How to Repair a Corrugated Tin Roof

What You'll Need
Metal shears
Roofing mesh
Urethane roof cement
Putty knife
Wire brush
Warm water
Mild detergent
Scrubbing brush
Mineral oil
Paper towels
Old towels

Perhaps you have a corrugated tin roof in your home. This isn’t one of the common metal roofing materials. The use of steel and iron for roofing appears to be more widespread than tin. However, a tin roof isn’t without its benefits. Tin is one of the cheapest metals you can choose for roofing. It is also highly durable. Tin doesn’t suffer from corrosion unlike iron and steel. Older corrugated tin roofs are likely to show signs of damage. This includes rust and holes which create leakages. Fortunately, it doesn’t take too much to repair the roof. Below are the steps you can take when you repair.

Step 1 – Sweep

It is best to sweep your tin roof first. This will enable you to see the entire surface more clearly and identify the areas in need of repair.

Step 2 – Rust

Use a wire brush to scrape away rusted areas on your roof. Strive to clear away as much of the rust as you can. Some holes may have developed in rusted spots and it is best to repair a clean surface. For rust that proves difficult to clear, apply some mineral oil onto the rusted areas with paper towels. Allow the oil to soak in well for about 30 minutes. Scrub the area with a brush to facilitate rust removal.

Step 3 – Wash

Take some warm, soapy water and wash the roof surface thoroughly. Use a scrubbing brush to get rid of the dirt and grime. Rinse well so that no traces of soap are left behind. Dry the roof with old towels then allow about an hour for it to air dry.

Step 4 - Holes

Use the metal shears to cut out square patches from the roofing mesh. Be sure that the patch covers the worn out area entirely and has a generous allowance all round. Apply some urethane roof cement around the damaged area. Place a mesh patch onto the roof cement so that it completely covers the damaged area. Press down the mesh so that it conforms to the wavy pattern of the corrugated tin. Spread some more roof cement around the mesh patch. Smooth it in to secure the patch and create a uniform appearance. Allow the repaired sites to dry completely.

Step 5 – Primer

Apply a rust-resistant primer over the entire roof surface. It is best to work from the top and move across as you steadily progress downwards. It may take some time due to the corrugated pattern of the roof. Allow some time for the primer to dry completely.

Step 6 – Paint

Use an acrylic-based paint to protect your tin roof from rust and other damages. Application of 2 to 3 coats will help to fortify your roof considerably. However, you must allow each coat to dry well before you apply another coat.


  • Select a day when the weather is calm for roof repairs. It isn’t safe to undertake repairs during wet or windy weather conditions.
  • Wear leather gloves and safety glasses for protection against injuries by metal particles.