We have vast experience in flat roofing. Protech have spent time and resources in becoming approved contractors for the leading flat roof waterproofing systems. This enables us to offer our clients an option for any flat roof or budget. All our systems are widely specified by architects and surveyors and are guaranteed from 10,15 + 20 years. Please find a brief introduction on all our systems. Sarnafil - PVC Sarnafil are the renowned world leader in single ply roofing, offering single point responsibility on all roofing products installed. Sarnafils guarantee is the most comprehensive on the market, offering the client the complete bespoke single ply system available. 10, 15 + 20 year guarantees available Completed Sarnafil Projects Completed Resitrix Projects Phoenix - EPDM Protech have installed thousands of meters of Resitrix membrane. It has a simple detailing and can be overlaid on most common substrates, making it ideal for refurbishment projects. It has a 50 year + life expectancy, totally recyclable, UV stable and comes with 15 + 20 year guarantees.