Like most regions of the country, New England is experiencing a slow start to winter. Your chimney, even when not in use, is still affected by the weather. Our customers in Boston, North Shore, and Portland can expect temperatures to drop toward winter lows by the end of November. In order to avoid winter damage, homeowners should understand how the chimney works, and how water affects masonry.
Most winter damage is actually water damage. Water simply acts differently in the winter, causing more damage, and wreaking havoc on masonry.
The Freeze/Thaw Cycle
When water penetrates the masonry, it seeps into cracks and voids. As the chimney cools or temperature drops, the water freezes, expanding and breaking apart the masonry. When the chimney warms up again, the water melts and moves further into the damaged masonry. This process continues throughout winter, damaging the chimney itself, and the rest of the system.
Water will ruin a masonry chimney from the inside out. It causes rusted parts and components, stained walls, deteriorated flue lining system, and more. A chimney leak can even cause a leak in any other part of the house when water runs through floors and walls, costing in repairs and even causing respiratory issues when bacteria grows in walls and flooring.
Common winter masonry damage includes spalling bricks and mortar. Spalling masonry is when the mortar between bricks cracks and falls away. Homeowners might not notice spalling masonry until pieces of mortar or whole bricks fall into the yard! This is not only a hazard, but allows water into the system to cause damage. A certified chimney sweep can repair spalling masonry through a process called tuckpointing, or re pointing. First, the technician removes the affected mortar, then replaces it with new mortar. This job must be done meticulously, because if the new mortar is not the same consistency and strength as the old, it can result in weakened masonry. If the color is off, it can also affect the visual aesthetics of your chimney.
When you have a chimney, it’s important to protect it from winter damage, including spalling and water damage. You can prevent this occurrence by scheduling your annual chimney inspection with Billy Sweet Chimney Sweep. When your chimney is inspected, your technician can report weaknesses and repair them before cold weather hits. You can also schedule chimney waterproofing to protect your masonry against water damage. This industrial water repellent forms a barrier that keeps water out, while letting vapors escape. When it comes to prevention, waterproofing is a great investment, and is long-lasting.
To schedule you inspection, preventative services, or repairs, call Billy Sweet today. Call 617-469-4528 and talk to a chimney expert about protecting your chimney from the cold.