The innovative nu-lok system for the installation of ceramic and slate tiles uses a unique complex of metal battens that is superior to the old wooden version for fixing, proofing and locking tiles into place. The nu-lok system uses less tiles per square metre which means less weight. Nu-lok roofing system’s straightforward, efficient method of tile installation also works with natural slate, eliminating the need for double lapping unlike traditionally pinned slate. The result is a durable, weather resistant, easy maintenance roof of unrivalled quality, finish and appearance that’s guaranteed for 50 years. The nu-lok roofing system can now be used to install the revolutionary nu-lok seamless solar inserts. These unique new solar energy-producing inserts fit into the actual roof rather than on top of it. Ensuring that the integrity of the roofline remains intact, without the ugly fixtures common with previous solar energy panels. Nu-lok seamless solar inserts can be used on metal, concrete, terracotta as well as slate and ceramic roof types providing unlimited power depending on roof size.