Guardian was developed by chimney restoration professionals with more than 30 years combined experience. Our team set out to create the safest, most advanced chimney lining system available. The result is the unequalled protection of the Guardian Chimney Liner®.
No other chimney lining material offers the level of protection provided by the Guardian Chimney Liner®. The only chimney liner tested and listed to the UL 1777 standard at 3/4" liner thickness for zero clearance, the Guardian Chimney Liner® provides maximum protection for your home and family.
Poured and solidified within an existing chimney structure, the Guardian Chimney Liner® permanently restores the structure, even the critical smoke chamber component of a fireplace, without altering the appearance or historical integrity.
The configuration and high insulating properties of the Guardian Chimney Liner® normally improves fireplace or appliance performance and is suitable for all fuels.
The Guardian Chimney Liner® is suitable for all heating appliances and nearly all chimney structures. The Guardian system is also ideal for creating multiple flues in a single large chimney space, so multiple appliances can be vented safely within the same chimney.
Cast-in-place chimney liners are recognized by architects, engineers, and the insurance industry, as the preferred method for chimney repair. The Guardian Chimney Liner® is simply the best cast-in-place liner available today.
The Guardian Chimney Liner® is backed by a lifetime guarantee. Please see your chimney restoration professional, or contact us for details.
"When one of our clients demands the very best we only recommend Guardian. Whether we're relining a chimney in an average size home or mansion, this liner provides the best protection for them and ultimately us."

Mason's Chimney Service, Mickleton, NJ
"When we provide our customers with information about the different types of chimney liners we offer, most choose the Guardian chimney liner. Our customers appreciate the protection the system offers, and they also sense our confidence. We never hard sell; we just provide the facts and let the customer choose."

The Chimney Master, Gastonia, NC
"We had a Guardian liner installed in 1999 and had a chimney fire in March, 2009. The chimney sweep that cleaned and inspected the flue after the fire reported that the liner looked 'brand new.' I felt the Guardian liner would be OK because of the research I did when choosing a chimney liner in 1999, but the chimney sweep affirmed my confidence."

M. W., Fredericksburg, VA
"For over ten years Mad Hatter has used the Guardian system for chimney lining projects where performance and material quality is vital to the customer. We have been very satisfied with Firesafe's technical support and other products, and will continue to use Firesafe's products, especially FireGuard for the repair of open mortar joints."

Mad Hatter Services, Alpharetta, GA