Natural Light backs up the quality and craftsmanship of our Tubular Skylight with our limited lifetime warranty warranty against manufacturers defects in material and deterioration. The warranty is subject to proper installation of the unit in accordance with the written installation instructions. Each unit comes with a warranty registration form that must be completed and submitted to Natural Light in order to receive the warranty benefits. You can also easily register your Tubular Skylight online or download a PDF warranty form to mail or email back to Natural Light.