In commercial construction, the strength and reliability of every connection matter. Masonry anchors may seem like small components, but they play a critical role in ensuring that brick walls and structural attachments stay secure under various loads and environmental conditions. From installing façade systems to securing equipment or signage, using the right anchor is vital to a building’s integrity.
This guide explains everything you need to know about masonry anchors for brick in commercial settings—what they are, their types, how to choose the right one, and best practices for installation.
What Are Masonry Anchors?
Definition and Function
Masonry anchors are fasteners used to attach various materials—such as steel, wood, or other structural components—to brick or masonry walls. They ensure that these attachments stay fixed and perform well over time, even under stress, vibration, or shifting conditions.
Key Components
Most masonry anchors consist of:
- An anchor body that goes into a pre-drilled hole in the brick
- An expansion or bonding mechanism to grip the inside of the masonry
- Coating materials (like zinc or stainless steel) to protect against rust and corrosion
These components work together to create a safe, load-bearing connection between the brick and the attached object.
Types of Masonry Anchors for Brick
Different types of anchors suit different applications. In commercial construction, the choice often depends on the load requirements and the condition of the brick.
Mechanical Anchors
Sleeve Anchors
These are versatile anchors used in solid brick and concrete. As the bolt is tightened, a sleeve expands to grip the wall.
Wedge Anchors
Ideal for heavy-duty applications. These provide strong tension and shear resistance and are often used in solid brick walls.
Drop-In Anchors
Installed flush with the surface, drop-in anchors are good for overhead applications where a clean finish is important.
Lag Shields
Used with lag bolts in softer or hollow masonry. These expand when the bolt is inserted, securing the anchor in place.
Chemical Anchors
Epoxy-Based Anchors
These involve injecting resin into a hole and inserting a threaded rod. Once cured, they provide extremely strong bonding, ideal for heavy structural loads.
Resin Capsule Systems
Similar to epoxy anchors but pre-packaged for quicker installation. They’re especially useful in retrofitting projects.
Chemical anchors are often preferred for older brick or in seismic zones because they distribute stress more evenly and avoid expansion pressures that could damage brittle brick.
Veneer Anchors and Ties
Corrugated Ties
Typically used in low-rise commercial buildings, these are embedded into the mortar joint and tied to the frame behind.
Wire Ties
Allow for slight movement between the structure and the brick veneer—helpful in preventing cracks.
Adjustable Anchors
Offer flexibility in aligning brickwork with backup walls. Great for large commercial façades where uniform appearance is essential.
Choosing the Right Anchor for Commercial Applications
Selecting the correct anchor depends on multiple factors.
Load Requirements
Commercial buildings often require anchors that can support heavy weights or resist wind loads and vibration. Engineers must calculate shear and tensile forces to choose a product that meets these demands safely.
Environmental Factors
Corrosion is a real threat in exposed locations or buildings near the coast. In such environments, stainless steel or coated anchors are preferred. In seismic zones, anchors must also allow for movement and absorb shock without failing.
Brick Type and Condition
- Solid Brick: Best for mechanical anchors due to dense structure
- Hollow Brick: Requires specialty anchors like toggle bolts or chemical anchors
- Old/Damaged Brick: Avoid mechanical expansion anchors; chemical anchors are safer
Installation Guidelines
Pre-Installation Considerations
- Confirm brick type and condition
- Drill the correct size and depth of hole
- Maintain appropriate spacing and edge distances to prevent cracking
Installation Methods
- Drill a pilot hole using the recommended diameter for the chosen anchor.
- Clean the hole thoroughly with a brush and compressed air—this is especially critical for chemical anchors.
- Insert the anchor or inject the adhesive for chemical systems.
- Tighten the fastener or allow adhesive to cure fully before loading.
Common Mistakes to Avoid
- Over-tightening expansion anchors (can crack the brick)
- Using the wrong anchor for the brick type
- Skipping the cleaning step for chemical anchors
- Misaligning the anchor before curing or setting
Testing and Code Compliance
ASTM Standards and Building Codes
ASTM C1354 is the standard method for testing masonry anchor strength. Most commercial projects must meet local and national building codes, which often specify anchor types, load ratings, and installation methods.
Load Testing on Site
Especially in critical structural applications, field pull tests may be required to confirm anchor strength. Engineers must document these results for compliance and safety assurance.
Real-World Applications in Commercial Buildings
Masonry anchors are used in a wide range of commercial construction scenarios, such as:
- Attaching curtain walls to the brick façade
- Securing signage and HVAC equipment
- Supporting handrails and guardrails
- Installing brick veneer for aesthetics and insulation
Each application comes with its own engineering requirements and installation guidelines, highlighting the importance of careful planning and execution.
FAQs About Masonry Anchors for Brick in Commercial Settings
What is the best anchor for brick walls in commercial construction?
For heavy-duty loads, wedge anchors or chemical anchors are often best. For brick veneer, adjustable ties or corrugated anchors work well.
Can I use expansion anchors in old or damaged brick?
It’s not recommended. Expansion anchors can crack weakened brick. Chemical anchors are safer in such cases.
How do chemical anchors perform compared to mechanical anchors?
Chemical anchors provide higher bond strength and reduce stress on the brick. They’re ideal for structural or seismic applications.
Are masonry anchors reusable?
No. Most masonry anchors—especially expansion and chemical types—are designed for one-time use.
What anchor type should I use for seismic zones?
In seismic areas, flexible and high-strength chemical anchors are preferred. Make sure the product meets seismic code requirements.
Conclusion
Masonry anchors may be hidden from sight, but they are essential for the safety, durability, and performance of any commercial brick structure. Whether you’re working on a high-rise office, a distribution center, or a retail façade, the right anchoring system makes all the difference.
At Leidal & Hart, we understand how the smallest details can impact the success of a large-scale project. With decades of expertise in commercial masonry, our team ensures every component—from structural systems to anchors—is carefully selected and expertly installed.
If you’re planning a commercial construction project and want precision, durability, and experience on your side, contact Leidal & Hart to learn how we can help.
