Dos and Don’ts for Maintaining Metal Roofing

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Dos and Don’ts for Maintaining Metal Roofing

custom metal roof turret

One of the primary selling points for metal roofing is the generally low maintenance associated with it. With normal conditions, a good metal roof will outlast just about any other material you stack up against it.

At Double-T, we offer metal roofing packages for both contractors and home owners alike. As we come into the colder parts of the year, the few maintenance items that are part of the deal with a metal roof become a bit more important – here are some basic dos and don’ts for metal roofing maintenance.


Here are a number of things you can do to help extend the lifespan of your metal roof:

  • Keep your eye out for stains, scratches, abrasions, grease or dirt. If you don’t have an easy way of getting up there, scan the roof surface at least twice annually with binoculars. Try to do the same after severe storms, and look for any obvious signs of seams that are separated.
  • If dirt or stains remain after rainfall, gently wash the roof with a well-soaked cloth or a soft sponge. For cleaning solution, use detergents with limited amounts of phosphate, or look to cleaners with solvents. If mildew or fungus become issues, mix a cup of bleach and a cup of mild dish soap with five gallons of water, then use this solution as a solvent.
  • Wash panels from top, and work down to the bottom. Rinse the surface with clean water.
  • Remove any metal hips, shavings or random particles you find loose in the coating.
  • Cover and scratched or abraded areas with touch-up paint.
  • Keep tree branches clear of the roof by at least six feet to avoid scratches and debris.
  • Keep valleys and gutters clear of all leaves and other debris – most find it’s beneficial to perform this cleaning at least twice a year, often in fall and spring.


Here are some things to avoid while maintaining metal roofing:

  • Don’t use scouring powders or industrial solvents. These can damage the film or increase the accumulation of dirt on the roof.
  • Never allow different types of metal to come into contact with your roof. Chemical reactions between metal types can lead to corrosion.
  • Don’t spend too much time walking on the panels. Most metal roofs can be walked on without causing damage, but it’s not a good habit to be in regularly.
  • Don’t paint your home using a sprayer, as overspray is likely to be blown onto the metal roof. Once this happens, it’s basically permanent – there’s very little you can do to remove it.

For more information on maintaining a metal roof, or to find out about our other services including windows, siding and rain gutter repair, call the experts at Double-T today.