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Commercial & Industrial Frost Protection

Frost Protection Systems - Engineered for UK Commercial Buildings

What is Frost Protection?

Why frost protection is a system decision, not a product purchase

Frost protection in a commercial context is the engineered management of surface and pipe temperatures at or below freezing - to prevent structural damage, operational disruption, safety incidents, and liability exposure. Every application has different substrate conditions, heat loss characteristics, exposure profiles, and duty-of-care implications. These differences determine the technology, the power output, and the control strategy required.

The risks that unprotected commercial buildings face in a UK winter are concrete and specific:

Pipe bursts

Water ingress, structural damage, and operational shutdown; compounded by extended closures (Christmas, annual shutdowns)

Slip and fall liability

Occupiers' Liability Act 1984; HSE duty of care for employee access routes and commercial premises open to the public

Snow load accumulation

Structural loading on flat and low-pitch roofs beyond design threshold; particularly acute on older structures

Gutter and downpipe blockage

Overflow, gutter collapse under ice weight, and icicle formation creating public safety hazards below

Vehicle incidents on ramps

Iced inclined surfaces are an elevated liability risk due to geometry and confined space

Legionella risk

Hot water pipes that cool below 50°C enter the bacterial growth band (20– 45°C), a regulatory compliance obligation under HSG274

Each of these risks has a technically specific solution. Choosing the wrong product - or specifying nothing at all - carries a measurable commercial cost. ARC's role is to identify the correct system for your building and specify it correctly from the outset.

Stair & Entrance Heating

Electric heating for outdoor staircases, entrance platforms and steps. Custom-made mats for new build and retrofit. No structural alteration required.

Cost of Getting It Wrong

UNDER-SPECIFIED SYSTEM:

Power density too low to clear snow under UK design conditions, or a product applied to an incompatible substrate. Consequence: the surface ices regardless of the installed system. Liability exposure remains. Installation costs are sunk and unrecoverable from a system that fails to perform when conditions demand it.

NO CONTROL SYSTEM:

A frost protection system running continuously from October to April consumes electricity for thousands of hours. The absence of a dual-parameter control system - one that activates on both temperature AND moisture - is not a specification decision. It is a recurring operational cost that can exceed the system installation cost within four to five heating seasons.

WRONG SUBSTRATE SELECTION:

Every heating mat and trace heating cable in the ETHERMA range has defined substrate compatibility. Installing a product not rated for a surface - or not rated for the application temperature of mastic asphalt - results in installation failure, voided warranty, and the requirement to resurface and reinstall at full cost. The substrate is specified first. The product follows.

ETHERMA eFROST portal.

eFROST Controls - Introduction

Intelligent control - heating only when it's needed

The eFROST control system activates frost protection based on two independent parameters: surface temperature AND moisture or humidity. On dry-cold nights, the surface cannot ice without moisture present - and the system remains off. This dual-parameter approach is the key distinction between a correctly specified frost protection system and one that simply runs whenever it is cold.

The ET-9300 controller manages up to 8 sensor inputs, allowing independent zone control across a ramp, its approach walkways, entrance staircase, and drainage system from a single unit. The optional ET-9380 WLAN module connects to the ETHERMA eFROST online portal - enabling remote monitoring, weather forecast integration, and automatic seasonal adjustment without site visits.

A frost protection system that runs continuously regardless of conditions is not a specification. It is a liability.

ARC Assured

From site survey to annual service

ARC Assured is ARC's complete end-to-end programme for frost protection systems. It covers the full lifecycle of the system. One programme. One point of responsibility.

Most frost protection failures are not product failures. They are failures of specification, installation, or maintenance. An under-specified system fails to protect the surface. An incorrectly installed system voids the product warranty. A system that is never tested after installation degrades without detection - until the heating season it fails to perform is the one that causes an incident.

ARC Assured provides the installation record and the annual maintenance documentation that activates and maintains the 30year e-Warranty entitlement.

Site Survey

Substrate identification, heat loss profile, risk exposure, drainage geometry, control requirements

System Design

Heat load calculation, zone layout, product selection from the ARC Frost Protect range, eFROST control strategy

Specification

Full written specification with product references, installation drawings, and power load schedule

Supply

All heating mats, trace cables, sensors, and eFROST control equipment - coordinated from a single source

Installation

By ARC engineers to ETHERMA installation standards, with numbered mat layout, photo documentation, and as-installed record

Commissioning

Element resistance test, insulation resistance to earth, control calibration, sensor verification, written commissioning report

Annual service

Pre-season resistance testing across all heating elements, sensor accuracy check, control recommissioning, written inspection report

Technology by ETHERMA - European manufacturing, 40+ years of proven performance

ARC's frost protection systems are built on the ETHERMA product range - a specialist electric heating manufacturer with over 40 years of documented installations across commercial, industrial, and infrastructure applications throughout Europe.

ETHERMA products are designed and manufactured to the following standards:

TÜV Austria certified production

KEMA, OVE, and DVE certification

IP X7 rating - waterproof to full submersion dept

PFAS-free product range across all frost protection categories

eWARRANTY up to 30 years on heating mats with professional installation

The PFAS-free designation addresses an increasingly specific requirement on public sector, healthcare, and sustainability-led commercial projects. Specifying PFAS-free product is a defensible decision - under current regulations and under foreseeable future regulatory development in this area.

No. A correctly specified eFROST-controlled system activates only when both surface temperature and moisture or humidity conditions indicate ice risk. On dry cold nights, the system remains off. Depending on site climate exposure, a typical UK commercial installation operates between 150 and 400 hours per heating season - not continuously from October to April.

Running costs depend on the installed power output, surface area, control strategy, and local climate exposure. A correctly sized system for a commercial car park ramp might consume 6,000–15,000 kWh per season under correct eFROST dual-parameter control. Running the same system without moisture sensing - on temperature alone - can double or triple that figure. ARC provides running cost estimates as part of the specification process.

In most applications, yes. Stair heating (NSP-TS at 4mm depth) can be added to existing steps without structural alteration. Gutter and pipe trace heating is installed externally. Open space heating mats for ramps, driveways, and walkways typically require surface reinstatement - the scope depends on the depth and condition of the existing surface construction. ARC will assess your site and advise on the most practical approach.

An annual inspection before the heating season - covering resistance tests, insulation tests, control calibration, and a written report - is the recommended maintenance standard. ARC Assured from ARC provides this as a structured annual service, with optional integration with the ETHERMA eWARRANTY programme. Most systems require no reactive maintenance between inspections when correctly installed.

Yes. The eFROST ET-9300 and ET-9380 control units support BMS integration, allowing frost protection zones to be monitored and managed within your existing facilities management platform. The ET-9380 WLAN module also provides standalone remote access via the ETHERMA eFROST online portal for sites without BMS infrastructure.

For most commercial installations, planning permission is not required - surface heating is embedded within the structure and does not alter the building's external appearance. In conservation areas or for listed buildings, pre-application advice from the local planning authority is recommended. ARC can advise based on your specific site and installation type.

Get a Free Frost Protection Assessment for Your Building

Every commercial building has a different frost risk profile - different surfaces, substrates and exposure conditions. ARC's engineers assess your building, identify the risks, and specify a correctly designed system from the ARC Frost Protect range. No obligation. No generic recommendations.