London, United Kingdom


Contour Roofing was called on by client Paul Simon Homes to offer a premium waterproofing solution for Cheltenham House, thanks to the success of its previous award-winning London residential new build, Ewart Grove.

cheltenham house Sika Sarnafil single ply project

Flat Roof Project Requirements

A conversion project with the addition of a new wing in London Cheltenham House comprises of 11 luxury apartments. The entire roof and vertical works are shaped like a Rubik’s Cube – a puzzle that was no match for Contour Roofing’s problem solving skills, paired with Sika Sarnafil’s flexible, durable products.

Originally specified with metal cladding, the client wished to replicate this look for less cost, while achieving the same beautiful finish. Jonathan Woods, Managing Director at Contour Roofing, once more proved that Sarnafil’s single ply membranes can accommodate the most complex builds, while offering the client one of the most robust extensive product guarantees on the market.


Sika Single Ply Roofing Solutions

Contour Roofing worked closely with Sika Sarnafil to generate a bespoke specification with Sika Sarnafil’s recently launched Self Adhered Membrane in lead grey, and décor profiles to emulate metal seams. Custom-made Sarnametal details were cut and fabricated to accommodate the various angle changes on the roof, including vent grills to the base of the cube.

Sarnafil’s new spray-applied adhesive Primer 610 was quickly and carefully applied to all the vertical areas, to accommodate the application of the Self Adhered Membrane. The weight of each drop (over 18kg) proved extremely challenging, and had to be secured with a peelstop, and fixed at every point with stainless steel SFS fixings. The décor profiles were installed with upmost precision and careful measurement, creating symmetry and uniformity on all four sides of the building.

"Every single detail on this project has been carefully planned before application of the products. This, coupled with the wealth of experience invested by our contract manager and award-winning fitters, meant the project was finished to perfection. Sarnafil advised us to use the new Primer 610 and Self Adhered Membrane, and helped us to understand the product with demonstrations at its Training Academy and our offices. Change is always tough, certainly with experienced fitters, but we insisted that the Self Adhered Membrane was paramount for the success of the roofing works at Cheltenham House. The product is quick and easy to use and leaves a beautiful finish to any application it’s used on." Jonathan Woods, Contour Roofing

Commenting on the delivery of the project, Carly Tang of Paul Simon Homes said: “After the huge success of Ewart Grove, we reached out once more for the services and expertise of Contour Roofing, and again they did not disappoint. We were able to offer a project well under budget and on time, thanks to the hard work of the team and the innovative Sika Sarnafil Self Adhered product.”

The project was shortlisted in the NFRC Roofing Awards 2017 Single Ply Roofing category, testament to the skilled workmanship shown by Contour Roofing.

Products Used

Sika Sarnafil G410-15EL single ply membrane in Lead Grey

Décor Profiles in Lead Grey

Spray Applied Primer 610

SarnaTherm Insulation