This helps to prevent water infiltration.
Installing a metal roof end lap.
Use your neoprene washer head screws to secure the metal to the sheathing.
Follow manufacturer s instructions for the sealant application.
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.
Measure one panel width in from the roof edge.
As a first line of defense against water damage it is important that the metal roof overlap be implemented correctly.
20 minimum overlap of the roll end.
You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened.
This helps in setting up the lap of the panels.
Place the first screw.
The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the roof.
Lay the panels on the ground the way you want them to be on the roof.
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.
Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.
Install a corrugated roofing wall connector panel to a wall with roofing sealant when installing panels for a patio cover.
How to lap metal roofing.
12 minimum overlap of the roll end.
Tear the tape off at the start of the seam and begin taping again on the opposite side of the metal sheet.
4 apply a generous bead of waterproof roof caulk to both edges of every 6 inch wide.
Space the screws about 12 in 30 cm apart.
6 minimum overlap of the higher course over the lower course vertical.
Because of this you should start at the lowest part of the slope and work upward.
At this point chalk a line from ridge to eave.
You can use 1 inch nails for the installation of eave flashing.
The installation of metal roofing involves placing large metal panels on the roof.
Place the leading edge of the first panel along this line.
Install the roofing screws vertically along each rib in the panel.
Synthetic metal roofing underlayment installation is no more complicated than if using traditional roof felt.
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.
Lap allowance 1 5 12 pitch to 3 12 horizontal.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
