Western US

Coast and interior valleys alike, where wildfire-zone spark-arrestor compliance is critical.

Wet winters and dry summers, with heavy wood-burning west of the Cascades.

Wet on the coast, dry inland, where moisture intrusion is the dominant west-side failure.

Arid high desert, where masonry takes thermal stress and nesting raptors settle in.

Hot and arid with monsoon rain, where sudden thermal cycling works damage into the crowns.

High-altitude cold winters — heavy wood-burning, deep creosote.

Cold mountain winters, pairing wildfire-zone code with heavy creosote.

Severe winters that lay down the heaviest creosote loads in the country.

High-plains cold and wind, where chase-flashing failure turns up often.

Front-range altitude wood-burning — strict EPA stove standards.

High desert and adobe construction, where kiva fireplaces are a specialty service.

Brutal winters — most-extreme freeze-thaw masonry stress.

Cold winters and wide temperature swings, where clay liner failure is common.