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RCI December 2017

PITCHED ROOFING Remote access Having recently completed a project in the Outer Hebrides, Chris Bridgman explains the considerations and planning needed when installing a green roof The release of the first UK Green Roof Market Report earlier this year, showed the industry has grown an impressive 17% year on year. With planning policies in London supporting green infrastructure, a huge 42% of the market is delivered there. It would seem the next step would be for more local authorities to include measures within their policies to support the development of urban greening. But green roofs are not just focused to big cities. Improvements to our environment, both on an ecological and social scale are important nationwide, and some impressive projects are going up in far flung corners of the UK as specialist green roof installers Bridgman & Bridgman can attest to. This beautiful Scandinavian timber-framed home (see pics), complete with a stunning green roof, is located on the very western edge of Europe. With heather-backed mountains on one side and windswept white sands on the other, this Atlantic Ocean island is the home of Harris Tweed. The property even boasts its own private beach on the western coastline. Fjordhus contacted Optigreen and Bridgman & Bridgman to design and install a pitched green roof system on a timber-framed home on the Isle of Harris, Scotland. The house and garage are topped with a series of 20-degree pitched roofs. SRS Projects (Scotland) installed the 084 DECEMBER 2017 RCIMAG.COM in a location with challenging environmental factors waterproof membrane. Due to the size of the site, the building project required 90% of the island’s scaffolding during construction. For Bridgman & Bridgman, the project was 650 miles away from their HQ in Milton Keynes; some 17 hour journey which included ferry crossings. Phone signal is extremely limited, and contacting suppliers and the office involved a 20- minute drive to a high-level area to get signal. Sending materials from the UK mainland often took 3-4 days travelling time. The roadway up to the house was constructed from local rock, but unsuitable for HGVs; and a Telehandler was required to bring all the materials from the island road up the mountain face to the work area. Strong winds of up to 95 miles per hour were experienced during Bridgman’s time on the island and many days were lost and work halted due to severe gales and driving rain. The roof and vegetation needed to be able to cope Project Details: Project: Private dwelling, Isle of Harris. Location: Outer Hebrides Client: Fjordhus Waterproofing: SRS Projects (Scotland) Green Roof Contractor: Bridgman & Bridgman Optigreen System: FKD58 Pitched Roof System Size: 500m² Completed: 2017 Accolades: Optigreen Green Roof the Year Award winner 2017 with the high sea salt levels and winds measuring over 120mph, which the island have previously experienced. Three articulated lorry loads of material were delivered to the island containing some 30m³ of substrate and 21 pallets of pre-cultivated sedum mat. Since completion the house owners report that Golden Eagles and White-tailed Eagles frequently visit the roof. As part of their continued involvement with the now completed project, a drone operator, based on the island, has been contracted by Bridgman & Bridgman to take monthly aerial images of the roof area and send the images back for roof monitoring and wind up-lift checks. www.optigreen.co.uk www.bridgmanlandscapes.co.uk Images: Bridgman & Bridgman. Roof laid using Optigreen roof system and installed by Optigreen partner Bridgman & Bridgman


RCI December 2017
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