the approved installer.
Also all external proofing to see if any damage has occurred from a rodent attempt to pass, can be repaired.
WHY REGULAR SERVICING MATTERS
Once installed, a RAT blocker becomes a vital part of your pest defence strategy and wastewater infrastructure.
Without periodic inspection and cleaning, materials such as fats, grease, and debris can build up and hinder movement.
Environmental factors — like root intrusion or gradual displacement — can also affect the unit’s performance over time.
Pest Proof London recommends annual servicing of all valves, alongside a proofing inspection to check for any signs of rodent activity or damage to external barriers.


Benefits of regular maintenance
- Maintains optimal valve performance and hygiene
- Prevents blockages and flow restriction
- Extends the service life of your rat blocker
- Ensures your proofing system continues to provide full protection
The RAT Valve Servicing Process
Our maintenance service follows a seven-step process to restore your RAP valve to “as new” condition:

Inspection and Assessment
Identify any obstructions or performance issues caused by accumulated fat, grease, or debris.

Degreasing Treatment
Apply a high-strength degreasing foam to break down stubborn build-up and restore full movement.

Deep Cleaning
Use a pressure washer to flush out dirt and debris from all crevices. The manhole void is also thoroughly cleaned.

Lubrication
Treat flap hinges with a water-displacement lubricant to ensure smooth operation and prevent corrosion.

Servicing & Restoration
Clean and restore the valve to its original working condition, ready for another year of reliable protection.

Reinstallation & Testing
Treat flap hinges with a water-displacement lubricant to ensure smooth operation and prevent corrosion.
SERVICE PROGRAMME
- Safeguard your drainage system
- Check external proofing
- Maintain effective rodent protection
- Prevent unnecessary blockages
- Ensure long-term reliability and peace of mind
Book a survey:
To schedule a service or request availability please contact us at 020 3858 9902 or email Lee@pestprooflondon.co.uk

GET IN TOUCH
If you require rat proofing in London, please get in touch with us today. One of our trained staff members will be able to talk you through the next steps.
You can call us on 0203 858 9902 or fill out the form below
