Yellow brick / grout


I did a house wash and the guys main concern was this yellowish brick, any tips on how to get rid of the color? I hit it heavy with SH but no luck, thanks

Looks like rust or maybe efflorescence. Might need to hit with F9 Efflo and then F9 BARC. Curious what others think as well.

Looks like rust. Try BARC.

Looks like rust to me too.

F9 barc . Charge good

damn i read this a couple hours after buying f9 double eagle to try. do you think this will work ok? im planning on going back to the house and hitting it with the pump sprayer.

No, Double Eagle is a degreaser. It might if somebody sprayed vegetable oil on the brick and that’s what that yellow color is. :grin:

Do you have any Oxalic? How about Muriatic? Aluminum brightener? Nothing works like F9 Barc but other acids sometimes do. Go to a big box store and in the painting area you’ll see wood brightener. That’s oxalic acid. You’ll pay more for it but it might work. They should have muriatic acid too. Be careful with it and don’t let it dwell long. Same with aluminum brightener.