Cripple Creek is a historic gold-rush town in Teller County ZIP 80813, perched at 9,494 feet on the southwest flank of Pikes Peak. The town was founded in 1891 when Bob Womack found gold in Poverty Gulch; within five years the population had reached 50,000 and the district produced more gold than any single American mining district before or since. Today's population is closer to 1,200 year-round, the casinos along Bennett Avenue carry the economy, and the residential streets are lined with Victorian-era miners' homes that have been continuously occupied for more than a century. Goldfield, Independence, and the sister-town of Victor extend the historic district across the surrounding hills.

This elevation is the most punishing residential climate we work in. Winter low temperatures routinely hit -30F. The heating season is effectively year-round; we have installed windows on a 70-degree afternoon in late June with snow falling by 8 PM. Annual UV exposure at 9,494 feet runs roughly 35-40% higher than what national NFRC test ratings reflect. And the housing stock is genuinely ancient: 1890s-1910s Victorian frame houses with original double-hung wood sashes still account for a meaningful share of the residential inventory, often with single-pane glass that has been there since President McKinley was alive.

At 9,494 feet, capillary-tube IGUs are absolutely required. Any sealed unit not breathed at this elevation will fail the seal early, often within the first decade. Andersen 400 Series and A-Series build altitude-rated when the order specifies it, and we field-cap the breather tubes once units equalize on site. For Cripple Creek's heating load, we recommend triple-pane Low-E with argon, U-factor 0.18-0.20, which lands well past the ENERGY STAR V7.0 Northern Zone target and clears HB 23-1161. The Victorian-era housing stock often needs Andersen A-Series in custom sizes with historical grille patterns to preserve the streetscape character that gives Cripple Creek its National Historic District designation.

Pro tip specific to Cripple Creek: lead paint is functionally guaranteed on any pre-1978 home, which is most of the housing stock. Federal RRP rules require certified lead-safe work practices when disturbing painted surfaces in those homes, and we carry the EPA RRP certification to handle it. Many out-of-town installers skip this step or pretend it does not apply at altitude. It does. We document the work properly, contain the dust, and leave the historic interior trim intact wherever possible, which matters as much for code compliance as for the resale value of a designated historic property.