Place the leading edge of the first panel along this line.
Installing a metal roof end lap.
Place the first screw.
Use your neoprene washer head screws to secure the metal to the sheathing.
At this point chalk a line from ridge to eave.
Lap allowance 1 5 12 pitch to 3 12 horizontal.
Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof.
As a first line of defense against water damage it is important that the metal roof overlap be implemented correctly.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the roof.
Follow manufacturer s instructions for the sealant application.
Install the roofing screws vertically along each rib in the panel.
12 minimum overlap of the roll end.
Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.
Because of this you should start at the lowest part of the slope and work upward.
Install a corrugated roofing wall connector panel to a wall with roofing sealant when installing panels for a patio cover.
This helps to prevent water infiltration.
Panel installation should begin at the gable end of the roof opposite the prevailing rain bearing wind this will provide added assurance against wind driven rain being forced under the laps.
Tear the tape off at the start of the seam and begin taping again on the opposite side of the metal sheet.
Space the screws about 12 in 30 cm apart.
This helps in setting up the lap of the panels.
A basic rule of thumb for installing metal roofing is that the piece of roofing higher up on the slope should always overlap the one below it.
The panels overlap allowing water to flow from one panel to the next without being able to penetrate the area under the roofing panel.
Measure one panel width in from the roof edge.
Next you are ready to install the metal roof.
For exposed fasteners avoid over tightening the fastener.
4 apply a generous bead of waterproof roof caulk to both edges of every 6 inch wide.
6 minimum overlap of the higher course over the lower course vertical.
You can use 1 inch nails for the installation of eave flashing.
You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened.
The installation of metal roofing involves placing large metal panels on the roof.
How to lap metal roofing.
