This helps to prevent water from sliding around the aluminum flashing and into the roof area.
How to put up flashing on a roof.
Measure the length of the porch roof joint to determine how much flashing you will need.
Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.
The metal flashing must overlap the material not the other way around.
Each flashing job is a little bit different and depends on the type of material that the exterior of your house is made of.
However the principles are the s.
How to install porch roof flashing step 1.
Lay the cut flashing down at the corner over a shingle that is already in place.
Coat the flashing with a zinc based primer followed by two or more coats of spray on rust preventive metal paint.
Ensure it sits flat and extends at least 8 inches above the shingles.
Step 3 install the flashing.
The remaining siding on the sidewall will overlap the step flashing and nail.
Install the step flashing when the siding is installed it should be tucked behind this piece and then consecutive courses lapped over it.
One common method is to lay the edge metal under the eaves membrane and over the rake.
If you already have faulty flashing installed you.
Two ways to flash roof edges.
Prepare the area where you will install the roof flashing.
Details concrete masonry roofing wrb flashing.
Gently hammer the 45 degree cut around the corner of the porch roof seam.
To get the best from the flashing you should fit of the sheet onto the side of the roof and the other half onto the building or addition which it is touching.
Next place your vent flashing on top of the membrane.
Required materials for this project roofing nails step flashing.
Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.
The corner cut should be facing upwards.
Step flashing on roof peak step three.
Bend the corner flashing tightly around the corner.
Nail it in place with two nails one on each side of the top edge.
