Tunnel waterproofingTunnel waterproofing - a new level of protection Stirling Lloyd specializes in the development, manufacture and application of high-performance waterproofing and structural protection membrane systems. They have recently put their 40 years of experience to the test in developing a new spray applied waterproofing membrane known as Integritank HF which is based on advanced Methacrylate technology. For full details read the latest Stirling Lloyd press release. 33/09.