SFG20 has been the UK industry standard for planned preventive maintenance since BESA published it in 1990. It's not software and it's not law — it's a library of 1,500+ maintenance schedules that translate legislation, British Standards and codes of practice into task-level work. Red tasks are statutory. Pink tasks are business-critical. Amber tasks are function-critical. Green tasks are discretionary. Every UK facilities team uses it as the specification standard — but SFG20 itself doesn't schedule work or produce evidence. That's where a CMMS comes in. Book a demo to see SFG20 workflows in action.
SFG20 · THE UK STANDARD SINCE 1990
The industry-standard task library. What you still need is the platform that turns it into scheduled work and audit-ready evidence.
1,500+
Maintenance schedules in the BESA Facilities-iQ library
2,500+
Organisations using SFG20 as the UK PPM specification standard
70+
Asset types covered — HVAC, electrical, water, lifts, fire, renewables
The SFG20 Criticality System — What Red, Pink, Amber and Green Actually Mean
SFG20's colour-coded criticality is the single most important concept for facilities teams to internalise. Red tasks are the ones HSE inspectors, insurers and clients will ask about first. Pink tasks are where contractual and organisational obligations live. Amber is where downtime economics sit. Green is where discretionary spend gets challenged. A CMMS that treats every SFG20 task the same misses the point — the whole framework is about *prioritisation under constraint*.
RED
STATUTORY / LEGAL
Legally required tasks — fire safety, water hygiene L8, electrical EICR, gas safety, lifting equipment LOLER, pressure systems PSSR. Non-completion carries HSE enforcement and insurance exposure.
EG · Emergency light monthly test · L8 legionella flushing · Fire alarm weekly test
PINK
BUSINESS-CRITICAL / CONTRACTUAL
Tasks that are contractually mandated, sector-specific, or operationally critical to the organisation — often added when tailoring a regime for healthcare (HTM), pharma, data centres or specific client SLAs.
EG · HTM compliance in NHS estates · Data centre UPS discharge test · Pharma GMP HVAC validation
AMBER
OPTIMAL / FUNCTION-CRITICAL
Best-practice tasks not legally required but essential for reliability, downtime prevention and equipment life extension. Where deferred maintenance economics start to hurt.
EG · Chiller condenser clean · AHU belt inspection · BMS software update review
GREEN
DISCRETIONARY
Non-critical maintenance. Improves aesthetics, tenant comfort or minor efficiency. First candidates for deferral under budget constraint — but still tracked to demonstrate a complete PPM regime.
EG · Non-critical fabric inspection · Landscape irrigation checks · Aesthetic touch-ups
Inside an SFG20 Schedule — What a Task Actually Specifies
Every SFG20 maintenance schedule is more than a task name and a frequency. Each entry breaks down into structured metadata that a CMMS needs to consume properly — otherwise the SFG20 investment gets stripped down to a task title and the whole benefit disappears. The anatomy below shows what each SFG20 schedule contains and how Oxmaint maps it into an executable work order.
Task Title
The maintenance action — e.g. "Inspect and test emergency lighting installation"
Frequency
Recommended interval — monthly, quarterly, annually, per operational hours
Criticality
Red / Pink / Amber / Green rating — drives prioritisation and evidence weight
Duration
Estimated time per instance — enables labour planning and cost forecasting
Skill Level
Competence category required — electrical, mechanical, specialist, general
Step-by-Step Actions
Broken-down procedure — the "what" and "how" of the task itself
Legislation Reference
Underlying regulation, British Standard or code of practice — the "why"
Safety Notes
Isolation requirements, PPE, permit-to-work triggers, competence verification
From Schedule Library to Site Regime — How SFG20 Actually Deploys
SFG20 isn't consumed off the shelf — it gets *tailored* into a site-specific maintenance regime. A hospital estate needs the HTM overlay. A data centre needs UPS and cooling redundancy schedules. A commercial office needs a leaner regime than a pharma cleanroom. The tailoring process is where the value gets unlocked or lost. Oxmaint's regime configuration mirrors the BESA Digital Partner Programme approach — schedules ingested via API, tailored per site, executed as work orders with the full evidence trail. Sign up free to tailor SFG20 into a site regime.
See SFG20-Aligned PPM Live
Walk through SFG20 schedule ingestion, RAG+P criticality-driven prioritisation, site regime tailoring, competence-gated task assignment and audit-ready compliance evidence packs — configured against your building estate. Thirty minutes with the Oxmaint team.
Where SFG20-Aligned Software Actually Pays Back
The economic case for SFG20-aligned PPM software isn't hypothetical. Sites running SFG20 through spreadsheets typically over-maintain some assets (wasted spend), under-maintain others (compliance exposure) and produce fragmented evidence packs when clients or insurers ask for them. A properly configured platform delivers three concrete gains. First, prioritised Red task compliance — the tasks that matter for statutory defence are visible, prioritised and evidenced. Second, deferred-Green savings — discretionary tasks explicitly identified and defensibly deferred under budget constraint. Third, contractual evidence packs generated by filter — SLA compliance demonstrated without the annual month-long assembly project. Sign up free to make SFG20 evidence a query rather than a project.
Expert Perspective — Why SFG20 Adoption Fails Without Regime Discipline
"
The most common failure pattern with SFG20 adoption isn't the standard itself — it's treating the SFG20 library as a drop-in replacement for the site's actual maintenance regime. SFG20 gives you the specification; it doesn't give you the tailored programme for your specific estate, your specific SLAs, your specific asset mix. Sites that import the full 1,500-schedule library without curating a regime end up with unrealistic PPM volumes, engineer burnout and the same fragmented evidence they had before. Sites that tailor properly — statutory Red tasks non-negotiable, Pink tasks aligned to their contract, Amber tasks scoped to the assets that actually matter, Green tasks defensibly deferred where appropriate — get to compliance and cost-control simultaneously. The platform's job is to make that tailoring maintainable over years, not just at the initial regime build.
01
Criticality-driven scheduling
Red tasks non-deferrable. Pink escalated per SLA. Amber under budget optimisation. Green defensibly deferred.
02
Site regime tailoring
SFG20 library filtered to site asset register. Regime version-controlled per estate.
03
Competence-gated tasks
SFG20 skill level enforced at assignment. Competence records tied to task categories.
04
Evidence packs by filter
Client SLA reports, insurer evidence, statutory audit packs assemble automatically per period.
Who Uses Oxmaint for SFG20-Aligned PPM in the UK
The platform is used across the specific UK facilities and building-services roles that own SFG20 delivery: hard-FM contractors managing multi-site portfolios under client SFG20 contracts, in-house facilities teams running SFG20-aligned PPM across corporate estates, NHS estates managers combining SFG20 with HTM overlays, higher education estates teams managing SFG20 across campus building portfolios, data centre operators applying SFG20 to critical UPS, cooling and power schedules, property managers producing compliance evidence for tenants and insurers, and building services engineers coordinating specialist trades against the Red/Pink task load. Each role sees the same asset data filtered to their view — Red task compliance queue, contractual SLA scorecard, deferred-Green list or annual audit pack. Sign up free to configure SFG20 workflows for your team.
Getting SFG20-Aligned PPM Live in 30-60 Days
Deployment starts by importing the building services asset register — HVAC plant, chillers, AHUs, boilers, electrical systems, water systems, fire safety, lifts, BMS. SFG20 schedules configure per asset class with the appropriate criticality inherited from the source library. Site regime tailoring aligns the imported schedules to actual asset holdings, applicable legislation, client SLA obligations and any sector overlays (HTM for healthcare, Uptime Institute tiers for data centres, GMP for pharma). Competence records tie to SFG20 skill levels. Contractor management workflows configure under CDM 2015 alongside SFG20 execution. Most facilities operations see criticality-driven scheduling, competence gating and evidence pack automation live within 30-45 days on a primary site; portfolio deployments typically inside two quarters. Book a walkthrough to see live UK SFG20 deployments.
Turn SFG20 Into Executable Work, Not Reference Documents
Oxmaint gives UK facilities teams an SFG20-aligned PPM platform — criticality-driven scheduling, site regime tailoring, competence-gated task assignment, contractor management and audit-ready evidence packs for statutory, contractual and best-practice maintenance across the estate.
Frequently Asked Questions
What is SFG20?
SFG20 is the UK industry standard for planned preventive maintenance of building services, developed and maintained by the Building Engineering Services Association (BESA) since 1990. It's a library of 1,500+ maintenance schedules covering over 70 asset types — HVAC, electrical, water, fire safety, lifts, renewables — that translates UK legislation, British Standards and codes of practice into task-level work specifications. Each schedule details the task, frequency, duration, skill level required, criticality rating (Red/Pink/Amber/Green) and underlying legislation reference. SFG20 is delivered through BESA's Facilities-iQ platform and used by more than 2,500 UK organisations. It is not a CMMS — it specifies what maintenance to do, not how to schedule, assign or evidence it.
What do the Red, Pink, Amber and Green criticality colours mean?
Red tasks are statutory or legal — required by UK legislation such as HSG253, EAWR, PSSR, LOLER, L8 or fire safety orders. Pink tasks are business-critical or contractual — mandated by SLA, sector-specific standards (HTM for NHS, Uptime for data centres), or organisational risk appetite. Amber tasks are optimal or function-critical — best practice for reliability and asset life, not legally required. Green tasks are discretionary — non-critical maintenance. The colour system enables facilities teams to prioritise correctly under budget constraint: Red always gets done, Amber and Green get scrutinised. Oxmaint applies the criticality rating to work order prioritisation, evidence retention and audit pack composition.
Do we need an SFG20 subscription to use SFG20-aligned software?
Yes — the actual SFG20 content (task specifications, step-by-step procedures, current criticality ratings, legislation references) is BESA intellectual property delivered through the Facilities-iQ platform on subscription. Any CMMS that claims to include full SFG20 content without a licence is misrepresenting the standard. Oxmaint's SFG20 alignment means the platform's data model, workflow structure and evidence packs are configured to consume SFG20 schedules — via manual configuration or through BESA's Digital Partner Programme API where the site holds an active subscription. This separation keeps SFG20 content authoritative and up-to-date via BESA while the CMMS handles scheduling, execution and evidence.
How does SFG20 integrate with CMMS platforms via API?
BESA operates a Digital Partner Programme allowing CAFM, CMMS and IWFM systems to consume SFG20 content through an API rather than manual data entry. This means schedule updates, criticality changes and legislative revisions flow automatically from Facilities-iQ into the maintenance workflow — critical because BESA continuously updates SFG20 as regulations change. Facilities teams can review and accept updates rather than manually tracking them. Oxmaint's integration model follows this pattern where the site holds an active BESA subscription. Sites without a subscription can still configure Oxmaint's SFG20-aligned data structure and criticality workflows against their own maintenance regime documentation.
How does an SFG20-aligned platform improve compliance evidence?
The compliance evidence problem in UK facilities isn't usually missing work — it's that completed work sits in fragmented systems (job cards, spreadsheets, engineer inboxes) that take weeks to assemble into a client SLA report, insurer evidence pack or statutory audit response. An SFG20-aligned platform tags every completed work order to its source schedule, criticality rating, legislation reference and skill level, so evidence packs generate by filter — every Red task in Q3, every LOLER-related task in the last 12 months, every contractual Pink task per client SLA period. What was previously a month-long compilation project becomes a query, and the evidence produced is structurally consistent rather than reconstructed.
