How to Replace Corrugated Roof Flashing

What You'll Need
Replacement roofing
Roof nails

Corrugated roof flashing has long been a common sight on the top of American homes, sheds, and outhouses. Despite this regular usage, corrugated roof pieces have a history of being considered bad material, or suitable only for factories and workshops. However, many homes still have these corrugated roof features, and if you have some flashing on your roof which is made of corrugated metal, then you may be wondering how to replace it, either with new corrugated metal sheets, or with some new roofing material. Putting new corrugating roofing on your home or outhouse can be a daunting experience, but getting this job done doesn’t need the assistance of a professional if you have some basic home improvement skills. All you have to do is follow a few simple guidelines to get the job done quickly and easily.

Step 1 – Removing the Old Flashing

The first step in this project is to remove the old flashing from around the top of the roof. This can be done by taking the metal nails out of the old roof. You will probably need to discard these nails, as they will have worn down in time, and can be seriously corroded. Stand on the ladder until you can reach the top row of nails. You should first pry the nails up with either the back of a hammer, or a screwdriver if they are particularly tightly sealed into the roof. Lift up the nails, and pop them out. Take each sheet in turn and carefully remove them from the roof. These sheets can probably be recycled or disposed of in an environmentally friendly way.

Step 2 – Measuring Out the New Sheets

Next you will have to use one of the old sheets of corrugated roof flashing to measure and cut the new sheets. Place the flattest sheet on the ground, and lay your new sheets over the top. Cut the new piece to match your old corrugated roof part. The flashing should be large enough to cover large sections of the roof at once, so try and get a good measurement.

Step 3 – Fix the Sheets

Once that is completed, you will have to take your first sheet up to the roof, and begin nailing it in. Place the first sheet in the top left hand corner, and the first nail slightly to the right of the precise point. Hammer the nail in tightly, and then take a second nail, and put it slightly below the corner. Hammer down firmly again. Repeat for all sheets until they are tight against the roof.

Step 4 – Finishing

Before you finish the project you will have to cover over any joins in your sheet with a later of roofing tape. This can be bought from any local home improvement store, and will be waterproof. Cover over the tape using a layer of silicone caulking, which will help to prevent water from getting under the tape, and into the roof of the building.