BioClad vs Altro Whiterock: Commercial Cladding Comparison
An engineering evaluation of active silver-ion antimicrobial PVC versus dense virgin polymer wall systems for UK food factories, cleanrooms, and high-care commercial facilities.
In UK commercial food manufacturing and cleanroom installations, BioClad and Altro Whiterock represent the two dominant semi-rigid PVC wall cladding specifications. The fundamental distinction is that BioClad incorporates BioCote silver-ion antimicrobial additives impregnated throughout the polymer matrix (actively reducing bacterial counts by 99.9%), whereas Altro Whiterock uses a dense, pore-free virgin PVCu formulation engineered for extreme mechanical durability, chemical resistance, and seamless thermoforming. Both systems achieve Class 0 fire ratings (BS 476 Parts 6 & 7), satisfy BRCGS Food Safety Issue 9 requirements when hot-gas welded, and cost between £85 and £145 per m² fully installed.
Head-to-Head Technical Specification Matrix
Comparison across core manufacturing standards, microbial testing metrics, joint detailing, and commercial investment parameters.
| Technical Parameter | BioClad Antimicrobial PVC | Altro Whiterock PVCu |
|---|---|---|
| Base Polymer Composition | Solid extruded semi-rigid PVC with integrated antimicrobial silver-ion additive | High-density semi-rigid virgin PVCu (non-porous polymer formulation) |
| Antimicrobial Mechanism | BioCote silver-ion technology impregnated throughout the 2.5mm sheet thickness | Dense, non-porous surface barrier (biocide-free, inhibits surface adherence) |
| Microbial Reduction Rate | Up to 99.9% reduction against E. coli, MRSA, Salmonella, and Listeria (ISO 22196) | Surface washdown release; bacterial control achieved via chemical sanitisation |
| Standard Sheet Dimensions | 2.5m x 1.22m & 3.0m x 1.22m (2.5mm standard commercial thickness) | 2.5m x 1.22m & 3.0m x 1.22m (2.5mm standard commercial thickness) |
| Fire Reaction Rating | Class 0 / Class 1 (BS 476 Parts 6 & 7) & EN 13501-1 B-s3, d0 | Class 0 / Class 1 (BS 476 Parts 6 & 7) & EN 13501-1 B-s3, d0 |
| Jointing Specifications | Hot-welded joint rod or 2-part mechanical PVC trim with silicone gasket | Hot-gas welded matching rod or 2-part two-piece PVCu dividing trims |
| Corner Forming Method | On-site thermoforming with heated line blankets (minimum 25mm curved radius) | On-site thermoforming with dedicated heat blankets (minimum 25mm curved radius) |
| Maximum Service Temperature | 60°C continuous (not recommended directly behind cooking ranges without stainless splashbacks) | 60°C continuous (requires stainless steel heat deflectors adjacent to cookers) |
| Chemical Resistance | Resistant to 10% sodium hydroxide, quaternary ammonium sanitizers, and dilute acids | Resistant to animal fats, organic food acids, detergents, and sodium hypochlorite |
| Indicative Installed Cost | £85 to £135 / m² (subject to substrate prep, thermoforming count, and welding) | £90 to £145 / m² (subject to substrate prep, joint system, and project scale) |
Chemical Resistance Against Common Factory Cleaning Regimes
Food processing environments require walls that survive daily chemical attack from caustic foams, peracetic acid rinses, and hot washdowns without surface embrittlement.
Sodium Hydroxide (Caustic Soda 10%)
BioClad: Excellent (No discolouration or surface degradation)
Altro Whiterock: Excellent (Unaffected by routine industrial CIP washdowns)
Lactic Acid (Organic Food Acid)
BioClad: Excellent (Resists milk, cheese, and fermented food contact)
Altro Whiterock: Excellent (Engineered specifically for food industry acid splash)
Sodium Hypochlorite (Chlorine Bleach 5%)
BioClad: Good (Minor gloss reduction over years; structural PVC unaffected)
Altro Whiterock: Good (Maintains surface integrity under standard disinfection concentrations)
Hot Water & Low-Pressure Steam (80°C Splash)
BioClad: Good (Intermittent splash resistant; avoid continuous direct nozzle blast)
Altro Whiterock: Good (Intermittent washdown resistant; requires perimeter heat deflectors near fryers)
When to Specify BioClad vs Altro Whiterock
Clear criteria for estates directors, facilities managers, and principal contractors selecting wall finishes for upcoming commercial tenders.
High-Care, Cleanroom & Clinical Environments
- Active Biocide Needed: Rooms where surface microbes must be continuously suppressed between scheduled sanitisation shifts (e.g. ready-to-eat food suites, infant formula facilities).
- Cleanroom Air Quality: Environments certified to ISO 14644-1 (Class 7 and Class 8) where bio-burden counts directly impact product batch sign-off.
- Antimicrobial Ceilings: Compatibility with BioClad matching antimicrobial ceiling panels and pre-formed PVC kerbing details.
Heavy Washdown, Wet Bays & Commercial Kitchens
- Extreme Mechanical Impact: Service corridors and washdown bays subject to heavy stainless steel trolleys, pallet trucks, and bin wash stations.
- Integrated Safety Flooring: Direct welding into Altro safety flooring with cove-former kerbing to form an unbroken floor-to-wall tanking membrane.
- Extensive Aesthetic Colour Options: Public-facing commercial cafeterias, bakeries, or retail washrooms requiring decorative architectural finishes (Altro Whiterock Chameleon or Satins range).
Frequently Addressed Cladding Enquiries
Clear answers regarding installation procedures, BRCGS audit readiness, and contractor delivery around live facility shifts.
What is the key technological difference between BioClad and Altro Whiterock?
The primary distinction lies in active versus passive hygiene. BioClad features BioCote silver-ion additives extruded throughout the full 2.5mm thickness of the panel, actively destroying 99.9% of microbes, bacteria, and mould spores on contact for the lifespan of the sheet. Altro Whiterock relies on an exceptionally dense, non-porous virgin polymer formulation that creates an impenetrable barrier, preventing microbial adherence and withstanding rigorous industrial chemical washdown protocols.
Which cladding system is better for BRCGS Food Safety Issue 9 audits?
Both systems comply fully with BRCGS Food Safety Issue 9 (Clause 4.4 on Building Fabric: Walls and Partitions) provided they are installed with thermoformed corners and sealed joints. BioClad provides an additional layer of active antimicrobial protection in high-care and high-risk production suites where airborne bio-burden is critical. Altro Whiterock is widely preferred in heavy-traffic processing corridors and washdown zones where physical impact and high-temperature cleaning regimes dominate.
Why is on-site thermoforming superior to plastic joint profiles?
Thermoforming uses electrically heated blankets to heat the sheet to approximately 130°C on site, bending it cleanly around internal and external corners with a continuous 25mm radius. This eliminates mechanical joint trims, silicone beads, and sharp crevices where moisture and bacteria (such as Listeria monocytogenes) can harbour during daily sanitation.
Can BioClad or Altro Whiterock be installed in operational food manufacturing plants?
Yes. Norfolk Building Group executes cladding packages around live production shifts using temporary airlock containment partitions, negative-pressure dust extraction, and HEPA air scrubbing. Adhesive curing and hot-gas joint welding are coordinated out of hours or during scheduled sanitation windows to ensure zero cross-contamination.
What substrate preparation is required before installing 2.5mm PVC cladding?
Substrates must be structurally sound, dry (under 75% relative humidity), and flat to within 3mm over a 2-metre straight edge. Concrete blockwork, sand-and-cement render, moisture-resistant plasterboard, and clean insulated sandwich panels are all suitable once primed with an acrylic primer and secured with two-part polyurethane structural adhesive.
What are typical supply and installation costs per square metre in the UK?
In current UK commercial contracting benchmarks, supply and installation for 2.5mm BioClad typically ranges from £85 to £135 per m², while Altro Whiterock ranges from £90 to £145 per m². Costs vary based on substrate rectification, the density of thermoformed corners, ceiling heights, and whether welded joints or two-part PVC trim profiles are specified.
Tendering for Food Factory Cladding or Cleanroom Works?
Norfolk Building Group supplies, thermoforms, and installs both BioClad and Altro Whiterock systems across East Anglia and nationwide, backed by direct senior management on site.