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Hospital Flooring: Types and Infection-Control Rules

What CDC and NIH say about hospital flooring: carpet versus hard-surface floors, the FGI criteria, and why floor disinfection is not required.

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General information from public guidance, not medical, engineering or purchasing advice. A facility’s own infection-prevention and design teams make specification decisions.

Short answer

Hospital flooring is the floor covering and installation system specified for patient-care and support areas, chosen for infection control, cleanability, slip resistance, acoustics and durability. The CDC/HICPAC environmental infection control guideline does not ban carpet in general patient-care areas, but it strongly recommends avoiding it in high-traffic patient-care zones and where spills are likely, and it says disinfecting floors offers no advantage over regular detergent and water cleaning.

Definition and scope

The NIH Office of Research Facilities notes that flooring is one of the largest surfaces in hospitals, with significant impact on safety, infection control, appearance, maintenance, return on investment, clinical efficiency and patient outcomes (NIH Technical Bulletin Issue 98, March 2020). This guide covers acute-care hospital floors and the public guidance behind them. Laboratory floors have their own requirements, covered in laboratory flooring: resinous, sheet and biosafety requirements.

How hospital flooring is specified

NIH reports that flooring selection begins with the needs of the project, set out in the basis of design during the schematic design phase. It cites the Facility Guidelines Institute (FGI) Guidelines for Design and Construction of Hospitals and Outpatient Facilities, 2018 edition, as identifying the essential criteria. NIH lists them as follows:

  • Floor softness versus firmness; condition of the subfloor; performance under pressure
  • Pattern; contrast; reflectivity
  • Sound absorption; sound transmission
  • Cleanability; slip resistance; resistance to cleaning and disinfecting agents
  • Absorbency; smoothness
  • Monolithic construction; an integral coved wall base; sealed joints; transitions between flooring types

NIH also names ASTM F710-19e1, Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring, as the standard for substrate preparation, and notes that manufacturer installation requirements guarantee warranties when followed. Evidence-based design goals it cites from the Center for Health Design include fall protection, infection control, acoustics, indoor air quality, return on investment, reduced staff fatigue and patient satisfaction, alongside durability, warranty, life-cycle cost and maintenance.

How hospital floors are maintained

Are floors disinfected differently from other surfaces?

No special regimen is called for. CDC states that extraordinary cleaning and decontamination of floors in health-care settings is unwarranted: disinfection of floors offers no advantage over regular detergent and water cleaning and has minimal or no impact on health-care associated infections, and newly cleaned floors become rapidly recontaminated from airborne microorganisms and from shoes, equipment wheels and body substances. CDC adds that facilities may still choose an EPA-registered detergent/disinfectant on low-touch surfaces such as floors, because staff may find it hard to tell whether a spill contains blood or body fluids. The recommendation is to keep housekeeping surfaces such as floors visibly clean on a regular basis and clean up spills promptly (Category II). For disinfectant contact time and material compatibility, see surface disinfectant selection.

CDC lists wet mopping, wet vacuuming, dry dusting with electrostatic materials and spray buffing as methods for non-porous floors, and prefers methods that produce minimal mists, aerosols or dust dispersion. Hard-surface floors are cleaned on a regular basis, when soiling or spills occur, and when a patient is discharged. Bucket solutions become contaminated almost immediately.

Why maintenance chemistry and finish matter

NIH points to never-wax, matte-finish flooring as a way to avoid sticky high-gloss polish that attracts and holds dirt and microorganisms. It also notes that cleaning-chemical residue can harbor a biofilm, quoting CDC that bacteria within biofilms are up to 1,000 times more resistant to antimicrobials than the same bacteria in suspension (CDC Guideline for Disinfection and Sterilization in Healthcare Facilities, 2008, updated 2019).

Types and related concepts

Every row below traces to CDC or NIH. Neither source ranks products or brands, and none is ranked here.

Option What the source says Source
Hard-surface (non-porous) flooring Cleaned on a regular basis, when soiling or spills occur, and at patient discharge; wet mopping and wet vacuuming among the listed methods. CDC
Carpet Advantages: noise limiting, a “humanizing” effect, fewer falls and injuries, particularly for the elderly. Harder to keep clean after spills of blood and body substances, and harder to push wheeled equipment over. CDC
Carpet tile Contaminated tiles are replaced after a blood or body-fluid spill (Category IC, an OSHA interpretation under 29 CFR 1910.1030). CDC
Homogeneous resilient sheet Vertically monolithic material; selection is driven by considerations such as dropped knives and sharp objects. NIH
Heterogeneous resilient sheet Layers of backing, image and wear layer; preferable where aesthetics is the priority. NIH

NIH states that health care-associated infections can be mitigated by specifying either homogeneous or heterogeneous resilient floors in sheet form.

Where it matters for labs, clinics and supply decisions

CDC grades its carpet recommendations, which is more useful for specifiers than a blanket rule. Category IB means strongly recommended for implementation and supported by certain experimental, clinical or epidemiologic studies and a strong theoretical rationale.

CDC recommendation Grade
Avoid carpet in high-traffic zones in patient-care areas or where spills are likely (for example burn therapy units, operating rooms, laboratories and intensive care units) IB
Do not use carpet in hallways and patient rooms in areas housing immunosuppressed patients IB
Dry wet carpet thoroughly; replace carpet that remains wet after 72 hours IB
Spot-clean blood or body-substance spills on carpet promptly IC
Vacuum carpet in general patient-care areas regularly with well-maintained equipment designed to minimize dust dispersion II
Fungicidal or bactericidal carpet treatments No recommendation (unresolved issue)

CDC’s planning list for construction and renovation includes appropriate flooring, for example seamless floors in dialysis units, and sensible use of carpeting, avoiding it in special care areas or areas likely to become wet. For wider facility context, see the hospital patient safety plan, fall prevention program design and healthcare-associated infection definitions. Equipment ordering is covered in hospital and clinic equipment procurement policy.

Common misunderstandings

“Carpet is banned in hospitals.”

Not by this guideline. CDC found only limited epidemiologic evidence that carpet influences infection rates in areas housing immunocompetent patients, so it makes no recommendation against carpet there. It does recommend avoiding carpet in the zones listed above, and calls avoiding it prudent in laboratories, around sinks and in janitor closets.

“Floors must be disinfected to prevent infections.”

CDC found that floor disinfection offers no advantage over detergent and water cleaning for infection outcomes. A facility may still choose a detergent/disinfectant because of uncertainty about what a spill contains.

“The cleaning method does not matter once the material is chosen.”

CDC describes an aspergillosis outbreak in a hematopoietic stem cell transplant unit attributed to carpet contamination and a particular cleaning method. After a window was left open during a nearby building fire, the carpet was cleaned with a “bonnet buffing” machine that dispersed Aspergillus spores into the air. Wet vacuuming replaced the dry method and no further cases of invasive aspergillosis were identified.

“Treated carpet is protected.”

CDC offers no recommendation on fungicidal or bactericidal carpet treatments.

FAQ

What flooring do hospitals use?

CDC and NIH guidance discusses hard-surface resilient sheet flooring (homogeneous or heterogeneous) and carpet or carpet tile, with the choice depending on the area. Neither CDC nor NIH names a single required product.

What criteria do hospital floors have to meet?

NIH reports the FGI essential criteria: softness versus firmness, subfloor condition, performance under pressure, pattern, contrast, reflectivity, sound absorption and transmission, cleanability, slip resistance, resistance to cleaning and disinfecting agents, absorbency, smoothness, monolithic construction, an integral coved wall base, sealed joints and transitions between flooring types.

How should wet flooring in a hospital be handled?

For carpet, CDC recommends thorough drying and replacement if it remains wet after 72 hours (Category IB).

Sources

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