Q: How can I be sure a basement won't leak or an attic won't be stuffy and hot if I want to use it for living space?

A: New products and systems that waterproof basements and create comfort in attics enable these areas to become full-time living spaces instead of occasional-use quarters.
For basements, elastic but tough waterproofing membranes, insulation and perimeter drainage systems combine to shed and create a barrier against water intrusion. For both basement and attic, heating and cooling systems can be "zoned" to service specific areas of a house — each controlled by a separate thermostat — to help insure comfort and energy efficiency.