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Product category: Roofing
News Release from: Letchworth Roofing | Subject: Roofs at the Stoke Mandeville Hospital
Edited by the Buildingtalk Editorial Team on 09 February 2006

Letchworth roofing install over 30 new
roofs

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Letchworth Roofing has recently completed a major roofing project involving the installation of 34 separate roofs at the Stoke Mandeville Hospital.

Letchworth Roofing has recently completed a major roofing project involving the installation of 34 separate roofs at the Stoke Mandeville Hospital near Aylesbury in Buckinghamshire The development is a PFI joint venture involving McAlpine Capital Projects and Hayden Young to provide new facilities for a hospital with an international reputation

The new facilities include acute wards, day procedure units, a mortuary, a medical records centre as well as a completely new entrance building for the hospital with reception services, offices, restaurant and shops.

The complexity of the project was such that Letchworth Roofing provided an onsite Project Manager, David Norcross, for the entirety of the work from January to December 2005.

David together with Letchworth Roofing Single Ply Contract Manager, Duncan MacRae was responsible for all aspects of coordination with the main contractors and planned the availability of roof areas to work on, Health and Safety requirements for all roof work, deliveries of materials and supply of labour.

Cyril Balcombe, Divisional Manager of Letchworth Roofing Single Ply highlighted the benefits of the on site Project Manager.

"With three or four roofs being worked on at any one time tight logistical control of the work was critical".

"Adhering to the timing schedule was essential to ensure that other trades had access without delay".

"Tight management of labour was also necessary as all personnel on the site had to be accredited to the Construction Skill Certification Scheme, a requirement that Letchworth Roofing with its 34 years of investment in employee training was happy to comply with." Although it was only one of the 34 roofs that Letchworth Roofing worked on the most striking in appearance was a single ply Rotunda roof with Corus metal decking covered with a Ds-Pe Trocal vapour barrier, Kingspan TR26 foil faced insulation topped off with a Trocal Slate Grey 'S' membrane mechanically attached system with a Trocal standing seam profile.

The finish of the roof mirrored the standing seam metal decking system used elsewhere on the development.

The majority of the high level flat roofs with a total area of 2,800 square metres involved the use of Alumasc felt roof materials.

Corus metal decking was covered with an Alumasc Hi-Ten bond vapour barrier and cut to fall insulation with a Derbigum Charcoal Mineral cap sheet finish.

Derbigum is only installed by Approved Contractors such as Letchworth Roofing and offers five different installation options.

The no flame option with seams torch sealed was used at Stoke Mandeville to provide increased site safety combined with ease and speed of application.

Letchworth Roofing also worked on eight concrete deck roofs.

On these an Alumasc vapour control layer, cut to fall insulation, Alumasc Derbibond 'S' and Derbigum Mineral cold applied cap sheet system was used topped off with paving and pebbles.

The project was extremely challenging due to the number of roofs, range of roofing types and the schedule requirements of the main contractors.

Cyril Balcombe however is adamant that this was just the type of challenge that Letchworth Roofing are eager to take on".

"The experience and expertise of our roofing personnel together with our health and safety culture provides us with complete confidence in our abilities to deal with complex projects such as Stoke Mandeville.".

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