Armstrong Biome Bergen (ST285) is the darkest Boreal color at 15-19% light reflectance. Armstrong's swatch shows what appears to be a deep charcoal gray with fine, clean grain.
The 30-year warranty doesn't give the same coverage every year. With a recommended Armstrong adhesive installed according to the instructions, AHF supplies replacement material and pays reasonable labor for covered defects reported in writing in the first year, pays 50% of labor in the second year, and covers material only after that. Coverage belongs to the original end user, can't be transferred, and requires the original receipt, so keep it with the project records.
Finish: Diamond 10 Technology
Installation and warranty: Full-spread glue-down. The 30-year commercial limited warranty requires a recommended Armstrong adhesive, such as S-995 or S-1000, installed according to Armstrong's instructions.