What is Chimney Saver?

Midtown Chimney Sweeps stands ready to apply the chimney saver product to the exterior of  your masonry brick chimney to retain original coloring, and provide years of water resistance weather protection. According to the Brick Industry Association, chimneys require special attention and maintenance to prevent costly damage caused by water penetration. Because chimneys project above the roof line, they are vulnerable to the elements. Nearly every chimney you encounter has signs of water damage and would greatly benefit from an application of Chimney Saver! The first step is to determine the cause and then find the best corrective measures. Chimney Saver, the first product developed specifically for chimneys, has been used successfully by leading chimney professionals for nearly 20 years. Chimney saver reduces water penetration into the masonry materials by 99.9%, according to ASTM tests conducted at the University of Wyoming. Chimney Saver is a commonly used product by Midtown Chimney Sweeps in cold, harsh, and moist areas of the country.

Benefits of applying Chimney Saver Protectant by a Midtown Chimney Sweeps Professional:

  • Chimney Saver is a Water-Based Water Repellent.
  • Chimney Saver is a penetrating water repellent which contains a proprietary modified siloxane.
  • Chimney saver absorbs into masonry, brick, stone and cementous products up to 1/4 inch or more depending on surface porosity and moisture content at the time of application.
  • Chimney Saver reacts with the minerals in masonry bricks in the presence of ultraviolet light and atmospheric moisture. This reaction forms strong permanent bonds beneath the surface and creates a hydrophobic zone that prevents water molecules from penetrating, while allowing free migration of water vapors.
  • Chemical bonds formed in this process allow Chimney Saver Water-Base Water Repellent to become an integral part of the substrate and provide long-term water repellent protection.
  • Chimney Saver water repellent is a brick sealer for leaking chimneys that prevents water penetration.

Moisture from a variety of sources is always present in masonry and concrete. Sealers and silicone coatings form a water resistant surface film which traps water vapors inside. If these vapors cannot escape, they will contribute to spalling, scaling, deterioration, and freeze-thaw damage. But our Certified Midtown Chimney Sweeps technicians use chimney saver to help you avoid these damages. Chimney Saver is 100% vapor permeable – a non film-forming water repellent that penetrates and lines masonry pores.

Why Use a Chimney Protectant like Chimney Saver?

Water on the outside of the chimney penetrates, or absorbs, into the masonry stone and brick and then freezes. This literally pops off the top layer of the brick (especially red clay bricks). It chips off the brick in small chunks. You may be most familiar with this seeing concrete driveways in cold climates have a chipped surface creating puddles, which in turn collect water and facilitate the freeze-thaw cylce again. On roadways we refer to these rapidly deteriorating surfaces as “pot holes”. This is called spalling. It can be easily prevented by applying a siloxane or silane based water resistant product over the vertical faces of the chimney. Chimney saver is far different and far better than water-proofing compounds for several reasons.

Why does Midtown Chimney Sweeps not recommend waterproofing agents for chimneys?

  1. The foremost reason is simply that no waterproof agent externally applied can seal 100% of the surface area. Therefore moisture can still get behind the waterproof coating on the vertical surface and pool and freeze on the bed joints of the brick work (the bed joint is the technical name for the horizontal portion of a masonry joint between bricks) or soak into the clay- leading to spalling again. (Thompson’s Water Sealer is an example of a waterproofing agent that is less than ideal for masonry surfaces).
  2. The second reason is that waterproofing sealants form external membranes on the masonry surface that result in UV deterioration and eventual discoloration and peeling and chipping and unsightly flakes. So you end up with something like a clear veneer peeling off your chimney sometimes like a wood varnish will peel off of a beautuful wood door after a few years of exposure.

A water resistant material like chimney saver, such as that applied by a Certified Midtown technician, will be a real chimney saver!

So when you need your chimney protected from rain and water, call the Midtown Chimney Sweeps team today!