ISO 14644-1 Standards
An international standard specifically for classifying and controlling airborne cleanliness in cleanrooms
Pre – Post Build Deep Cleaning for Data Centres
Enabling services to prepare and facilitate the commissioning and operational handover of sites
Deep Cleaning for Data Centres
Scheduled pro-active cleaning services for live operational environments using low-risk cleaning methodologies designed to prevent disruption.
Critical Environment Cleaning
Live critical environments, adhering to strict access protocols, risk assessments, and method statements to ensure cleaning is completed safely and efficiently.
Data Centre Contamination Control
Effective contamination control to maintaining system performance, reducing downtime, and extending equipment lifespan
Data Centre Cleaning Nationwide
Supporting clients across the UK with multi-site infrastructure as well as individual critical facilities.
National Data Centre Cleaning
At Delotas Ltd, we help clients achieve and maintain the highest benchmark standards in cleanroom and data centre cleanliness. With over 20 years of experience, we provide specialist cleaning services across the UK, covering data centres, server rooms, and technical environments. Our team ensures compliance with the strictest international standards, including:
- ISO 14644-1 Cleanroom Standards – ensuring particle control and cleanroom integrity
- ASHRAE Data Centre Environmental and Cooling Guidelines – optimising airflow, temperature, and humidity management
- EU GMP Annex 1 (2022) – maintaining sterile and contamination-controlled environments
Our focus is on reliable, compliant, and high-quality cleaning solutions tailored to critical technical spaces.
Commercial Cleaning — Hampshire
Delotas offers dependable commercial cleaning for offices, industrial units, schools, clinics, and more
throughout Hampshire. Whether it’s regular maintenance or a one-off deep clean, our trained teams deliver
meticulous results.
Office Cleaning Hampshire
Helping businesses maintain clean, safe, and productive workspaces.
Industrial & warehouse Cleaning Hampshire
specialist industrial cleaning services across Hampshire for warehouses, manufacturing sites, and production facilities.
Medical Cleaning Hampshire
Supporting clinics, dental practices, healthcare centres, and specialist treatment facilities.
School & Education Cleaning Hampshire
Safe learning environments through professional school and education cleaning services.
End of Tenancy Cleaning Hampshire
Our deep cleaning service prepares properties for new tenants, ensuring high presentation
Carpet Cleaning Hampshire
Professional commercial carpet cleaning services across Hampshire, maintain clean, hygienic, and long-lasting flooring.
Gosport , Southampton, Portsmouth, Winchester, Basingstoke, Fareham, Andover, Eastleigh, Havant, Farnborough, Aldershot, Waterlooville
About Us
Based in Gosport, Hampshire, Delotas has grown into a specialist
technical cleaning provider trusted across the UK and Europe. Our
journey began in general facilities services, evolving into deep-
specialised cleaning backed by industry training, certifications, and
service excellence.
Why Choose Delotas
Delotas offers technical cleaning tailored to your environment, supported by highly trained technical hygienists and robust quality procedures.
We focus on:
Protecting sensitive
equipment and environments
Delotas Cleaning Solutions specialises in cleaning environments where the protection of sensitive equipment and controlled workspaces is critical. From data centres and technical facilities to medical and commercial environments, our cleaning services are designed to safeguard valuable infrastructure from dust, debris, and environmental contamination. Using specialist cleaning equipment, anti-static materials, and carefully controlled methodologies, we help organisations maintain safe, compliant, and fully operational environments while protecting high-value assets and maintaining performance standards.
Reducing
contamination risks and downtime
Contamination within critical and commercial environments can lead to equipment failure, reduced efficiency, and costly operational downtime. Delotas delivers structured cleaning programmes designed to minimise contamination risks through proactive maintenance and specialist deep cleaning services. By removing particulate build-up, improving airflow performance, and maintaining hygienic workspaces, our cleaning solutions help organisations reduce disruption, protect business continuity, and maintain safe working conditions for staff and customers.
Serving both
national and local customers
Delotas Cleaning Solutions supports both national organisations and local businesses with reliable, high-quality cleaning services tailored to each client’s operational requirements. Our nationwide capability allows us to deliver consistent cleaning standards across multi-site facilities, while our strong regional presence enables responsive and personalised service for local customers. Whether supporting large-scale data centre infrastructure or providing commercial cleaning services across Hampshire, Delotas delivers dependable cleaning solutions backed by experience and industry knowledge.
Delivering compliant, industry-standard cleaning processes
Delotas is committed to delivering cleaning services that align with recognised industry standards and best practice procedures. Our cleaning methodologies are developed to support regulatory compliance, workplace safety requirements, and environmental control standards, including ISO-aligned cleaning processes where required. Through structured training, quality assurance procedures, and specialist cleaning equipment, we ensure every cleaning programme meets professional industry expectations while supporting client audits, inspections, and operational compliance.
Certifications
Delotas offers dependable commercial cleaning for offices, industrial units, schools, clinics, and more
throughout Hampshire. Whether it’s regular maintenance or a one-off deep clean, our trained teams deliver
meticulous results.
How can we help?
Why Do I Need A Data Centre Deep Clean?
Did you know 65% of data centre and computer room problems are caused by environmental contamination but less than 5% of a typical data centre’s expenditure is allocated to hygiene and contamination prevention?
Particle and contamination build-up cause failures in electronic circuits within servers and hardware. Contamination causes servers to slow down or fail causing significant downtime which could be avoided by regular data centre cleans.
Many IT and Facilities Managers are unaware that equipment manufacturers’ warranties could be deemed void as a result of poor environmental conditions.
How Does Data Centre Deep Cleaning Prevent Downtime
The iHeat and contamination are two of the most common causes of failure for internal components of electronic computer equipment. Particulates brough into the facility can be carried into the hardware’s internal circuits through the air conditioning process. Specialist computer room cleaning services such as those provide by DELOTAS remove these particulates before they have a chance to infilitrate your equipment and thus significantly reduces the risk of hardware failure. IT downtime costs European firms 1 Million hours and €17bn a year. 75% of storage and hardware failures are caused by environmental factors – the investment in a structured programme of deep cleaning is negligible in comparison with this.
How Often Do I Need A Computer Room Clean?
ASHRAE recommends that Data Centers are cleaned a minimum of once a year but depending on what systems are in place it may have to be more frequent to ensure the recommended particle levels stipulated in ISO 14644-1 are met. It is advisable to have a surface clean every quarter as well as an annual deep-clean to maintain standards of cleanliness. If any construction work is done, a post-work deep-clean is always recommended.
What Standards Do Data Centre Cleans Need To Adhere To?
A Data Centre cleaning company must comply to ISO 14644-1 standards, which is the accepted standards for the management of contamination in clean rooms and Data Centers. ISO 14664-1 defines clean rooms standards from class 9 to 1, class 1 being the highest standard. The standards specify the maximum allowable particle concentrates from 0.1 to 5μm allowed in any particular class of clean room. It is recommended that Data Centre classes should be between Class 9 to Class 6. ASHRAE recommend a Data Centre class should be class 8.
‘We have been using Delotas to clean our primary Data Centre since 2013, after being left unimpressed by other cleaning specialists. This facility is now over 6 years old but still looks like new. For the past 4 years we have been contracting Delotas to clean our much older Secondary Data Centre and Main Equipment Rooms and have noticed a significant reduction in hardware failures in those areas that have been cleaned compared with those that have not. We look forward to working with Nathan over the next few years to clean our vast estate of switch rooms.
We have been using Delotas Cleaning Solutions for 8 years for our Data Centre Cleaning. We have always been impressed with their attention to details and care when operating in this Data Centre. I could not recommend them enough and anyone contracting them will see the benefits of using a company that works to such high standards.
I use Delotas for routine cleansing services for numerous business critical facilities and am reassured by their attention to detail and thoroughness of their services in maintaining operational status throughout and after the cleansing works. All of the operatives are friendly and professional in their approach for the work they carry out. Delotas also carry out a diverse range of other work packages, demonstrating their excellent ability to support through their delivery of work packages.
FESFM employed a company to carry out a data centre clean on a newly built project. Whom I dismissed from site due to bad practices and was left in a vulnerable situation. I then appointed Delotas to complete the Data Centre clean. I can only state that Delotas undertook the task and completed it beyond my wildest hopes and were so professional Southampton University employed them to carry out the cleaning of their university secondary Centre’s and all Data / Switch rooms. They carried out the Data Centre twice a year thereafter. I cannot stress enough how helpful and professional the Delotas team have been over the past 3 1/2 years and would have no hesitation in recommending them.
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