1 From the distance from the center of the earth to the peak of the mountain.  As mountains are generally measured from sea level, Mount Everest 29,035 ft (8,850m) is considered to be king. However, there is a difference between the highest and tallest.
You can buy acoustic ceiling tiles in either 2'x2' or 2'x4' sizes. It will cost about $1,000-$1,700 to install an acoustic ceiling system in an average 12'x14' room. Most contractors will charge between $2 and $5 per square foot for labor. A modest set of 12, 2x2 tiles can cost from $25-$40. There are more extravagant tiles which can cost as much as $100 for a set of 12.
Soundproof Acoustical Ceiling Tile Prices. Most soundproofing acoustical tiles provide 50% to 80% soundproofing capabilities. These tiles cost anywhere from $30 to $80 per ceiling tile.The cost of your ceiling tiles will depend on their soundproofing capabilities as well as their size.t fills space very well which makes it very effective at blocking sound. Foam Insulation costs $1.40 to $3 per square foot to insulate walls with this material. Check out our article on the costs of spray foam insulation to get a full description of the cost of installing spray foam.