Karl Wiegand, PE

Karl Wiegand, PE, is a senior application engineer at Victaulic, a global leading producer of mechanical pipe joining, flow control and fire protection solutions for the most complex piping applications. Contact him at kwiegand@victaulic.com.

A 3/4" copper water main has frozen and cracked below ground outside a house. The background is excavated dirt.

Preventing sprinkler freeze failures starts long before the cold arrives

Why clearly defining heated envelopes, coordinating insulation and choosing the right dry technologies are essential to reliable fire protection in cold conditions.

Karl Wiegand, PE

December 9, 2025

When sprinkler piping freezes, the resulting consequences can be grave: water damage, operational disruption and loss of fire protection when it is needed most. These failures are frequently attributed to extreme weather, but most stem from oversights in controlled conditions, such as unclear heated boundaries, improperly installed insulation that isolates piping from heat and incorrect application of dry sprinkler technology.

Attic fire protection design

Choosing your scope for sloped roofs.

Karl Wiegand, PE

March 21, 2023

Concealed attic spaces combine some of the most difficult aspects of fire protection design and require carefully tailored fire sprinkler solutions for effectiveness.