scaff tag

A scaff tag is a durable label, usually plastic or aluminium, attached to scaffolding after a competent inspector has verified that the structure meets safety standards and is ready for use. The tag typically bears the inspector's name or company, the date of inspection, and an expiration date, usually 7 days from issue. It serves as documentary evidence that the scaffold has been erected in compliance with relevant regulations, usually the Construction (Design and Management) Regulations or equivalent national standards.

The tag is fixed prominently to the scaffolding, most often at the base or near the main access point, where it cannot be missed by workers entering the structure. Some sites require additional tags at multiple levels on larger scaffolds. The presence of a valid tag tells site supervisors and workers that the structure has been checked against the design specification, that connections are properly secured, and that load-bearing capacity matches the planned use. An expired or missing tag means the scaffold must not be used until re-inspected.

Inspection and liability

The inspector performing the examination is typically a certified scaffolder or engineer designated as competent under health and safety law. They physically walk the scaffold checking for defects: bent tubes, missing bracing, insecure platforms, and unstable foundations. The tag itself does not guarantee safety, but it creates a record that a qualified person has examined the work. Site managers rely on it to demonstrate due diligence if an incident occurs.

Tags expire because scaffolding can degrade through use, weather, and impact damage. High-traffic areas develop loose connections; wind and vibration loosen fasteners; rain corrodes metal. A seven-day cycle is common on busy sites where the scaffold is regularly loaded and moved. Long-term or permanent installations may be re-inspected weekly or monthly depending on site conditions and usage intensity.

The term 'scaff tag' is colloquial site shorthand; formal documentation may refer to it as a 'competent inspector's certificate' or 'scaffold safety certification label'. On projects with union involvement or in sectors like shipyard work or heavy industrial construction, the labelling system and inspection frequency may be more rigorous than on small building sites. Failure to tag or maintain current tags can result in enforcement action and work stoppages.