Houston Pressure Washing
One of our Technicians will sometimes suggest that a chimney be pressure washed, especially if your chimney has stains or deposits. Our Pressure Washing service can be used prior to tuckpointing (masonry repair) … or simply just to improve the exterior appearance of your chimney.
These stains are often a purely aesthetic issue, but they can also lead us to diagnosis some bigger problems hidden within the chimney. Both the location and color of stains on a chimney can help determine the root cause of the stains.
A thorough inspection by us will help find any leaks or other problems that need addressing. Plus, you will know with our Pressure Washing Services that your chimney will be cleaned without damaging your brick or mortar.
What’s That On My Chimney?
Although chimney-cleaning methods vary depending on the type of stain, pressure washing is often a great solution. Here are some stains you may be seeing on the exterior of your chimney and what they could mean:
White stains: If you see a white powder-like substance on your masonry—almost looking like white mold—your chimney is likely stained with efflorescence, which is a crystalline deposit of water-soluble salts. Brick and mortar are quite susceptible to efflorescence; nevertheless efflorescence may be a sign of excessive moisture and may indicate that a chimney inspection is needed. We find that the appearance of efflorescence varies according to conditions like heat, wind, and humidity.
Green or black stains: Likely an algae stain, accumulated because of runoff from a chimney top.
Brown or red stains: These are likely streaks of rust originating from one of the metal components atop your chimney.
Black or brown stains: Cleaning your gutters out may remedy this. These stains also signal soot or creosote wash-down, indicating that your chimney equipment needs adjusting or is having a drafting problem.
To learn more about the chimney sweeping process, view the video below.