Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Incompetency(noun) the quality or state of being incompetent; want of physical, intellectual, or moral ability; insufficiency; inadequacy; as, the incompetency of a child hard labor, or of an idiot for intellectual efforts.
#1- nobody can estimate costs over the Internet. there are many variables going into estimating. costs for a standard drop ceiling varies by quality and style, can go from $1.75.00 per sq ft,-$8.75.00. are there showers/moist areas requiring aluminum grid? what's the height? 8'-22' can be standard.
A carpenter will install 12-by-12-inch square ceiling tiles on wood furring strips in a 10-foot-by-12-foot room with ceiling molding for $728, which includes labor and material. You can buy the materials and do it yourself for $295, a savings of 60 percent. Ceilings/Floors.  Cost to Install Ceiling Tiles. Find the average cost to install ceiling tiles yourself compared with the labor and material cost of hiring a carpenter. Use your ZIP Code to adjust the cost to where you live so you can decide to do it yourself or hire a pro to do the job. Learn what to consider and the steps involved.