23 Tonne Prefabricated Roof

Robertson Homes brought in a 100 tonne crane to lift the prefabricated top back onto one of the historic towers of Great Glen Hall. The tower was one of the features damaged by fire in 2007, but has recently been lovingly rebuilt to its 19th-century glory.

One of two being restored, the Western tower was the first to receive its new 23 tonne roof, with its core shape painstakingly recreated in steel by Metalwork UK in Tain. The structural steel frame then had treated timber rafters and sarking boards fitted to it prior to receiving slates, lead, metal pre-finished balustrading and bird netting.

Benefits

This system positively supports the CCS Code of Considerate Practice, including but not limited to:

  • Improving the image of construction
  • Enhanced health and safety in the workplace
  • Safety of our workforce
  • Enhancing best practice measures
  • Environmentally friendly solutions

What Makes it Innovative?

The thing that sets this method aside from how we normally construct roofs on our housing projects is that they are completely finished prior to lifting, rather than using a braced/trussed framework which is then craned into place then clad and finished in situ.

Completely finishing the roofs at ground level negates the need for further scaffolding and working at increased height, therefore reducing the risk. Components that the roofs are made from include:

  • Galvanised structural steel frame
  • 200mm x 50mm treated rafters
  • 22mm thick softwood treated sarking
  • Roof shield roofing membrane
  • Welsh slates
  • Code 7 lead
  • Powder coated steel balustrading
  • Bird netting

To find out more click the link below.

Go to resource


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Entry submitted by Robertson Homes


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