Grease Reduction & Savings
High Profile
Steak House
Comparing grease accumulation before and after the application of RZ-Ecoseal demonstrates the significant impact the Clean, Seal & Maintain approach can have on a commercial kitchen extract system.
Reduction in Grease Accumulation
Following application of RZ-Ecoseal, recorded daily grease accumulation reduced from 7.7 microns per day to just 2.6 microns per day.
Daily recorded grease accumulation following application.
Daily grease accumulation recorded prior to application.
The measured data indicated a significant extension in the time taken to reach the non-compliance threshold.
Before vs After
After Application
Significantly reduced daily grease accumulation following RZ-Ecoseal application.
The measured rate indicated a much longer period before the non-compliance threshold would be reached.
Slower grease build-up helps support a cleaner and more manageable kitchen extract system.
Before Application
Significantly higher daily grease accumulation was recorded before RZ-Ecoseal application.
The non-compliance threshold was being approached considerably more quickly.
Higher accumulation rates can result in more frequent cleaning and ongoing maintenance requirements.
Grease Accumulation
Recorded average micron accumulation per day
in recorded grease accumulation
What Does This Mean in Practice?
In this case study, the application of RZ-Ecoseal was followed by a substantial reduction in the rate at which grease accumulated within the commercial kitchen extract system.
Slower accumulation can help extend the period between intensive cleaning requirements, reduce ongoing maintenance demand and support a cleaner and more sustainable approach to kitchen extract management.
Could RZ-Clean-Seal Work For Your Sites?
Speak to our team to understand how the Clean, Seal & Maintain approach could help reduce grease accumulation and ongoing kitchen extract maintenance requirements across your estate.
Speak To Our TeamReduced Grease Levels
Recorded grease readings show a significant long-term change in accumulation levels following the introduction of the RZ-Clean-Seal approach, alongside a substantial reduction in annual kitchen extract cleaning costs.
Grease Levels Fell Dramatically
Recorded grease levels fell from 4.8 in November 2024 to just 0.5 by September 2025, with the same low reading maintained again in November 2025.
The recorded grease level at the beginning of the period shown.
The lowest recorded grease readings during the period shown.
The latest reading shown remains substantially below the earlier recorded levels.
Grease Level Trend
The readings below show how grease levels changed across the recorded cleaning dates.
| Date of Clean | Level of Grease |
|---|---|
| November 24 | 4.8 |
| December 24 | 3.3 |
| January 25 | 3.6 |
| February 25 | 2.9 |
| March 25 | 3.3 |
| April 25 | 3.8 |
| May 25 | 3.3 |
| September 25 | 0.5 |
| November 25 | 0.5 |
| February 26 | 1.0 |
The Financial Difference
The reduction in cleaning requirements also creates a substantial change in annual maintenance expenditure.
Per year
Initial investment
Per year
Payback period: 1 year
Per year
The example cleaning cost reduces from £8,800 per year to £3,600 per year, while the RZ-Ecoseal investment shown is £4,250.
Lower Grease. Lower Cost.
The recorded micron readings demonstrate a substantial reduction in grease levels over the period shown. The lowest readings of 0.5 were recorded in both September and November 2025.
Alongside the change in grease accumulation, the site's annual cleaning cost shown reduces from £8,800 to £3,600, producing an annual saving of £5,200.
What Could Your Sites Save?
Speak to our team about your current kitchen extract cleaning programme and find out how RZ-Clean-Seal could help reduce grease accumulation and ongoing maintenance costs across your estate.
Speak To Our TeamHigh Profile
Burger Chain
New sites have their kitchen extract systems sealed before opening, helping to prevent grease from adhering to internal surfaces and supporting fewer cleans and a safer environment going forward. A daily micron reading of 0.2 µm means a system may only need cleaning every 12 months.
Lower Daily Grease Build-Up
Compared with the 1.6 µm average daily build-up of an uncoated system, the Barnet RZ-Ecosealed site recorded just 0.2 µm per day, while the Enfield site recorded 0.6 µm per day.
Daily micron build-up recorded at the Enfield site following RZ-Ecoseal application.
Daily micron build-up recorded at the Barnet site following RZ-Ecoseal application.
Average daily grease build-up recorded when kitchen extract systems are left unsealed.
Site Comparison
Enfield
Daily grease build-up recorded following RZ-Ecoseal application.
Recorded daily micron build-up was 62% lower than the average uncoated system.
Lower daily build-up supports a cleaner and more manageable kitchen extract system.
Average Uncoated
Average daily grease build-up when the kitchen extract system is left unsealed.
Grease can adhere more readily to untreated internal duct surfaces.
Faster accumulation can result in more frequent cleaning requirements.
Daily Micron Build-Up Comparison
Recorded micron accumulation per day
daily grease build-up following RZ-Ecoseal application
What Does This Mean in Practice?
This case study demonstrates the benefit of sealing new kitchen extract systems before the site begins trading. By treating the internal surfaces with RZ-Ecoseal, the rate at which grease adheres and accumulates within the extract system can be significantly reduced.
Lower daily grease accumulation can help extend cleaning intervals, reduce ongoing maintenance requirements and support a cleaner and safer approach to kitchen extract management across multiple sites.
Could RZ-Clean-Seal Work For Your Sites?
Speak to our team to understand how sealing commercial kitchen extract systems could help reduce grease accumulation, extend cleaning intervals and lower ongoing maintenance requirements across your estate.
Speak To Our TeamSavings Over Five Years
Using an example current kitchen extract cleaning cost of £2,600 per year, the difference over a five-year period demonstrates the potential financial impact of moving to the RZ-Clean-Seal approach.
A Dramatic Reduction in Maintenance Spend
Over five years, the example maintenance cost reduces from £13,000 without RZ-Clean-Seal to £4,875 with RZ-Clean-Seal.
The example annual kitchen extract cleaning spend before introducing RZ-Clean-Seal.
Example total maintenance cost across the five-year comparison period.
Five years of the existing £2,600 annual cleaning cost.
Five-Year Cost Comparison
Equivalent to a 62.5% lower five-year cost in this example.
Where The Saving Comes From
Reduced Grease Build-Up
RZ-Ecoseal is designed to reduce the rate at which grease accumulates within the kitchen extract system.
Longer Cleaning Intervals
Slower grease accumulation can allow the period between intensive kitchen extract cleans to be extended.
Lower Ongoing Costs
Fewer intensive cleans can significantly reduce long-term maintenance expenditure across the life of the system.
Imagine The Impact Across An Estate
The financial benefit becomes even more significant when the same approach is applied across multiple commercial kitchen locations.
Figures shown are an illustrative example based on a current annual cleaning cost of £2,600 and the assumptions used in this five-year comparison. Actual costs, cleaning frequencies and savings will vary depending on each site and extract system.
What Could Your Sites Save?
Speak to our team about your current kitchen extract cleaning programme and discover the potential long-term financial impact of the RZ-Clean-Seal approach.
Speak To Our Team