Historic Resources Committee

Cathedral Stone Products: masonRE Latex 20 is your answer:
https://sweets.construction.com/Manufacturer/Cathedral-Stone-Products--Inc--NST1121/products/Latex-Based-Cleaner--MasonRE-Latex-20----1-Gallon-NST469100-P
The company is very helpful for all your masonry repair, cleaning, and coating needs: info@cathedralstone.com

------------------------------
Michael Blaes AIA
Principal
Blaes Architects
Webster Groves MO
------------------------------

Original Message:
Sent: 12-18-2019 08:01
From: Grace Smith
Subject: cleaning masonry

I need to recommend a cleaning method to remove asphalt soot from masonry - brick, limestone, and terra cotta.  The building I'm working on is very near an industrial site where asphalt is made.  The masonry was gently cleaned about 20 years ago when an addition was added. It already needs to be cleaned again, including the addition.  Haven't found a good product that is gentle to the masonry, but will remove the oily asphalt soot.  Any recommendations?   thank you!

Grace A.M. Smith, RA, LEED AP
Designsmiths
616-866-4089

Grace,

I would recommend contacting Prosoco (https://prosoco.com/). They are a great resource for this type of cleaner and would make a proper recommendation according to the specific needs of the material and contaminant.
Good Luck

------------------------------
Paul Levine AIA
Owner
Paul J. Levine, Architect
Pittsburgh PA
------------------------------

Original Message:
Sent: 12-18-2019 08:01
From: Grace Smith
Subject: cleaning masonry

I need to recommend a cleaning method to remove asphalt soot from masonry - brick, limestone, and terra cotta.  The building I'm working on is very near an industrial site where asphalt is made.  The masonry was gently cleaned about 20 years ago when an addition was added. It already needs to be cleaned again, including the addition.  Haven't found a good product that is gentle to the masonry, but will remove the oily asphalt soot.  Any recommendations?   thank you!

Grace A.M. Smith, RA, LEED AP
Designsmiths
616-866-4089

I concur with the other reply regarding Prosoco. They make a number of restoration cleaners for different substrates in different strengths. The question is what will work best without doing damage.
I believe Cathedral Stone has also come out with a variety of cleaning products.

------------------------------
Matthew Wolchko AIA
Project Architect
Parette Somjen Architects LLC
Garfield NJ
------------------------------

Original Message:
Sent: 12-18-2019 08:01
From: Grace Smith
Subject: cleaning masonry

I need to recommend a cleaning method to remove asphalt soot from masonry - brick, limestone, and terra cotta.  The building I'm working on is very near an industrial site where asphalt is made.  The masonry was gently cleaned about 20 years ago when an addition was added. It already needs to be cleaned again, including the addition.  Haven't found a good product that is gentle to the masonry, but will remove the oily asphalt soot.  Any recommendations?   thank you!

Grace A.M. Smith, RA, LEED AP
Designsmiths
616-866-4089