So this guy reached out today. He swears we washed his house last year. I’ve got no record of him, or pics of it, so I’m guessing he has us mixed up with someone else… which is fine. If he had it washed last year, that’s one hell of a mess he’s got going for that time period.
That said, if this were vinyl it would be a piece of cake decent work, but he says it’s cedar. Not really sure about treating that without issue. Anyone?
Im with @Redjess on this. Thats the condensate line for the ac. Somebody cleared out that line and left a mess on the house or the evaporator coil has disintegrated and is slowly dripping down the house. Definitely not your problem but for x amount of dollars im sure you can fix it for him. Some people are always trying to blame someone else for their problems
F9 is an acid, and the acid is what attacks the rust. You could try multiple applications of a weaker acid, or charge them through the roof to have someone soft brush with a weak acid solution and rinse.
When you do wood restoration, the last thing you do is the acid to neutralize the ph. Then you flush with water. The bigger question is the paint. My problem with using oxalic is that it IMHO based on my experiences* tends to leave lighter colored paints with a yellowish tint. I’m saying this, but you probably already know, I would say I am removing the rust, but it might discolor or remove some paint.
Those are my suggestions----not solutions. If it was me, I would soft brush with the weak solution then step up if it didn’t work. Just watch the windows, obviously, so the acid doesn’t etch them. The pic makes it seem like it is all over the trim and those vent covers. It looks like white washed/painted cedar or it is very grey/silver based on what the pics look like on my PC…
There’s absolutely no upside to it. 1) He’s not going to want to pay you to send a couple of guys out there for a couple of hours plus the cost of chems. 2)At best you get most of it off but I’d be willing to bet that by the time you do, then that stained cedar will be a lighter shade. Then you’ll have to send a painter over there and hope they can get it matched close enough to so that whole side of house doesn’t need to be painted. At worse, you can’t get it all out of the wood and you’re still back at #2.
Tell him to get drain fixed and rec a good painter to him.
You can let him know upfront that that’s a possibility and that he may need to get a painter after. Be sure to word that in the estimate somehow that the stained cedar could lose it’s color, you’re not liable for that, and you recommend homeowner to paint cedar after.
You could run, which is what I would do or you just have him sign a waiver.
Honestly, I saw 1 of 2 outcomes when I posted this…
I came away with a little bit better way to explain why not
Racer or one of the other wood guys dropped a golden nugget
I was going to say no unless #2 happened. My last text with them said “I’ll see what our network of industry experts have to say about the cedar situation. I am afraid it’s not going to be a good result though.”