Historic Chimney Flue Preservation

& Restoration System

Preserve History with Integrity

Created in partnership with Cathedral Stone Products, Inc. and Jahn Masonry Restoration Systems, FireGuard Historic merges traditional craftsmanship with modern material science to deliver a restoration system worthy of historic structures.

This advanced flue repair technology restores the structural integrity of aging chimneys while maintaining the authenticity of their original masonry. Through custom-blended, period-correct mortars and a physical match between substrate and material, FireGuard Historic ensures every project balances preservation with performance, protecting the legacy of the past for generations to come.

Learn more

The FireGuard Historic system uses a two-step application process designed for both preservation and performance. The first coat, a period-correct mortar bond break, restores structural integrity using materials formulated specifically for historic restoration. The optional second coat, a ceramic thermal-resistant layer, enhances durability for chimneys that remain in use.

This innovative dual-layer system forms a seamless, protective lining that strengthens the flue while retaining its original craftsmanship. Whether the goal is preservation or full functionality, FireGuard Historic delivers results that last for decades.

A Reliable Solution for Long Lasting Restoration

Built on 40+ Years of Restoration Expertise

FireGuard Historic builds on a proven legacy of chimney preservation success across the U.S. Trusted by restoration specialists and preservation architects alike, this system has been the first choice for projects demanding both strength and authenticity.

With unmatched durability, flexibility in application, and adaptability to temperature extremes, FireGuard Historic stands apart as the premier solution for restoring historic masonry chimneys with integrity and endurance.

Contact Us

Interested in hearing more about how FireGuard Historic Mix can fit into your upcoming projects? Fill out some info and we will be in touch shortly. We can’t wait to hear from you!