BIODEX HB - Water based ELASTOMERIC AntiBacterial & ANTIMICROBIAL Coating

BIODEX HB membrane is a high build surface coating formulated to meet the needs of every hygiene sensitive environment. It is applied to walls and ceilings to prevent the growth of mould and bacteria in food preparation or production areas, brewing and beverage industries, hospitals, the pharmaceutical industry and in kitchens or bathrooms. BIODEX HB membrane is manufactured in a wide range of attractive colours for high quality, durable decoration even in conditions of high humidity or extremes of temperature.

Advantages of Biodex HB

  • Long lasting with complete in-film protection throughout the life of the applied coating.
  • Effective against a wide variety of micro-organisms whilst being totally non-toxic.
  • Single pack, water-based formulations with no flash point and very low odour.
  • Permanently elastomeric nature accommodates thermal movement without cracking, flaking or splitting.
  • Low hazard, water based products. Equipment easily cleaned with water.
  • Inherently vapour permeable to allow substrates to breathe and dry out without blistering, whilst preventing water ingress even during regular cleaning.
  • High opacity gives excellent obliteration to cover underlying colours.
  • Easily reinforced locally over cracks and joints, or overall to effectively seal crazed surfaces.
  • Low maintenance coatings, easy to clean and refurbish.
  • Available in a wide range of attractive colours (see the Biodex Colour Guide).

Product Description

BIODEX HB is a resin-rich biostatic coating / paint that benefits from the latest encapsulated protectant technology to give completely safe use and zero leaching into the surrounding environment. This latest generation of in-film protection allows for the ultra slow controlled release of active ingredients into the coating film throughout the long life. Utilising the most modern chemistry, BIODEX HB membrane effectively prevents the growth of mould and bacteria whilst forming a totally non-toxic film which does not taint items stored in close proximity. The advanced styrene acrylic micropolymer resin binder cross links to give excellent adhesion which will be unaffected in conditions of elevated humidity. BIODEX HB coating is vapour permeable, and the elastomeric nature facilitates movement in the substrate, thus bridging hairline cracks to give outstanding durability. BIODEX HB coating can be reinforced either locally or overall to accommodate higher levels of substrate movement.

BIODEX HB is particularly suitable for substrates that are subject to movement. It has an elongation at break point of 519% at 200µm DFT and has a matt finish. It is a high build surface coating formulated to meet the needs of every hygiene sensitive environment. It can be used as a coloured embedment, intermediate, and top coat for walls and ceilings to prevent the growth of mould and bacteria. BIODEX HB coating is manufactured in a wide range of attractive colours for high quality, durable decoration even in conditions of high humidity or extremes of temperature. It is suitable for use in all HTM 56 categories (Healthcare, Food & Beverage, Pharmaceutical, Leisure, Food Retail, Prisons, General Industrial).

Within Healthcare BIODEX HB is suitable for use in:

Category 1 - Operating Rooms, Aseptic Rooms
Category 2 - Food Pepration Areas, Laundry
Category 3 - Sterilising Rooms, Utility Areas, Post Operative Recovery Area, Corridors
Category 4 - Bathrooms
Category 5 - Wards, Reception Areas
Category 6 - Changing Rooms, Offices

Technical Data (Typical)

Product Uses Pack Size Thickness Performance Pack Yield (approx)
Biodex HB

High build, highly flexible biostatic matt finish coating with encapsulated biocide technology.

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15 litres 1st Coat 250-333µm
2nd Coat 250-333µm
Overall DFT=250-333µm

Elongation At Break (unreinforced): BS903 Part A2 519% at 200µm DFT.

Accelerated Weathering: EN 1062-11: No blistering, cracking or flaking after 3000hrs QUV-B weathering.

Water Vapour Transmission (V): BS EN ISO 7783-2:1999 Class I <5m equivalent air layer thickness.

Fire Properties: In compliance with BS476 Part 6 & Part 7.


0.25-0.33 litres/m²/coat
3-4m²/litre/coat
15 litres covers
22.5-30m²

Resistance to Mould, Fungus, Bacteria Algae 

BIODEX HB has been subjected to Resistance Tests to ensure resistance and in-film protection properties, to confirm the Biostatic nature.

Test methods and challenge micro-organisms include:

  • Mould/Fungi (Film Fungal Preservation Test - Cabinet Method)
    Challenge micro-organisms are:
  Alternaria alternata Phoma violacea
  Aspergillus versicolour Rhodotorula rubra
  Aureobasidium pullulans Sporobolomyces roseus
  Cladosporium cladosporoides Stachyboytrys chartarum
  Penicillium purpurogenum Ulocladium atrum
  • Bacteria (Wet State Bacterial Resistance Test)
    Challenge micro-organisms are:
  Aeromonas hydrophila Klebsiella pneumonia
  Alcaligenes faecalis Proteus vulgaris
  Cellulomonas flavigena Providencia rettgeri
  Corynebacterium ammoniagenes Pseudomonas aeruginosa
  Enterobacter aerogenes Pseudomonas stutzeri
  Escherichia coli Serratia liquefaciens
  • Algae (Vermiculite Bed Method)
    Challenge micro-organisms are:
  Chlorella emersonii Gloeocapsa sp.
  Nostoc commune Pleurococcus sp.
  Stichococcus bacillaris Stigeoclonium tenue
  Trentepohilia auerea Trentepohlia odorata
  • General Growth Resistance (bacterial, mould/yeasts)
    In this test, a range of micro-organisms are assessed using selective nutrient beds to ensure no microbial growth. The test includes resistance to both aerobic and anaerobic (sulphate-reducing) bacteria.

For more detailed product information download:

Biodex HB Technical Data Sheet
Biodex HB Safety Data Sheet
Biodex HB Colour Guide