Metal Roof Soft Washing: What’s Different From Shingle or Tile

Metal roofs should be soft washed just like shingle and tile, but the specific risk is different. The concern with metal isn’t granule loss or cracking: it’s damaging the protective coating or finish that keeps the metal from corroding.

Why is coating the main concern on a metal roof?

Most metal roofing has a protective coating or finish that prevents the underlying metal from corroding when exposed to Florida’s humidity and rain. High pressure or the wrong cleaning chemistry can compromise that coating, and once it’s damaged, the metal underneath becomes more vulnerable to rust and corrosion over time. This is a different failure mode than the granule loss shingle roofs face, but the underlying principle is the same: force and harsh chemistry cause damage the growth itself wasn’t causing.

Does algae look and behave the same way on metal as on shingle roofs?

Algae still grows on metal roofing in Florida’s climate, but staining patterns can look a little different than the streaking typical of asphalt shingle, since metal doesn’t have the same porous, granulated surface for algae to feed on directly. The buildup tends to be more of a surface film than the deeper staining seen on shingle, which soft washing addresses effectively either way.

Is a metal roof lower maintenance overall than shingle or tile?

In some respects, yes, since metal doesn’t have the granule-loss vulnerability shingle does, and many metal roofing systems are designed for long service lives. That said, the coating protection issue means metal isn’t maintenance-free either, and using an inappropriate cleaning method can undermine some of the durability advantages metal roofing is chosen for in the first place.

What should a homeowner with a metal roof specifically ask before hiring a cleaner?

Confirm the company soft washes metal roofing specifically and understands the coating consideration, rather than assuming all roof types get the same treatment. We adjust chemistry and technique for metal specifically, and if you’re not sure what type of coating your roof has, that’s a reasonable thing to ask your roofing installer or manufacturer directly before any cleaning happens.

Frequently Asked Questions

Can high pressure actually strip a metal roof’s finish?

Yes, this is the main risk with metal roofing specifically, which is why we soft wash metal the same way we do shingle and tile, just with attention to coating-safe chemistry.

Does a metal roof need cleaning as often as shingle?

Often less frequently, since metal doesn’t have the same granule-based vulnerability to algae feeding directly on the material, though this varies by specific coating and shade conditions.

Will cleaning affect my metal roof’s warranty?

Using an inappropriate method could potentially affect a coating warranty, which is why confirming a company’s approach to metal roofing specifically is worth doing before hiring.

Is metal roofing common in Brandon?

It’s less common than asphalt shingle in most established neighborhoods but does appear on some homes and is increasingly chosen for new construction and replacements.

Ready to protect your metal roof’s coating? Call Elite Pressure Washing Brandon on +1 (656) 253-1990 for a free quote.