Power Washing and Roof Cleaning Forum

BlueRidge · Approved Exterior Cleaner

Galvalume

John Aloisio · Approved Exterior Cleaner

Brett,

is it painted or just bare galvalume?

BlueRidge · Approved Exterior Cleaner

John Aloisio wrote:
Brett,
is it painted or just bare galvalume?

Bare finish. I was planning to do a test on a small structure.

Bryan P · Approved Exterior Cleaner

I've never cleaned it but installed a lot of it when I was a roofer. Used to buy it under two names. "Galvalume" which was bare. "Acrylume" which looks the same but is coated with a clearcoat.

BlueRidge · Approved Exterior Cleaner

Bryan P wrote:
I've never cleaned it but installed a lot of it when I was a roofer. Used to buy it under two names. "Galvalume" which was bare. "Acrylume" which looks the same but is coated with a clearcoat.

The customer had it installed when he built the house and says it's Galvalume so I am hoping it will clean up like other metal roofs.

John Aloisio · Approved Exterior Cleaner

It should clean up ok, but a test spot is necessary. I did one a few year ago and the cut edges and work seams turned a little rusty after the cleaning. It came back after a few rains but was a little odd. It was the steel base layer showing through the Aluminum Zinc coating. On cut edges and field penetrations usually the steel is bare and can weather differently than the other coated parts.

BlueRidge · Approved Exterior Cleaner

John Aloisio wrote:
It should clean up ok, but a test spot is necessary. I did one a few year ago and the cut edges and work seams turned a little rusty after the cleaning. It came back after a few rains but was a little odd. It was the steel base layer showing through the Aluminum Zinc coating. On cut edges and field penetrations usually the steel is bare and can weather differently than the other coated parts.

Thank you John.

SprayWash · Approved Exterior Cleaner

Call me!!!!!

BlueRidge · Approved Exterior Cleaner

SprayWash wrote:
Call me!!!!!

You called me. Thank you Ray!