Roof flashing is a very important part of a house.
Roof flashing part.
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When working on paint colors i have noticed that houses with newer roofs seem to have more flashing than houses with older roofing.
Two part flashing systems consist of a base flashing often step flashing that is laced into the finished roof material.
This is also used in other places where the roof covering is interrupted or terminated.
This ensures that rain always meets a flashing surface that directs it downwards.
Shingles though are only part of the whole roof system.
I m sure there are very good reasons for this change but that doesn t matter here.
Flashing refers to thin pieces of impervious material installed to prevent the passage of water into a structure from a joint or as part of a weather resistant barrier system.
Drip edge more commonly known as eave flashing when referencing metal roofs pronunciation.
Roof flashing is now more noticeable than it used to be and that s not good.
When the roof materials naturally expand and contract with weather changes the two pieces can move so the whole system stays secure.
What is the purpose of flashing on a roof.
In modern buildings flashing is intended to decrease water penetration at objects such as chimneys vent pipes walls windows and door openings to make buildings more durable and to reduce indoor mold problems.
There is another benefit to two part flashing.
It is designed to protect the underlayment and eave.
The second piece should not be fastened to the base so the two pieces can move against each other independently when the roofing materials shift with seasonal change.
This takes place at all edges the perimeters penetrations walls and valleys.
Flashing should overlap the roof covering material but on asphalt shingle roofs for aesthetic reasons the part of the headwall flashing that extends down over asphalt shingles is often covered with a course of shingle tabs.
Flashing part 1 by kenton shepard and nick gromicko cmi the purpose of the series mastering roof inspections is to teach home inspectors as well as insurance and roofing professionals how to recognize proper and improper conditions while inspecting steep slope residential roofs.
The unsung hero of the operation is roof flashing.
The base is then covered by another metal flashing piece lapped over it.
Roof flashing is a thin layer of metal sheeting used to direct water away from seams and joints where moisture could penetrate the roof and cause water damage.
The term drip edge is a piece of metal placed on the eave of a roof to help control and direct the flow of water into the gutter.
Plus it is notoriously tough to install flashing around a chimney.
