Installing A Metal Roof End Lap

Lay the panels on the ground the way you want them to be on the roof.

Installing a metal roof end lap.

At this point chalk a line from ridge to eave. Place the first screw. Lap allowance 1 5 12 pitch to 3 12 horizontal. Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.

Place the leading edge of the first panel along this line. The eave flashing or edging is just the steel metal strips used to cover the entire perimeter of the roof. As a first line of defense against water damage it is important that the metal roof overlap be implemented correctly. Next you are ready to install the metal roof.

Install a corrugated roofing wall connector panel to a wall with roofing sealant when installing panels for a patio cover. You are essentially sealing off the metal roof with this flashing and you need to make sure that is securely fastened. Install the roofing screws vertically along each rib in the panel. The installation of metal roofing involves placing large metal panels on the roof.

12 minimum overlap of the roll end. This helps in setting up the lap of the panels. You can use 1 inch nails for the installation of eave flashing. 6 minimum overlap of the higher course over the lower course vertical.

Use your neoprene washer head screws to secure the metal to the sheathing. 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. Tear the tape off at the start of the seam and begin taping again on the opposite side of the metal sheet. 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. Because of this you should start at the lowest part of the slope and work upward. For exposed fasteners avoid over tightening the fastener. This helps to prevent water infiltration.

20 minimum overlap of the roll end. Follow manufacturer s instructions for the sealant application. Synthetic metal roofing underlayment installation is no more complicated than if using traditional roof felt. 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. The panels overlap allowing water to flow from one panel to the next without being able to penetrate the area under the roofing panel.