Cleaned four fire stations this week that were identical. This happened on one location, doors facing the sun, proportioners dialed in at one and a half percent. Clean each building exactly the same. this happened on three or four doors on the west side. Why did they streak? Did the product dry in the sun? Also went back and treated then after, and it didn’t change anything.
I also think they are not oxidized.I’ll ran my finger across it.And it didn’t come off.
Did it dry some or did you rinse quickly after. I usually wet garage doors prior to applying chems if they need chemical. I’ve seen others have that problem too, especially the oxidized painted doors. On my own garage door I used some red raider or degreaser to remove the oxidation. It looks great…..
What happenswhen it dries? Even treating it a 2nd time didnt fix it. And that degreaser will fix the streaks?
It can streak sometimes if the chemical dries on there. With my garage I treated with red raider and used a soft brush to remove the oxidation. Can’t say it will work on that one, depends too on how good the paint is currently on it. I’ve seen some guys remove down to the metal…..
Would any degreaser work? Or something like barc?
They’re not going to care but it’s a great lesson. The dirtiest areas are always on the shady side. I soap the shady side first & rinse the sunny side first. In hot / sunny situations it’s a great idea to pre wet the sunny side to cool it down so the soap doesn’t flash evaporate on contact. I’ve never used anything that other than SH & surfactant.
Can you elaborate a little on the flash evap? Is there no way to get rid of it?
Just don’t let the soap dry. It will dry faster on hot, sunny surfaces so keep it wet until it does the job & rinse. The sunny side is never as dirty so it doesn’t need to dwell as long.
This time of year are you still getting that (flash evaporation)? I have snow and not getting above 35F for the next week.
My buddy called me, some moron didn’t put his pool away yet so we are closing it Friday in freezing temps. Should be fun. I asked him if he was charging the guy triple normal rates, plus a freeze your butt off bonus. Just know I am going to get soaked blowing out those lines, hopefully he has the water heater set on inferno on that pool.
I wish I was dealing with flash evaporation right now. Tell them to wait a few weeks & they will have an ice skating rink, free of charge. It shocks me that folks willingly live in such freezing hellscapes. TN is bad enough.
Located in Florida. It was windy but not hot. If yall can think of a product to try I’d appreciate it
I don’t “know” the answer to your question, but I do know what some of the kids on firetrucks do. They open the doors and let the truck run in the bay. That exhaust goes up and winds up on the door. Same thing happens in my area with all the truck shops, the doors have exhaust all over them. I would treat it as fall out.
Having said that, my process is if streaks happen, don’t ever leave. Fix it then. My first response is to re wash. If that doesn’t fix it, then I resoap and agitate with a brush lightly, then rinse thoroughly. If that doesn’t work then I might use a degreaser. If that doesn’t work then I might move on to an oxidation remover or a very weak acid based product. Acid might remove paint, depending on what kind of paint it is, how long it has been there, and how many times it has been brushed. If it looks thin (can kind of see through it to the base coat) then no acid and brush very light.
