Alumasc’s independently insured Euroroof SupaGOLD roofing system provides London Met Police with the perfect flat roof solution

2,200m² of Alumasc’s SupaGOLD Waterproofing System has been installed at the Metropolitan Police Authority’s Quicksilver Patrol Base in London.

Following numerous historic patchwork repairs to the existing waterproofing system, Vinci Facilities commissioned Alumasc to perform a detailed site survey of all flat roof areas. The resulting Roof Condition Report stated that the original system integrity was seriously compromised, with high levels of ponding, standing water and leakage to the main roof area.  Varying levels of deterioration across the roof areas were also recorded and clear recommendations for how these would be addressed were given within the site specific specification. Alumasc’s SupaGOLD Waterproofing System was advised as the perfect replacement for this roof as a key requirement for this project was that the system must be independently insured for up to 20 years.

Vinci Facilities appointed approved installer TR Freeman to refurbish the 2,200m² of existing roof areas using Alumasc’s Euroroof SupaGOLD Warm Roof System, to deliver high-performance waterproofing and a fully engineered tapered insulation scheme to ensure effective water management was maintained across the surface and eliminate the past, ongoing problems of standing water on the roof. The waterproofing system also included the refurbishment of the original roof lights with Alumasc bespoke Roof lights.

The first step was the complete strip and removal of the deteriorated waterproofing system from the metal deck beneath. Appropriate surface preparation to the area was then undertaken prior to the installation of the Vapour Control Layer; providing immediate protection against water ingress into the main building and offices below.

Areas identified as suitable for “up-grade” received necessary preparation works and surface conditioning, prior to the application of the proposed specification.

The Alumasc cut to falls (tapered) scheme was designed to enhance and overcome the existing design falls to each respective roof area.  The design brief for the drainage plan was to utilise the existing drainage locations, remove standing water from all roof areas and meet the target u-value of an average 0.18W/m²K.

TR Freeman then applied the Euroroof SupaGOLD waterproofing system, which comprised of a Vapour Barrier, PU bonded PIR Insulation SUPA XL Underlay and finally the Euroroof SupaGOLD capping sheet.

Effective planning and teamwork was essential, as all of the work had to be completed without disrupting the functioning of this critically important Police Response Unit – the unit needed to remain fully operational at all times.

Robert Bruce, Operations Manager of Vinci Facilities commented: “The service and support from the initial survey through to completion was excellent. Alumasc provided us with the solutions we needed, such as the design of the tapered roof scheme to help with drainage. The 20 year independently insured system that was proposed helped us meet the key requirement for this project. We have worked very closely with & Alumasc Roofing Systems & again the project has gone as expected.”

Further details about Alumasc’s full range of waterproofing systems can be found at www.alumascroofing.co.uk or by calling 0333 5771 500