Blinking shields breaks as well as joints on the roof covering plane, which are or else susceptible to water infiltration. Due to the way roofing is constructed, these areas cannot be secured with caulk. 

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A conventional roof slop normally has a combination of the complying with types of flashing:

  • Valley Flashing: This is the type of blinking that most people are familiar with, as well as is generally seen on the roof covering valleys. Valley flashing are strips of metal formed like an inverted letter “T” that forms an upright barrier that prevents rainwater from going across one roofing aircraft to under another.
  • Constant as well as Step Flashing: These two kinds of blinking are installed with each other on walls, chimney stacks, dormers, as well as similar parts. Continual flashing is a solitary piece of flashing installed on the side alongside the roofing system’s side, while step blinking is set up perpendicularly on the sloped side. The last has “steps” that comply with the shingle overlaps.
  • Drip Side: This shields the roof covering edge from water seepage. It is a long strip of steel with an upside-down letter “L” account that quits rainwater from infiltrating the roof covering deck through capillary activity. It also helps boost the roofing edge against wind damages.
  • Rubber Boots: Also, referred to as air vent pipe blinking, a rubber boot is a conical kind of blinking that protects the base of air vent pipes as well as similar tube-shaped protrusions. Throughout setup, the slim end is cut to match the pipe circumference. Rubber boots for sloped roof coverings have matching angled bases.


Blinking typically does not last as long as the roofing they’re mounted on, which is why every roofing system usually needs new blinking at least once in its lifetime. Rubber boots, in particular, can deteriorate in time from continuous direct exposure to solar warmth as well as UV rays. Some flashing can be displaced by high wind or impact from wind-blown debris.

This is why every house owner requires to perform routine roofing examinations. Amongst the important things you need to look out for is whether blinking is in its best place. If they’re not, call your roofing contractor for repair services.

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Harry Nicholas

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