Warehouse ceiling cleaning question!

[mrotto]

dont know if this is the right forum, but I have a question about the most efficient way to clean this ceiling

14 foot ceiling in a warehouse
all metal
need to clean prior to painting
power wash is not practical
3000 square feet

 

[Jezika]

We clean ceilings and it is a process. We have specific equipment but when we started 12 years ago we did it by hand. Spray bottle (careful with solution choice as to not damage the metal) and wipe with microfiber cloth by hand (dust areas with microfiber prior to cleaner) any areas not accessible by hand is where it gets tricky. Too much to explain hope I helped though (we have extention poles, low pressure machine, etc)

 

[mrotto]

thought I would follow up on this. Demo is done and the heating contractor is putting new ductwork in so I had to clean as much ceiling as I could. Used 50/50 Simple Green mix applied from a MultiSprayer with upholstery tip.

Seemed to work great!

 

[keep it clean]

thought I would follow up on this. Demo is done and the heating contractor is putting new ductwork in so I had to clean as much ceiling as I could. Used 50/50 Simple Green mix applied from a MultiSprayer with upholstery tip.

Seemed to work great!View attachment 102300

Looks like it worked for you. I would have used probably liquid tsp. Its ready for paint right after. Not having to worry about residue. I use either liquid or powder for paint prep. But sometimes you gotta start with a degreaser which simple green would have been my choice also.
Looks good

Fwiw
Powder tsp also serves as a de glosser. Good for paint prep. Not so good if just using for cleaning glossy surfaces.