window frost

Mark Meshulam is an expert witness and consultant for window condensation. Here’s what happened after one of Chicago’s typical cold snaps: This week Chicagoans experienced our first brutal blast of winter. Temperatures dropped from an average of 30°F to almost 0°F in a single day. Windy City winds dropped the wind chill to minus 20°F. Our bodies endured the new arctic reality with shock. The…