QWERTY is the name of a keyboard layout, originally designed to  prevent jams that occurred when the keys clashed together.   They're most commonly used on personal compu â¦ ters and mobile phones.    QWERTY are the first six letters from left to right on the top  letter row of your keyboard.
The average salary for mechanical insulation estimator jobs is $64,000. Average mechanical insulation estimator salaries can vary greatly due to company, location, industry, experience and benefits.
The cost to install this type of insulation varies, depending on the home's location, the amount of labor necessary and ancillary supplies. A standard insulation project requires about 535 square feet of insulation, which averages $145 to $200.omeowners can choose from a variety of R-values, thicknesses and price points, depending on their insulation needs. R-values range from 11 to 38. The cost for batt and roll insulation starts at $0.12 to $0.16 per square foot for a three-and-a-half-inch barrier that provides a value of R-11.