Latest Scaffolding Guidance TG20:21 Now On Sale

100,000 TG20:21 compliance sheets downloaded

The NASC has today announced the launch of its updated and expanded scaffolding compliance software TG20:21 and is now on sale.

The new TG20:21 eGuide allows users to produce a wide range of standard scaffolding structures, without the need for bespoke design.

As with TG20:13, development of the new guidance has been carried out in conjunction with CADS (Computer and Design Services Limited), an international specialist in structural engineering design and technical authors of the TG20 eGuide software.

The latest version builds upon TG20:13, retaining its user-friendly look and feel, but includes a number of revisions to make the process of producing compliant scaffolding – in accordance with the European standard BS EN 12811 – even simpler, and incorporates a wider range of scaffolding types.

Additions include exterior birdcages, tube and fitting mobile towers, tube and fitting loading bays without beams, and tied independent scaffolds with three inside boards.

TG20 compliance sheets are now double-sided, with an illustration and principal compliance criteria on the front, and detailed compliance criteria listed on the reverse.

Users can access TG20:21 – including the associated and updated Operational and Design Guides – via the new NASC ePortal.

NASC has said the updated User Guide booklet will be published in May, and printed versions of the Operational and Design guides will follow.


The new TG20:21 is available on an annual subscription basis, costing £300 + VAT per login per year, which is discounted to £75 for their full members.

However the trade body has said, to ensure the transition from TG20:13 to TG20:21 is as fair as possible, there is a period of free use of the new software for existing users, which can be accessed using the TG20:13 serial number.

Speaking about the launch of TG20:21 NASC President Lynn Way said: “We’re delighted to launch TG20:21. We’ve been working on this update for 18 months, and I’d like to thank every single person that has played a part in its development.

“We’re confident that users of TG20:21 will recognise how we’ve taken the best parts of TG20:13, made it better and easier to use, but also kept the original mission statement in the front of our minds – creating a tool that scaffolding contractors can use to produce compliant structures for day- to-day scaffolding, and ensure that their scaffolding projects are safe and conform to legal requirements.”

Dennis Braithwaite, NASC Technical Advisor, added: “With the introduction of TG20:21, we are entering a ‘transition period’ to give the industry adequate time to adjust to the new requirements, in a planned and controlled way.

Existing scaffolds constructed in compliance with TG20:13 and associated compliance sheets remain acceptable and do not require modification.

TG20:13 compliance sheets are still valid and may continue to be used for the next few months. It is anticipated that TG20:13 will be formally withdrawn, in favour of fully adopting TG20:21 in the Autumn.”

TG20:21 will be supported by a comprehensive maintenance and development agreement, ensuring that updates and improvements are made on a regular basis.

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