Friday, 14 March 2014

What is Roof Flashing?

What is flashing?
Flashing is a construction detail used to seal and protects joints in a building from water penetration. The joints created by the intersection of the roof and roof mounted structures and projections, such as parapets, hatches, skylights, chimneys, vent stacks, or towers, are among the most vulnerable areas of roofing systems. They constantly expand and contract in response to changes in humidity and temperature. Greater the number of such projections, greater the potential for leaks.


Roof flashing represents a very simple and intuitive engineering technique that has been known for hundreds of years. The whole idea depends almost entirely on gravity. If the flashing has been installed correctly, gravity will work with the flashing material to shed the water onto the regular roofing materials, where it is then directed harmlessly to the ground. Roof flashing is commonly used around chimneys, fan vents, plumbing vent stacks, and other items that project out of residential roofs.


Roof Flashing

1 comment:

  1. it says about different Energy Saving Coatings techniques.there are many energy saving techniques are in market that are cheap and affordable for everyone to implement in there houses or buildings to make their building energy efficients .which would be helpfull in reducing energy consumption in your buildings

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