Chimney counter flashing
Installing a counter flashing against a chimney is task that will prevent any water from infiltrating into your home through the roof. Counter flashing will also increase the lifespan of your chimney masonry.
Materials and tools
- 4 inch grinder with masonry blade
- Extension cord
- Safety glasses
To install a counter flashing, you must form what is known as a reglet.
Installing the counter flashing is simple. You just have to place it in the slot where the mortar joint has been removed and carefully bend it over the step flashing. Never use aluminum for counter flashing. It is best you use stainless steel metal or copper.
To cover the step flashing properly, the counter flashing should be at least 4 inches wide.