Installing A Metal Roof End Lap

Install the roofing screws vertically along each rib in the panel.

Installing a metal roof end lap.

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. Be sure the larger edge is laid so that the small edge of the next panel will overlap 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.

6 minimum overlap of the higher course over the lower course vertical. This helps in setting up the lap of the panels. Tear the tape off at the start of the seam and begin taping again on the opposite side of the metal sheet. At this point chalk a line from ridge to eave.

12 minimum overlap of the roll end. 20 minimum overlap of the roll end. Place the first screw. Lay the panels on the ground the way you want them to be on the roof.

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. For exposed fasteners avoid over tightening the fastener. Because of this you should start at the lowest part of the slope and work upward. 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. Use your neoprene washer head screws to secure the metal to the sheathing. The installation of metal roofing involves placing large metal panels on the roof. 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.

Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are. Lap allowance 1 5 12 pitch to 3 12 horizontal. Measure one panel width in from the roof edge. Follow manufacturer s instructions for the sealant application.

Next you are ready to install the metal roof. Synthetic metal roofing underlayment installation is no more complicated than if using traditional roof felt. How to lap metal roofing. 4 apply a generous bead of waterproof roof caulk to both edges of every 6 inch wide.

Place the leading edge of the first panel along this line. Space the screws about 12 in 30 cm apart.