1. NEW YORK • ALABAMA •
WISCONSIN
Sandell Manufacturing holds more than 75 years experience
in Thru-Wall Flashing systems for masonry construction.
• Copper Thru Wall Flashing
• Preformed Metal Flashing
• Synthetic Flashing
• Mastics & Primers
• Anchors & Accessories
• Concrete Accessories
• Expansion & Control Joint Products
• Drainage

2. NEW YORK • ALABAMA •
WISCONSIN
Diedrich Technologies, a division of Sandell Construction Solutions,
is the nation’s leader in high-performance detergent products for
building restoration and maintenance.
Together, Sandell Construction Solutions and Diedrich Technologies,
Inc. fully encompass the needs of masonry construction.
• New Construction Masonry Cleaners
• Restoration Products for Masonry Cleaning
• Paint Removers
• Water Repellents
• Specialty Cleaners

3. CLEANING
CONCRETE
MASONRY

4. Good Masonry Practice
• Keep Masonry Faces as Clean as
Possible through the Construction Process
• Remove Stains and Mortar Tags before they set
• Remove grout spills immediately
• Minimize mortar rundown with wet masonry units
• Light brushing with a soft brush on mortar set

5. Good Cleaning Practice
• Test Panel, Test Panel, Test Panel
– Test all components of masonry face to ensure
uniform cleaning results
– Include all colors
• Clean Quickly
– Keep Wall Face clean
– Know the effectiveness of the acid in the cleaner
– Consider Mortar Types
– Don’t Clean too early!

6. Good Cleaning Practice
• Use the Right Cleaner at the Right Dilution
– Mildest Solution with Effective Results
• Avoid recommending a cleaner as “All
Purpose”
• Never Use Muriatic Acid

7. Improper Chemical Usage

8. Muriatic Acid
• Raw Acid – Inconsistent
in Strength
• No Wetting Agent
• No Detergent
• Yellowing of Mortar Joints
• Erosion of Mortar Joints
• Bleaching of Color
• Activation of Iron / Mineral Salts

9. Good Cleaning Practice
• Water, Water Everywhere!
– Pre-wet
– Rinse Thoroughly
• Clean from Bottom to Top
– Continue to Rinse Lower Areas

10. Cleaning New Masonry
• Pre-wet all surfaces to receive detergents
– Low Pressure!

11. Cleaning New Masonry
• Apply Appropriately Diluted Detergent to Face
Surface

12. Cleaning New Masonry
• Dwell Time, Clearing Mortar

13. Cleaning New Masonry
• Final Rinse

14. Cleaning Instructions
• Product Packaging
• Manufacturer’s Website
• Data Sheets
• Tags

15. BLOCK TAG PROGRAM
How it works -
• Send us samples of your architectural block.
• We will then test your block samples with
Diedrich Specialty Masonry Cleaner at
various ratios.
• This is then detailed in a comprehensive
report to be returned for your records.

16. We will then create a press ready graphic file with your
company name and cleaning instructions for Diedrich's
Specialty Masonry Cleaner, along with any other pertinent
information your needs determine.

17. Dilution Test Procedures
Concrete Masonry
• Block is placed in direct contact
with wet mixture of Type S Mortar
for 10 minutes
• Mortar deposits dry scraped after
24 hours
• Testing occurs at 3 days, 7 days,
and 14 days at different dilution
ratios