Even so, many houses, including some of those built within the last few years, are not properly insulated.

Because heat rises, if your home is not properly insulated you may be paying to warm the air above it.

A source told Newsday they had not been insulated properly and were disconnected after freezing in winter.

The electrician would have to be called in, as the wires to the old brass chandelier had never been properly insulated.

The leaks originated from two buried pipes that had not been properly insulated when they were last worked on in 1991.

These top rooms may be difficult to heat or cool if the roof is not properly insulated.

In houses that aren't properly insulated and ventilated, heat from the house keeps the roof surface warmer than the outside air.

To prevent water condensation, the heating and cooling system must be properly insulated.

I want to promote the idea that people should use energy-efficient appliances and have their homes properly insulated.

A. The act discourages the use of electric heat in buildings that are not properly insulated or built.