Armstrong offers a 30-year limited warranty for many of its ceiling tile brands as of 2015, including ARMATUFF, Calla, DUNE, Health Zone ULTIMA, KitchenZone, TRIMLOK, SILHOUETTE and SHORTSPAN products, according to the official Armstrong website. Other products with 30-year warranties from Armstrong include its FINE FISSURED, GRAPHIS Rustex and SCHOOL ZONE Fine Fissured ceiling systems. The company offers shorter warranties on its various other ceiling products.
For example, Armstrong's Capz, Spectra and Optima ceiling products have 10-year warranties, while its Infusion products come with 1-year warranties. Armstrong notes that the warranties it offers on its products may be affected by installation conditions. It does not authorize any person to extend or assume warranties on its behalf.