Recent content by derekcaldwell

Is there a product that instantly removes mildew off of houses other than bleach/Jomax. Here lately I have been cleaning houses with bleach/Jomax and my XJet. Yesterday, I cleaned a house and the wind picked up and took my mix and "tossed" it in the air. You could smell it on the other side of...

Does anyone know how to get rid of dirt dobber stains that are 20plus ft in the air on a side of a house composed of EIFS? Knocking them down is easy w/ X-Jet or red tip from a distance but can't get rid of the stain. Any suggestions?

I have attached some pics of some stains on some park columns I am supposed t oclean. These columns have, at the top, smooth concrete trim that are black, gray and full of algae. In the middle the columns are masonry brick. Then at the bottom they are white split faced concrete cinder blocks...

Can anyone tell me how to interpret the nozzle chart that is in the provided image? And once I understand the chart is it correct that I divide by 2 for my surface cleaner?

How do I interpret the nozzle chart? Can you explain how I interpret the nozzle chart? Once I understand the correct function of the chart what do I then do? Sorry to be such as rookie. One day I may actually be able to help somebody on this site but not yet.

How do I reduce my unit's psi? My salesman told me to not mess with the unloader valve as it could damage my pump. Should I just use different nozzles on my wands and surface cleaners or is there another way? Also do you know of a link to a nozzle chart? I did a search and the links went nowhere.

Is there a way to adjust the psi on a surface cleaner? I was told to not use my unloader valve on my pressure washer and instead use my variable wand. That is fine except that I need to reduce the psi on my surface cleaner. Is this possible?

Has anyone ever seen a red stain like the one in the picture? If so, what did you use to clean it with?

I've got a job cleaning walkways where others before me have cleaned. I have noticed surface cleaner ring marks, deep gum removal marks that bascially replace gum with gouged concrete. My question is how to prevent this? Is it more technique than equipment. I've got the equipment but quite...

I recently removed graffiti from a playground park. There was graffiti everywhere and all of it was removed EXCEPT for a stubborn area. That area is a concrete park bench. I applied taganator and tagaway several times but was unable to remove the paint. I'm frusterated that I was able to remove...

Thanks for your help guys. I will try all of your suggestions and reply back. I am glad I have this network for help. Maybe a few years down the road I can actually give some advice.

I have a job to remove stains from the back side of a shopping center. These stains are in several areas. Some of them are caused by the roof drains going into the parking lot. Some are nasty run-offs from the dumpsters. But there is a certain area (pictures attached) where the stain was caused...

I landed a big job cleaning walkways for a commercial property management company. However, now that I've begun the job they are asking questions about my methods. I'm using a Hot Water Steam LANDA Unit and everything seems to cleaning fine. The gum and tar are popping off and all dirt, mold and...

Concrete damage reply The concrete is about 2 yrs old. It had existing imperfections (some caused by previous pressure washer..i.e. wand marks) and mold/dirt. However, afterwards I could clearly see a long series of streaks where my surface cleaner made a path. The contractor has since paid me...

I recently performed a job where there was minor damage to the concrete walkways. Luckily, the owner is a contractor and didn't care. However, I might not be so lucky the next time. The problem was that there were two 300' stretches of concrete walkways where the concrete was cleaned using a hot...