How to Install Corrugated Roof Flashing

What You'll Need
Hammer
Metal Sheets
Steel Tape
String
Electric saw
Nail apron
Measuring Tape
Utility knife
Ridge Caps
Metal Roof Nails

Corrugated roof has been used for some time now. However, it has had a bad repute as a consequence of improper use of the material by warehouses and factories. Now, corrugated roofing is starting to become a favorite material of residential houses. Technology has allowed the quality of corrugated roofing to improve; metal plates used in this roofing material are cheap, strong and durable. Installing corrugated roofing is also easy - something any adult can perform.

Step 1: Do the Math

Determine how many metal sheets you need by sizing up the roof’s ridge length in inches; divide this by 44, or the standard width of a metal sheet. This will give you an idea on the number of metal sheet rows required. Size up the roof slope’s length in feet, as well as the distance of the edge to the roof top; divide the number by 6 to determine the number of columns of metal roof sheets needed. Multiply this by the amount of rows to determine the total of sheets needed.

After this, determine how much ridge caps are needed by measuring the roof’s circumference and the span of the ridges on the roof top in terms of feet; divide the number by 6 to determine the number of 6 foot ridge caps needed.

Step 3:  Begin the Roofing

Place the metal sheet at a corner of the room, preferably near the bottom of the roof’s lip. It must be coated by roofing felt. Secure the metal sheets by pounding nails into it. The nails should be put on the middle of the metal’s hump: the nails should not be driven into the humps close to the sheet’s edges. About 20 nails are needed for every metal sheet.

Put the next metal sheet next to the first one. The first hump of the two metal sheets should overlap: this allows the roofs to be strong and durable. The sheet must be nailed in place near the first metal sheet. Continue with the process until the final row has been completed.

Step 4:  Put the Ridge Caps

Place the ridge caps along the lower edge of the sheets, having a little curve over the roof’s lip. Put these into place to fasten the base of the sheets tightly and hide the corrugations. This also allows the roof to look better while preventing water from leaking in under the metal. About 40 nails are required for every six-foot long ridge cap.

Put the first metal sheet of the second row above the first sheet of the initial row. An overlap of about an inch should be enough to cover the first sheet. Nail the sheet and lay down the next sheet to overlap the second sheet, and so on.

Step 5:  Finishing Touches

Repeat the process as many times as required until the roof has been completely covered by the metal sheets. Use the ridge caps to line the slope edges and roof ridges.