Criterion
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Typical units
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Primary fire rules
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EU marking route
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Acoustic priority
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Weight sensitivity
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Who reviews the file
Rigs, Platforms & Offshore Wind
Offshore Flooring
Offshore flooring is a compliance question before it is a material question. The covering itself may be the same vinyl, carpet or resin you would specify on a ferry — but the route that makes it acceptable depends on whether the unit is a ship under a flag or a fixed installation on a coastal state’s shelf, and the two routes hand you different paperwork.
This page sets out which rules apply where, how an A-60 deck build-up is actually assembled, what changes zone by zone in an accommodation module — and which screeds, deck coverings and insulation Trivaro supplies for offshore work across Europe.
A-60
Deck fire divisions
MODU
SOLAS-equivalent code
EU
B2B supply + documentation
IMOA-60NORSOK C-002
Floors that stay put offshore.
No Dry Dock Next Door
What Makes an Offshore Floor Different
An offshore floor carries the same fire and slip duties as a ship's floor, then adds the consequences of being hours from shore with a fixed crew change window. Six pressures shape the specification.
Fire divisions come first
A-class deck and bulkhead ratings decide the build-up before aesthetics enter the conversation. The rating belongs to the whole construction, and the certificate names a system — not a single product.
Two regulatory routes
Mobile units follow SOLAS and the MODU Code. Fixed installations answer to the coastal state — and on the Norwegian shelf, to NORSOK. Same materials, different certificate set.
Weight is a design budget
Every kilo of floor build-up is topside weight. Screed density and floating-floor construction are selected against a kg/m² allowance, which is why lightweight mineral screeds exist at all.
People live above machinery
Cabins sit over pumps, thrusters and generators on rotation-length stays. Impact and structure-borne sound are handled in the floor, by decoupling rather than by mass alone.
Maintenance windows are rare
There is no closing the floor for a week. Systems are chosen for service life and for repairability in short windows with the unit working around them.
Salt, oil and washdown
Exterior decks and machinery spaces take seawater, hydrocarbons and pressure cleaning. Corrosion protection under the covering matters as much as the covering.
Mobile Unit vs Fixed Installation vs Offshore Wind Vessel
Rule of thumb: if it has a flag, specify it like a ship. If it stands on the seabed, specify it to the coastal state's regime. The fire-tested materials overlap almost completely — the documentation does not.
Mobile Offshore Unit
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Drilling rigs, semi-subs, jack-ups, FPSOs
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SOLAS II-2 via the IMO MODU Code
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MED / wheelmark where EU-flagged
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High — permanent crew accommodation
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High on topsides and upper decks
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Flag administration and class society
Fixed Installation
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Production platforms, substation topsides
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Coastal state offshore regime; NORSOK on the NCS
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Not a ship — no wheelmark route
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High where manned, low where visited only
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High — every kilo is topside weight
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Operator and national safety authority
Offshore Wind Vessel
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SOVs, CTVs, cable-lay and installation vessels
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Ordinary SOLAS Chapter II-2 — it is a ship
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MED / wheelmark where EU-flagged
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Very high — rotation crews sleep aboard
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Moderate — naval-architect driven
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Flag administration and class society
Offshore Deck Systems We Supply
A deck build-up is a stack, and we supply it as one: corrosion protection, levelling or insulating layer, then the walking surface. Tell us the deck's job and its fire class — we return the system.
Mineral Levelling Screeds
- Where: accommodation decks, corridors, any steel deck needing a flat, sound base
- Type: the TEFROTEX range — pumpable mineral screeds across a wide density band, so the weight allowance drives the choice
- Earns: a level, fire-classified base at the lowest kg/m² the deck can accept
A-60 Floating Floors
- Where: decks carrying an A-60 division, cabins over machinery, noise-critical spaces
- Type: the TEFROLITH systems including FF-STEEL, the decoupled construction that also delivers impact sound reduction
- Earns: the fire division and the acoustics in one certified build-up — see the A-60 floating floor guide
Epoxy & Polyurethane Deck Coverings
- Where: machinery spaces, workshops, galleys, wet rooms, technical areas
- Type: the TEFROKA programme — primer, coating, quartz broadcast and sealer as a system; rigid epoxy or elastic polyurethane
- Earns: a seamless, chemically resistant floor with the slip profile the space is audited against
Comfort & Acoustic Resin Floors
- Where: accommodation circulation, mess rooms, control rooms
- Type: TEFROfloor PU COMFORT H and the wider polymer deck coverings family
- Earns: a resin floor that is quieter and kinder underfoot than a rigid coating
Synthetic Teak for Exterior Decks
- Where: walkways, external stairs, exposed decks and boat landings
- Type: TEFROteak — a liquid-applied deck system, no timber to maintain
- Earns: grip and appearance outdoors without the upkeep cycle of laid teak
Stone Wool Insulation & Corrosion Primers
- Where: inside A-class constructions; steel preparation under every system
- Type: ROCKWOOL SeaRox marine stone wool, and TEFROcor corrosion-protection primers
- Earns: the non-combustible core of the fire division, and steel that lasts under the floor
Specify an Offshore Project with Trivaro
A zone list and the unit's legal character are enough to start. No public price list — every offshore package is quoted on the systems and quantities it actually needs.
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Tell us what the unit is
Ship under a flag or fixed installation, the shelf it works on, and the fire divisions in play. That settles the certificate route before any material is chosen — and stops a late surprise at file review.
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Zones, areas and weight allowance
Deck areas by zone in m², the kg/m² budget on topsides if one is set, acoustic requirements over machinery, and any operator or NORSOK requirement to meet. Drawings help but are not needed to start.
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System proposal, then quotation
A recommended build-up per zone with datasheets and certificates for the file, followed by a B2B quotation and delivery schedule across Europe from our Estonian warehouse.
Related Reading
The certification and build-up detail behind an offshore floor.
IMO/MED certification explained↗
What IMO and MED approval actually covers, who issues it, and how to read a certificate.
A-60 floating floors↗
The six-layer build-up, SOLAS limits and the systems that achieve an A-60 deck.
Floating floor weight & build-up↗
Indicative kg/m² by system family and how to read weight off a datasheet.
Marine deck coverings↗
The full catalogue of screeds, resin coverings, insulation and primers.
Offshore Flooring — Frequently Asked Questions
What operators, yards and offshore contractors ask when scoping a deck package.
01 Does IMO certification apply to offshore flooring?
It depends on what the unit is. Mobile offshore units — drilling rigs, semi-submersibles, jack-ups, FPSOs, SOVs and CTVs — are registered under a flag and follow the ship route: SOLAS Chapter II-2 and the IMO MODU Code, which provides a standard of safety equivalent to that required by SOLAS for conventional ships. Fixed installations are not SOLAS ships; their flooring answers to the coastal state’s offshore regime, and on the Norwegian Continental Shelf that is where NORSOK standards apply. In practice the same fire-tested materials serve both routes — what changes is the certificate set you hand over.
02 What is an A-60 deck on an offshore unit?
A-60 is a fire division class: a steel deck or bulkhead insulated so the unexposed side stays within defined temperature limits for 60 minutes of a standard fire test. A-class divisions are defined in SOLAS regulation II-2/3 and carried into the MODU Code, so the same language is used on rigs and on ships. On a deck the rating belongs to the complete build-up — steel plate, insulation, screed or floating floor, final covering — never to one product alone, which is why an approval certificate always names a system. Detail in our A-60 guide and the A-60 vs B-15 comparison.
03 What flooring goes in offshore accommodation modules?
Living quarters are specified much like a ship’s accommodation block: a levelling screed or floating floor over the steel deck, then an IMO fire-tested covering — homogeneous or heterogeneous vinyl, LVT or marine carpet — chosen for wear, cleaning and acoustics. Cabins over machinery or above other occupied decks take an acoustic build-up. Galleys, laundries and sanitary spaces move to welded slip-resistant systems or resin coatings. On fixed Norwegian installations, NORSOK C-002 additionally governs the architectural components around the floor: doors, bathroom units, barriers and signage.
04 Which flooring is used on offshore wind vessels and substations?
Service operation vessels and crew transfer vessels are ships, so their interiors follow the ordinary SOLAS and MED route — fire-tested coverings, acoustic build-ups in cabins because rotation crews sleep aboard, slip-resistant systems in galleys and wet areas. Offshore substation topsides are usually unmanned or only visited, so the emphasis shifts to electrical-room floors, walkability, corrosion protection and coatings that survive years between maintenance visits rather than to comfort and acoustics.
05 Do you supply resin and epoxy floors for offshore decks?
Yes. We supply the GTF Freese marine programme — epoxy and polyurethane deck coverings and coatings, quartz-broadcast build-ups, synthetic teak for exterior decks, mineral levelling screeds and corrosion-protection primers — plus ROCKWOOL SeaRox stone wool for insulating and A-60 constructions. Resin choice follows the deck’s job: rigid epoxy where mechanical and chemical load dominate, elastic polyurethane where movement, comfort or impact sound matter.
06 Can you supply an offshore project without installing?
Yes — we are a materials supplier, and most offshore work reaches us as a materials package for the yard’s or operator’s own contractor. We quote per system and zone, deliver across Europe from our Estonian warehouse, and supply the certificates and datasheets the classification or authority file needs. Where a project wants it, installation by certified teams can be arranged separately.
Specifying an Offshore Deck Package?
Trivaro supplies offshore deck systems across Europe — mineral screeds, A-60 floating floors, epoxy and polyurethane deck coverings, synthetic teak, stone wool insulation and corrosion primers — with the certificates and datasheets your classification or authority file needs.
Tell us whether the unit is flagged or fixed, the zones and areas, and any weight or acoustic limit — we respond with a recommended build-up per zone and a B2B quotation.
