New residential building construction in the US.

Summarizes the information obtained concerning new residential construction in the US and points out important differences between US and Swedish technology and construction methods for energy efficient housing. Selected building components for US housing are described and compared with corresponding Swedish techniques. Most important differences are -1. Differences in ventilation strategies - almost all new Swedish houses have continuous mechanical ventilaton. 2. The airtightness of building envelopes. 3. Wall constructions and standard insulation practices. There are energy-efficient US houses that have the same features as the most energy- efficient houses in Sweden, but the variations from standard construction are much greater in the US.