Ireland: A European Data Centre Hub
Ireland hosts over 127 data centres with more under construction or in planning. Dublin alone accounts for approximately 25% of all European hyperscale data centre capacity. Amazon Web Services, Microsoft Azure, Google Cloud, Meta, Equinix, Interxion (Digital Realty), and dozens of colocation providers operate facilities across Ireland. This concentration makes Ireland one of the most important data centre markets in Europe — and creates a growing demand for specialist data centre cleaning services.
Data centre cleaning is fundamentally different from any other type of commercial cleaning. The environment is controlled: temperature, humidity, and air quality are maintained within strict parameters. Introducing standard cleaning chemicals, fibrous mops, or unfiltered vacuums would contaminate the very environment you are trying to protect. Data centre cleaning requires HEPA-filtered equipment, anti-static products, ESD-safe procedures, and operatives who understand the sensitivity of the environment they are working in.
Optus Glean provides specialist data centre cleaning for hyperscale facilities, colocation centres, enterprise server rooms, and communications rooms across Ireland. Our teams use industrial-grade HEPA equipment and follow ASHRAE guidelines for data centre contamination control.
Data Hall Cleaning
The data hall is where racks, servers, storage, and networking equipment are housed. Every surface in the data hall must be kept free of particulate contamination. Our data hall cleaning covers:
- Raised floor tiles: HEPA-vacuumed top surface, tile edges, and grommets
- Rack exteriors: front doors, side panels, and top surfaces HEPA-vacuumed and anti-static wiped
- Cabinet tops: dust removal with HEPA vacuum (never compressed air)
- Perforated floor tiles: HEPA-vacuumed to clear blocked perforations that restrict airflow
- Hot and cold aisle containment structures: curtains, doors, and frame surfaces wiped
- Cable management: overhead cable trays and vertical cable management dusted
- Fire suppression equipment: external surfaces of detection panels and nozzle housings wiped
- Lighting: light fittings and diffusers cleaned
Critical rule: We never use compressed air, standard household vacuums, spray chemicals, or fibrous cleaning materials in a data hall. All equipment is HEPA-filtered to 0.3 microns. All wipes are anti-static and lint-free. All chemicals are data-centre-approved, non-residue formulations.
Subfloor Cleaning
The raised floor void (subfloor) is the hidden contamination risk in every data centre. Dust, construction debris, cable jacket particles, and zinc whiskers accumulate in the subfloor over time. When disturbed by airflow changes or maintenance activity, these particles become airborne and are drawn into IT equipment by server fans. The result can be overheating, short circuits, or hardware failures.
Our subfloor cleaning process is methodical and non-disruptive. Floor tiles are lifted in controlled sections using suction lifters (never pry bars, which damage tiles and generate particles). The subfloor void is HEPA-vacuumed, including the underside of tiles, pedestal tops, cable trays, and cable bundles. Each section is cleaned, inspected, and tiles are returned to their exact original positions before moving to the next section. Airflow patterns are preserved throughout.
Ancillary Area Cleaning
- Meet-me rooms and cross-connect areas: HEPA-vacuumed, patch panels wiped
- UPS and battery rooms: floor cleaning, equipment exterior wiping (non-conductive products)
- Generator rooms: floor cleaning, equipment exterior wiping
- Loading docks and staging areas: sweeping, mopping, contamination barrier maintenance
- Offices and NOC (Network Operations Centre): standard office cleaning
- Washrooms and break rooms: standard commercial cleaning
- External areas: car parks, pathways, entrance areas
Data Centre Cleaning Pricing
| Service | Price Range | Notes |
|---|---|---|
| Server room clean (10-20 racks) | €2,000 – €4,000 | Full clean including floor |
| Data hall clean (50-200 racks) | €4,000 – €8,000 | Data hall, ancillary, offices |
| Hyperscale hall clean (200+ racks) | €8,000 – €15,000+ | Full scope, method statement based |
| Subfloor cleaning (add-on) | +30–50% | Tile lifting, void cleaning, inspection |
| Monthly maintenance clean | €800 – €3,000 | Between full cleans, high-touch focus |
| Particle counting survey | €500 – €1,500 | Baseline and post-clean measurement |
Note: All data centre cleaning is priced individually following a site survey and agreed method statement. Pricing depends on rack count, facility age, contamination level, and access restrictions.
Post-Construction and Commissioning Cleans
New data centres and facility expansions require a specialist post-construction clean before IT equipment is installed. Construction generates enormous quantities of dust, concrete particles, metal filings, and packaging debris that, if not removed completely, will contaminate equipment from day one. Our post-construction clean for data centres follows a phased approach: initial gross debris removal, detailed HEPA cleaning of all surfaces including subfloor, particle counting to verify cleanliness levels, and a final inspection before handover. This clean is typically specified in the building contractor's scope of work and must be completed to ASHRAE contamination standards before the facility can be energised.
Serving Data Centres Across Ireland
With 127+ data centres currently operational in Ireland and more in the pipeline, the demand for specialist data centre cleaning is growing. Optus Glean serves colocation providers, hyperscale operators, enterprise data centres, managed hosting providers, telecommunications facilities, and corporate server rooms. Our teams operate under NDA, comply with security clearance requirements, and can work within hot/cold aisle containment environments, secure cages, and restricted access zones.
Frequently Asked Questions About Data Centre Cleaning
How much does data centre cleaning cost in Ireland?
Data centre cleaning costs €2,000–€15,000+ per clean depending on size. A small server room (10–20 racks) is €2,000–€4,000. A medium data hall (50–200 racks) is €4,000–€8,000. A hyperscale hall is €8,000–€15,000+. Subfloor cleaning adds 30–50%. Most facilities schedule 2–4 full cleans per year with monthly maintenance between.
Why do data centres need specialist cleaning?
Airborne particles cause equipment overheating, reduced lifespan, increased energy costs, and short circuits. Zinc whiskers can cause catastrophic failures. Standard cleaning introduces contaminants. Data centre cleaning uses HEPA-filtered vacuums, anti-static wipes, and controlled agents to remove contaminants without introducing new ones.
How do you clean raised floors in data centres?
Two phases: top surface HEPA-vacuuming of tiles, then section-by-section tile lifting for subfloor void cleaning. Cable trays, pedestal tops, and tile undersides are all HEPA-vacuumed. Tiles are tracked and returned to original positions. Airflow patterns are maintained throughout. Compressed air is never used.
What is zinc whisker contamination?
Zinc whiskers are microscopic conductive filaments that grow from zinc-plated floor components. When airborne, they can enter IT equipment and cause short circuits, hardware failures, or fires. They are a known risk in pre-2005 facilities but can occur in newer builds. Our cleaning includes inspection and HEPA removal of zinc whisker contamination.
How often should a data centre be cleaned?
ASHRAE recommends a minimum of every 6 months. Most Irish data centres schedule quarterly cleans with monthly maintenance. Subfloor cleaning is annual or bi-annual. Particle counting between cleans determines optimal frequency. Facilities near construction or roads may need more frequent cleaning.
