The gravel stop prevents material on the roof from falling off and also serves as a shield to protect the roof from damage.
How to use plastic flashing on a roof.
At this point the piece of flashing that bends around the chimney will not be attached to anything.
The top piece that bends around the chimney is left unattached.
If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend.
Step flashing on roof peak.
Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.
Gravel stop flashing helps protect the fascia from water damage just like the drip edge.
Bend the corner flashing tightly around the corner.
Pieces of step flashing are bent at an angle relative to the roof pitch and installed along the full length of the sidewall where it joins the roof deck.
And you have to do this process again and again around the length of the chimney.
Under the base part of the flashing use plastic roofing cement and finish attaching it to the roof with galvanized roofing nails.
Roof shingle over step flashing.
This is definitely the cleanest way on how to attach a patio roof to an existing house.
And when the flat roof is below the sloped one flashing is applied on the flat one and extend upwards to the slope.
When fitting cover flashings to a flat roof like the one pictured bottom right there is no need for the third covering angle of lead the lead is simply cut just above the flat roof to stop capillary action and the flashing cutting into the flat roof itself.
It may be quite a labor but it pays off with a strong roof.
However the principles are the s.
You continue this process around the length of the chimney cutting each step flashing to fit.
Once you perform the step above use plastic roof cement under the base part of the flashing.
The flashing should be partially exposed along the wall.
This article describes the selection and installation of peel and stick flashing membranes used on building exteriors to seal housewrap joints and to seal against air or water leaks around windows doors or other openings.
Each flashing job is a little bit different and depends on the type of material that the exterior of your house is made of.
Horizontal plastic closure strips these.
Peel and stick flashing tape.
