In the last few years, as I tool around Newton on my bike, I have noticed a proliferation of new houses, usually built to replace tear-downs, with flat roofs and with large glass panels or sliding doors on the side walls. My wife and I call them Riviera or St. Tropez Houses.

The increasing presence of Riviera Houses in the Garden City seems odd. A flat roof was once anathema in the northeast because heavy snow or high rainfall could quickly lead to leaks. Hence, the prevalence of pitched roofs, sometimes steep. Large windows, wisdom held, leaked heat in the winter and cool air in the summer. They were, obviously, less energy-efficient.

It might seem that a Mediterranean hill overlooking a harbor filled with sailboats, or a half-acre in the Loire Valley bordering a vineyard with a hillside in the distance, would better suit such houses. In addition, in Newton the vistas out those glass panels are rarely scenic. For example, one of these Riviera houses, with ample glass portals, faces an intersection near the busy Beacon Street/ Chestnut Street crossing.  Consequently, its residents mostly view passing automobiles and a wooden fence on the opposite side of the street.

 No doubt, modern homes are better constructed and insulated than those built in the day of pitched roofs and modest windows. The double-plated glass probably conserves temperature as well as an insulated wall, for all I know. Perhaps, the modern flat roof is as impervious to rain and melting snow as a conventional pitched roof. Still, I am curious. Is it a fad, or is there a practical reason for the proliferation of Riviera Houses in the Garden City?