Sika Sarnafil solution creates luxury communal gardens for residents

A stone’s throw from South Bank, BREEAM certified London Square development, Bermondsey Village, is located at the corner of Lamb Walk and Morocco Street. A mixed-use new build, the scheme provides luxury apartments with a communal garden area and balconies, which required a clever roofing solution from Sika Sarnafil, Sky Garden and Contour Roofing.

The design of the building reflects the eclectic and exciting architectural context of the surrounding area. The modern style of the apartments required a roofing solution that would look stunning and offer high performance. At one time, a roof was once seen only as a means of protecting a building from the elements, but now it is increasingly being seen as a valuable space that can be utilised. The client needed a biodiverse, sustainable communal garden and roof as part of the project.

The project was split into three parts – the accessible green roof for residents on the first floor, then the green roof and brown roof at a higher level. These were chosen for their aesthetic values (as they could be seen from surrounding buildings) and to assist with the disposal of rainwater.

The project was originally specified in hot melt. However, this product specification wasn’t possible, as it wouldn’t give the desired aesthetic finish required by the client and architect. The client wanted an ‘all singing, all dancing’ solution that would deliver superior performance and a flawless finish, in line with the luxury flats.

Jonathan Woods, Contour Roofing, suggested using Sika products, as the roofing project was complex and expansive, requiring expert advice and planning. He explained that Sika give the best for support to both contractor and client, and would be the ideal option. It was a challenge to change the specification at a late stage, but Contour, working in close partnership with Sika, provided a solution that met, and exceeded, the client’s expectations.

Work was done to cover the main roof, balconies and podium over a car park using a full warm ballasted system with Sarnafil G410-18EL Light Grey as the main roof sheet and Sarnafil G410-15EL Light Grey and S327-15EL Light Grey for the flashings. The design of the communal gardens was intricate and detailed, especially around roof lights, podium and upstands. Sikalastic Liquid Applied Membrane was used on some of the detail areas and the balconies, demonstrating the great compatibility between Sika’s various roofing products. All work was finished to an extremely high standard, as was the aesthetic requirement of the client, achieving a 20 year guarantee from Sika.

Sky Garden, the UK’s leading independent specialist company for green roofs and podium landscaping, worked with Contour and Sika, providing expert advice on biodiverse habitat creation and living roof design. Sky Garden provided technical support and information for the hard and soft podium landscaping, biodiverse habitat creation and green roof requirements, to ensure the systems met all BREEAM ‘Very Good’ certification, planning and client requirements for the project.

As a residential development, it was imperative for Sky Garden and Contour to complete the podium works to a very high standard so that new home-owners could move in to a welcoming ‘green’ environment, complete with amenity areas, communal seating, lawns, timber pergolas and established planting.  Sky Garden worked closely throughout the project with partners at Contour Roofing, Sika and London Square, to ensure that the challenges of strict budget, tight programme and mid-London site with restricted access were all met successfully.

All work was completed in early 2015 and independently tested by Thornton Consulting to make sure it was of the highest quality, passing with flying colours.

James Ansell, Development Manager at London Square, said:

“We were really impressed with the finish on the Bermondsey Village building. The work that Contour did was of the highest quality and were very happy with how everyone worked together to deliver a high performance solution. The Sika Sarnafil solution looked visually stunning and we were particularly assured by the level of guarantees offered by Sika across the whole roof, as this gives us piece of mind for the future. We are now working with Contour on a number of projects going forward.”

For more information on Sika Sarnafil’s products and services, call 01707 394444, email sarnafilroofing(Replace this parenthesis with the @ sign) or visit