Trading under the name AB Tile Protection, Arthur Boswell was prosecuted by the Health and Safety Executive (HSE) for failing to ensure scaffolding, edge protection or other safety equipment was in place to stop workers being injured in a fall.
Trafford Magistrates' Court heard that an HSE inspector visited a two-storey house on Welch Road, Hyde on 15 September 2010 after receiving a complaint from a member of the public.
When the inspector arrived at the property, he saw a worker standing at the ridge of the roof, more than seven metres above the ground. The employee was using a power washer to remove moss and other detritus from the roof. The inspector issued an immediate prohibition notice stopping the work on the roof.
Speaking after the hearing, HSE inspector Declan Geraghty said: "There was absolutely nothing in place at the property to stop Mr Boswell's employee falling more than 20 feet to the ground and sustaining serious or fatal injuries.
"At the time of my visit, the employee was using a power washing to clean moss and other detritus from the roof. This would have made the roof slippy and therefore increased the risk of a fall.
"Around a dozen roofers are killed each year in the UK as a result of falls from height, and the majority of these deaths could have been prevented if those carrying out the work had planned the work properly and taken adequate precautions".
Mr Boswell of Booth Lane, Moston, Middlewich pleaded guilty to breaching Regulation 6(3) of the Work at Height Regulations 2005. He was fined 拢260 and ordered to pay 拢3,275 in costs.
Got a story? Email news@theconstructionindex.co.uk