The National Gallery and Science Museum in London required extensive roof upgrades and maintenance to protect valuable exhibits. Both sites selected Sika Sarnafil membrane solutions to improve insulation, reduce energy usage, and lower utility bills. Over 12,000 square meters of Sarnafil membrane were installed at the National Gallery over 30 projects since 1995. The Science Museum's aging roofs were replaced in a series of tenders won by Delomac Roofing using Sarnafil. The lightweight, flame-free application ensured minimal disruption to visitors viewing historic aircraft. The roof refurbishments were designed and installed to a high standard by Delomac, backed by Sika Sarnafil's guarantees, to protect the exhibits for years to come.