How do you install Armstrong ceiling tiles?

To install Armstrong ceiling tiles, you install drop ceiling grid system first, then place tiles into grid, with steps including measuring ceiling, installing wall angle, hanging main beams and cross tees, and dropping tiles into grid, or for glue-up tiles, applying adhesive to ceiling and pressing tiles. For Armstrong drop ceiling tiles like Cirrus or Dune, installation involves installing suspended grid system, first measure room and mark ceiling height, install wall angle molding around perimeter with screws, hang main tees with hanger wires every 4 feet, install cross tees perpendicular to create 2x2 or 2x4 grid, ensure level, then drop Armstrong ceiling tiles into grid openings, cutting border tiles with utility knife to fit. For Armstrong glue-up or stapled tiles like WoodHaven planks, clean ceiling, apply adhesive or use staple gun, press tiles onto ceiling, aligning tongue and groove. Safety includes wearing safety glasses and gloves, with Armstrong installation guides available on Armstrong Ceilings website and YouTube. So how to install Armstrong ceiling tiles depends on type, drop ceiling requires grid installation then dropping tiles, glue-up requires adhesive, both DIY friendly with basic tools like level, utility knife, and tape measure, costing 1 to 3 dollars per square foot for tiles plus grid.