Patching Cracks In Brick Masonry
- Procedure code:
- National Capitol Region Specifications
- Brick Unit Masonry
- Last Modified:
PATCHING CRACKS IN BRICK MASONRY
A. This procedure includes guidance on repairing cracks or
infilling small holes in brick masonry using a
cementitious patching material.
B. See 01100-07-S for general project guidelines to be
reviewed along with this procedure. These guidelines
cover the following sections:
1. Safety Precautions
2. Historic Structures Precautions
4. Quality Assurance
5. Delivery, Storage and Handling
6. Project/Site Conditions
7. Sequencing and Scheduling
8. General Protection (Surface and Surrounding)
These guidelines should be reviewed prior to performing
this procedure and should be followed, when applicable,
along with recommendations from the Regional Historic
Preservation Officer (RHPO).
A. Jahn Restoration Techniques and Research (Cathedral Stone Company)
B. Edison Chemical Systems, Inc.
A. Cementitious patching material such as "M70 Stone
Restoration Mortar" (Jahn Restoration), "Custom System
45" Edison Chemical Systems), or approved equal.
B. Clean, soft cloths
C. Clean, potable water
A. Stiff natural bristle brushes
E. Putty knife
3.01 ERECTION, INSTALLATION, APPLICATION
A. Remove all loose materials from cracked brickwork.
B. Widen crack to 1/8" wide and grout crack and any voids
with a cementitious grout that is color matched to clean
brick. The grout should be compatible in texture and
porosity to the adjacent masonry. Tape joint to provide
a clean neat finished appearance.
C. Severely cracked brick associated with displaced masonry
should be dismantled. Probe interior conditions and
repair following an engineer's evaluation. Rebuild
brickwork to match existing bonding patterns and use
salvaged brick where possible and new brick to match
existing color, texture and porosity.
END OF SECTION