At this point chalk a line from ridge to eave.
Installing a metal roof end lap.
As a first line of defense against water damage it is important that the metal roof overlap be implemented correctly.
Because of this you should start at the lowest part of the slope and work upward.
4 apply a generous bead of waterproof roof caulk to both edges of every 6 inch wide.
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.
You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened.
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.
How to lap metal roofing.
Next you are ready to install the metal roof.
Use your neoprene washer head screws to secure the metal to the sheathing.
The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the roof.
This helps in setting up the lap of the panels.
Install the roofing screws vertically along each rib in the panel.
This helps to prevent water infiltration.
Install a corrugated roofing wall connector panel to a wall with roofing sealant when installing panels for a patio cover.
Tear the tape off at the start of the seam and begin taping again on the opposite side of the metal sheet.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
20 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.
Lay the panels on the ground the way you want them to be on the roof.
12 minimum overlap of the roll end.
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.
You can use 1 inch nails for the installation of eave flashing.
Follow manufacturer s instructions for the sealant application.
Place the first screw.
The installation of metal roofing involves placing large metal panels on the roof.
Measure one panel width in from the roof edge.
Place the leading edge of the first panel along this line.
6 minimum overlap of the higher course over the lower course vertical.
Space the screws about 12 in 30 cm apart.
