Answer
Sep 12, 2023 - 01:37 PM
Yes we would recommend F9 Barc for Aluminum Siding Rundown,
It could be the paint or Aluminum Oxide so this is a great choice.
Spray the surface with water and if the rundown "disappears" until it dries and reappears when dry then is Efflorescence
And you should consider F9 Efflorescence/Calcium Remover
Aluminum Siding rundown when hosed down with a garden hose will still be visible on the surface when wet
Application:
First try 4 to 1 mix rate, as this is the most economical.
Mix in a trigger sprayer for small areas or for a side of a house use a pump up sprayer bottle
and lastly for big projects the ProTool Electric Sprayer
Spray the effected surface with the sprayer and let dwell for 2 to 5mins, the longer the dwell the easier the rundown will come off.
After the dwell period ...
Use a pressure washer Green or White Tip sized for about 2,000 PSI on your pressure washer
A 5 tip on a 4gpm 4,000 PSI pressure washer.
If this is not coming off as quickly as you would like ...
then, try 2 to 1 mix rate, some surfaces might require using the F9 BARC undiluted.
It may take a couple applications in heavy areas.
It could be the paint or Aluminum Oxide so this is a great choice.
Spray the surface with water and if the rundown "disappears" until it dries and reappears when dry then is Efflorescence
And you should consider F9 Efflorescence/Calcium Remover
Aluminum Siding rundown when hosed down with a garden hose will still be visible on the surface when wet
Application:
First try 4 to 1 mix rate, as this is the most economical.
Mix in a trigger sprayer for small areas or for a side of a house use a pump up sprayer bottle
and lastly for big projects the ProTool Electric Sprayer
Spray the effected surface with the sprayer and let dwell for 2 to 5mins, the longer the dwell the easier the rundown will come off.
After the dwell period ...
Use a pressure washer Green or White Tip sized for about 2,000 PSI on your pressure washer
A 5 tip on a 4gpm 4,000 PSI pressure washer.
If this is not coming off as quickly as you would like ...
then, try 2 to 1 mix rate, some surfaces might require using the F9 BARC undiluted.
It may take a couple applications in heavy areas.
