How to Fix a Sheet Metal Roof

Written by april dowling | 13/05/2017
How to Fix a Sheet Metal Roof
Sheet metal roofs can last for several decades with minimal repairs. (roof image by Andrey Rakhmatullin from

The durability and longevity of sheet metal makes it a popular roofing material. Sheet metal consists of large flat metal panels that are shaped into roofing materials and coated with metal finishes. While most sheet metal roofs require very little maintenance, they occasionally become damaged from harsh weather conditions, rust or other calamities. Older sheet metal roofs are more likely to develop damage than newer metal roofs, due to advances in manufacturing. Repair damaged sheet metal roofs promptly to prevent leaks and further structural damage.

Put on work gloves and safety goggles for protection. Cut a patch out of matching sheet metal, using metal shears. Make the metal patch large enough to completely cover the damaged area.

Cut off the corners of the metal patch with the metal shears. Fold down all four sides of the patch to create a rectangle.

Apply soldering flux directly to the folded edges of the patch and the damaged roof surface. Use the appropriate flux for your type of sheet metal roof.

Lay the metal patch over the damaged area of the roof with the folds underneath. Place two bricks on the metal patch to weigh it down flat.

Apply solder around the perimeter of the metal patch, where the two metal surfaces meet. Do not leave any gaps.

Heat the solder around the entire perimeter of the patch with a soldering gun until the solder melts. Follow the manufacturer's instructions on the soldering gun for proper use.


Do not fix the sheet metal roof during stormy, wet or windy weather; it is dangerous.

Tips and warnings

  • Do not fix the sheet metal roof during stormy, wet or windy weather; it is dangerous.

Things you need

  • Work gloves
  • Safety goggles
  • Sheet metal
  • Metal shears
  • Soldering flux
  • 2 bricks
  • Solder
  • Soldering gun

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