TG20 explained on demand: NASC launches AI guidance assistant for members and CISRS centres

The National Access and Scaffolding Confederation has launched an AI-powered assistant that gives NASC members and CISRS Centres a direct route into the trade body's accumulated technical, safety and training guidance ^[1]. The tool, which went live on 11 August 2026, arrives as the sector faces a recorded shortfall of around 40,000 skilled workers ^[2] and as CITB funding cuts have pushed more of the burden of self-directed training research onto individual businesses ^[3].

What the NASC AI guidance tool does

NASC and CISRS have built up an extensive knowledge base covering technical guidance, health and safety, standards, training and competence over several decades ^[4]. Until now, locating a specific answer meant identifying the correct document first and working through it, a process that has not always been straightforward, particularly for smaller businesses without a dedicated technical resource ^[5].

The new assistant changes that workflow. Members and CISRS Centres can ask a question in plain language and receive an answer drawn from across the combined NASC and CISRS knowledge base, with a pointer back to the source document so the original guidance can be checked directly ^[6]. The tool covers TG20, SG4, technical standards, health and safety, training, competence and CISRS requirements ^[7].

Critically, the assistant draws exclusively from NASC and CISRS resources, including member- and centre-only guidance that is not in the public domain, rather than from the open internet ^[8]. Mark Collinson, Head of Technical at NASC, noted that "the guidance has always been there, but knowing exactly where to look for it has not always been straightforward" ^[9]. He described the tool as "a much quicker route to the right information" and was explicit that it is not a substitute for reading the guidance itself ^[10]. The assistant is accessible via a round icon in the bottom-right corner of both the NASC and CISRS websites ^[11].

Two readings: practical gain or a shortcut to misapplied guidance?

Proponents point to the practical benefit: time. Rather than searching through multiple documents and web pages to find one piece of information, the assistant consolidates the relevant knowledge in one place and makes it available whenever it is needed ^[12]. For smaller scaffolding contractors without their own technical department, that could make a noticeable difference when trying to find guidance quickly under site or commercial pressure ^[13].

A more cautious reading centres on the distinction between locating guidance and understanding it. NASC has been clear that the tool is designed as a way into NASC and CISRS guidance rather than an alternative to the documents themselves ^[14]. The risk, familiar from any summary tool, is that a user treats a condensed answer as the full picture. The tool avoids one class of error, drawing from non-NASC sources, by restricting its knowledge base to material produced by NASC and CISRS ^[15], but the quality of any decision still depends on the user reading the source document the tool identifies.

Why this is also a contractual question for scaffolding managers

Access to correct technical guidance has direct contractual implications. Where a scaffold design or method statement references a specific edition of TG20, or where a tender requires compliance with SG4, a contractor that has misread or misapplied those standards faces exposure both under the contract and, potentially, to HSE enforcement. NASC membership is also specified as a requirement or recommendation in an increasing number of frameworks: a recent £207 million Efficiency East Midlands scaffolding services framework, for example, required CISRS-qualified operatives and recommended NASC membership as a mark of compliance ^[16].

The AI tool sits inside that context. For a commercial manager, QS or contracts manager reviewing a tender, being able to cross-check the relevant clause of TG20 or SG4 quickly and accurately, and trace it back to the authoritative source, reduces the risk of a specification error becoming a contractual liability. Keeping CPD records current and understanding how CISRS requirements interact with contract obligations is covered in the ScaffSkills guide to CPD for scaffolders, which also sets out the CISRS card renewal cycle.

The launch also follows NASC's appointment in June 2026 of Rob Boardman as its new Head of Training and Education, joining from a nine-year tenure at 3B Training, a CISRS-recognised training centre, where he held the role of Operations Director ^[17]. NASC said the appointment came at an important time for training and education across the scaffolding and access sector, with continued focus on competence, skills shortages and the future structure of CISRS training routes ^[18]. The AI tool and the new appointment together signal a concerted push by NASC and CISRS to make their guidance infrastructure easier to use at a moment when the sector needs to train more people with fewer externally funded routes.

CITB funding changes 2026: the wider context

The timing matters partly because CITB's funding reforms have reduced the financial support available for many training routes. From 8 January 2026, short-course grants were withdrawn except for a defined list of specialist courses that includes scaffolding ^[19]. From 1 April 2026, large employers, those with 250 or more staff, were moved to a separate Large Employer Fund, an interim measure while CITB develops a longer-term approach ^[20]. Employer Networks funding for smaller firms was set at £11.5 million for 2026–27, with caps introduced at each employer-size band ^[21].

Critics argued the changes hit micro and small firms hardest. Construction News reported concerns from training providers that the Skills and Training Fund, which had provided annual grants of between £2,500 and £10,000 to smaller employers, was closed in September 2025, leaving firms relying on Employer Networks payments that one provider described as insufficient for a micro company ^[22]. CITB maintained that the reforms were necessary to distribute funding sustainably as demand rose 36 per cent over four years while the levy rate remained static ^[23].

Against that backdrop, the value of free, accurate, on-demand access to the guidance that underpins CISRS training and NASC technical standards is more tangible than it might have been when grant funding was easier to access. Businesses that previously relied on a training provider or CITB adviser to navigate the guidance library must now navigate more of it themselves.

Guidance that sits in a document no one reads protects no one; the measure of any tool is whether it moves accurate knowledge from the page to the decision.