Floor finishes and certain chemicals in wood oxidize and are affected by ultra violet light sources. This may cause the wood and finish to change color and develop a patina or aged appearance. To avoid uneven appearance, move area rugs occasionally and drape or shade large windows.
Low grade stainless steel screws and nails will sometimes stain the surrounding wood.
Whether you intend to install insulation yourself or hire a contractor, make sure that you know the guaranteed minimum R-value you are looking for. Have any contractor state that installed R-value as part of the bid. Also, prepare for the project by assessing what needs to be done to reduce air infiltration before installation. Include the cost of these added components and labor in your cost calculations. Keep in mind, too, that a tight home requires ventilation, so you may need to take another look at your bathroom and whole house ventilation strategies. Armed with all of this information, select the insulation that meets your energy efficiency, budgetary, and installation requirements. The end result will be a job well done, with energy and cost savings to tally long into the future.
When you want to measure something at home or in the hardware store and you don't have a tape measure handy, try using a dollar bill. It's 6 1/8 inches long and almost exactly 1 1/2 inches when folded in quarters.