Chimney Waterproofing 2018-06-15T18:00:04-04:00

Chimney Waterproofing

Our chimney sweeps are industry certified and very knowledgeable.

Photo of chimney being waterproofed.

What Kind of Damage Can Water Do to My Chimney?

According to the Chimney Safety Institute of America (CSIA), water damage around your chimney can lead to a vast array of damage, including:

  • Water-stained Walls
  • Collapsed hearth support
  • Cracked of deteriorated flue lining
  • Stained Chimney exterior
  • Rotting Wood
  • Rust

Protect Your Chimney from Water Damage – Inside and Out

A chimney that’s unprotected from the elements can become unsightly and dangerous. Inside and out,chimneys in our New England climate are exposed to harsh elements and water vapor. It is important to properly protect your chimney with products designed to provide long-lasting protection.

The Crown Chimney Team exclusively uses the professional line of ChimneySaver® waterproofing products. These products contain siloxane, which is proven to effectively bond with the silica in chimney masonry. One application of ChimneySaver® provides ten times the water repellency of typical sealers.  It also enables the chimney to breathe, which facilitates heat expansion, and carries a 10-year warranty.

Repellent versus Sealer

The professional-grade product that we use is a water repellent, not a sealer. This is an important distinction, because sealers remain on the surface of the chimney, and do not penetrate to protect the inside of the chimney, while repellents soak into the chimney and provide deeper protection.

Protect Your Chimney Crown

The masonry roof that covers the top of your chimney is called the chimney crown. It prevents water from seeping into the masonry below.  Costly repairs can result from cracks and water-damage to chimney crowns.

CrownCoat® is a flexible waterproof sealant that forms a flexible waterproof membrane when applied to the chimney’s entire crown. A professionally-installed application of CrownCoat® stops further water intrusion through the crown, and carries a 15-year warranty.

Crown Coat is specifically formulated to withstand the severe weather and thermal stress to which chimneys are exposed – especially in New Hampshire’s seasonal climate.