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Theย #1 choice for masonry cleanersย and hard surface care products for thousands of contractors, architects and engineers nationwide since 1939.

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Colleen Peters, Product Support Specialist
36 years of experience

HARD SURFACE CARE

Where to buy and product support

STAIN IDENTIFICATION SUPPORT

Send us a pic of your #weirdmasonrystain or tag us on Instagram for help.

This week's #WeirdStain was spotted at a church in the Kansas City area. Think you know what's causing these dark streaks? As always, all correct guesses will be eligible for our weekly prize.

#WeirdStainWednesday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain
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#WeirdStains deserve a holiday too. We're taking a few weeks off of this contest and we will return on Wednesday, Jan. 13. Meanwhile....
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๐‘พ๐’† ๐’”๐’•๐’Š๐’๐’ ๐’๐’†๐’†๐’… ๐’–๐’”๐’†๐’“๐’” ๐’๐’Š๐’Œ๐’† ๐’š๐’๐’– ๐’•๐’ ๐’”๐’–๐’ƒ๐’Ž๐’Š๐’• ๐’˜๐’†๐’Š๐’“๐’… ๐’”๐’•๐’‚๐’Š๐’๐’” ๐’‡๐’๐’“ ๐’•๐’‰๐’Š๐’” ๐’ˆ๐’‚๐’Ž๐’† ๐’•๐’ ๐’Œ๐’†๐’†๐’‘ ๐’ˆ๐’๐’Š๐’๐’ˆ. If you see any weird masonry stains out there, take a quick picture and DM or tag us! Thanks everyone, and happy holidays.
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#WeirdStainWednesday #WINSday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain
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Looking through old vacation photos led one of our staff members to spot this week's #WeirdStain. Can you name it? Submit your best guess for a chance at one of our NEW prizes. Good luck.

#WeirdStainWednesday #WINSday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain #WeirdStain
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What's going on here? This week's #WeirdStain is another one spotted by a PROSOCO employee on a walk near her home in Kansas City. Think you know what's causing this odd pattern? Hit us with your best shot. As always, all correct guesses will be eligible for our weekly prize.
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#WeirdStainWednesday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain
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This week's #WeirdStain also comes to you from the campus of UMKC. What is this stain and how did it get there? All correct guesses will be entered to win this week's prize. Due to the Thanksgiving holiday this week, our winner will be selected on Monday, Nov. 30. More time to get your guesses in! Good luck.

#WeirdStainWednesday #WINSday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain
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This week's #WeirdStain was spotted by a PROSOCO employee on a recent stroll on the campus of nearby University of Missouri-Kansas City. Think you know what it is? Submit your best guess in the comments for a chance to win one of our NEW prize giveaways! Good luck.
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#WeirdStainWednesday #WINSday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain #WeirdStain
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This week's #WeirdStain comes from Sarah Holder, PROSOCO's preservation and technical training specialist. Can you name what's causing these dark spots on this buff-colored brick? As always, all correct guesses will be eligible for our weekly prize. Bonus: Can you also name this brick-bond pattern?

#WeirdStainWednesday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain
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This week's #WeirdStain was spotted on a recent jobsite visit by a PROSOCO staff member in the Chicago area. What is this stain and how did it get there? All correct guesses will be entered to win this week's prize. Good luck!
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#WeirdStainWednesday #WINSday #WeirdStainWINSday #WeCanCleanThat #HardSurfaceCare #DirtyMasonry #Restoration #Masonry #Architecture #Architect #Construction #Builder #GeneralContractor #ContractorsOfInsta #Build #Prosoco #ProsocoProject #AskProsoco #WeirdMasonryStain
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Here are the people who know how to take better care of masonry facades.

PAINT STRIPPING MADE EASY, EVEN IN SOCAL

It took nearly 30 tries before Bill Seidel found a suitable paint stripper for a six-story building in downtown LA.

CLEANING TERRA COTTA

M-A Building & Maintenance wanted a cleaner that was going to do the job but wasnโ€™t going to harm windows.

RESTORING A DEFACED MONUMENT

Pat Sullivan saw the story on the evening news, he knew he could help.