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Brick veneer walls manage water and movement through a coordinated system of cavity drainage, flashing, weeps, connections, and movement allowances—not through the brick face alone. Those details also affect the facade’s appearance: brick dimensions, mortar joints, coursing, openings, and corners need to be designed together.
This guide explains the practical basics of brick wall design and construction. One source note matters: the available Building Design + Construction AIA course article is titled “Preventing and treating distress in brick veneer cavity walls” and includes a section on basic brick wall design. The available information does not confirm that it is the exact course identified by the title “The basics of brick design and construction,” so the technical discussion below is not presented as a verified summary of that specific course.
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What makes a brick veneer wall a system?
A brick veneer wall is not simply a layer of brick placed against a building. The veneer, the space behind it, the backup wall, the connections between them, and the details that manage water and movement all work together. A weakness in one part can undermine the rest: for example, water that passes through the outer brick needs a route out, while the veneer needs secure connections that do not prevent the assembly from accommodating movement.
This distinction is especially important because modern brick veneer is thinner than traditional mass masonry. The BD+C material explains that it does not have the same capacity to absorb and release moisture without risk of water reaching the interior. The cavity behind the veneer therefore has a drainage role: water that gets through the outer wythe can move down and be directed back outside rather than being treated as if the brick face were an impermeable barrier.
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That system-level view helps organize early design decisions. Start by asking where water can enter, where it will travel, and how it will exit. Then coordinate the veneer’s support and movement with the backup wall. Finally, resolve the visible pattern—the unit, mortar, joints, and openings—so that the facade’s appearance fits the underlying construction rather than fighting it.
How does a brick veneer wall keep water out?
It manages water by allowing moisture that passes the brick to drain through a cavity and out at deliberate discharge points. A cavity is only useful when flashing, counter-flashing, drip edges, and weeps form a connected path that carries collected water to the exterior.
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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Brick can admit water; the design should not rely on the face alone to stop every drop. The cavity gives water a space to descend, but water must be collected where the path is interrupted or where the wall changes configuration. The BD+C discussion identifies transitions such as shelf angles, lintels, and the wall base as places where flashing gathers water and directs it outward.
Flashing is therefore not an isolated strip of material. Its location, continuity, and outward discharge matter. At a transition, the detail must lead water toward the exterior instead of allowing it to continue into the backup or become trapped. Counter-flashing and drip edges are part of the same logic: they help protect transitions and encourage water to leave the assembly rather than cling to an underside or return toward the wall.
Weeps provide the exit. Open head joints are one example described in the source. If water is collected but has no clear route out, the cavity’s drainage function is compromised. Conversely, a visible weep is not a substitute for continuous flashing that directs water to it. These elements need to be coordinated as one water-management detail.
There is no single flashing material that is right for every project. The source describes traditional metal options as well as flexible plastic, fabric, and composite alternatives. Selection depends on the design conditions and applicable requirements; an overview cannot determine which material or configuration will suit a particular wall. The important design question is whether the selected detail can collect, direct, and discharge water at the specific transition.
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For a project review, trace the water path at each change in the wall: the base, openings, shelf angles, lintels, and other interruptions. Ask where the flashing begins and ends, what it drains onto, and how water passes from the cavity to the exterior. A detail that answers only “what material is used?” is incomplete if it does not also answer “where does the water go?”
How are brick veneer walls connected to the building?
The veneer needs designed connections to its support, but different connection terms describe different jobs. The BD+C material distinguishes anchors, which secure wall assemblies to the structure, from ties, which join masonry wythes or connect veneer to a different backup, such as concrete masonry units or metal studs.
These connections are part of the wall’s structural coordination, not merely accessories. Their role is to connect the veneer and backup while the assembly performs as intended. Horizontal joint reinforcement is another element discussed in the source, serving as one means of connection and crack control. The exact connection approach depends on the wall assembly and project conditions; the source does not establish a universal tie type, layout, or spacing.
That is why a designer should identify the backup wall early. A veneer connected to a masonry backup and one connected to metal studs do not present identical coordination questions. The design must make clear how the veneer relates to that backup, how the support is provided, and how the connection strategy fits with flashing, cavity space, and the planned movement of the materials.
Connections also need to be considered alongside movement. An adjustable veneer anchor can accommodate differential movement, according to the BD+C material, while still providing support. That does not make every adjustable anchor suitable for every project; it illustrates that connection design must reconcile two needs: keep the veneer connected and allow the assembly to move where the design requires.
Why do brick walls need movement allowances?
Brick and the materials behind it do not necessarily move in the same way. The source describes brick as expanding with moisture and temperature changes, while concrete tends to shrink. If a wall assembly does not account for such differences, stress can contribute to cracking or other distress.
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Movement accommodation can involve horizontal or vertical expansion joints, shelf angles, and adjustable veneer anchors. Each responds to a different aspect of how the wall is supported or divided, so placement and design need to be worked out for the actual building. A general explainer cannot responsibly prescribe joint spacing without project dimensions, materials, support conditions, and applicable code guidance.
In practical terms, movement planning should not be postponed until after the facade pattern is settled. Joint locations influence the visible brickwork; shelf angles affect support and may create flashing transitions; anchors connect the veneer while accommodating movement where designed. These choices interact. Coordination should therefore happen among the wall design, structural support, drainage details, and facade layout rather than as a series of independent decisions.
Mortar is also part of the movement picture. The BD+C material warns that mortar that is overly hard can limit movement and contribute to cracking or spalling. This is not a basis for choosing mortar by a generic rule of thumb: mortar must suit the job and the project specifications. It is a reminder that a stronger-sounding material choice is not automatically better if it conflicts with the movement needs of the masonry.
How do brick size, mortar, and coursing shape the facade?
The visible character of a brick wall comes from several coordinated choices: unit dimensions, mortar type and tooling profile, and the coursing pattern. These decisions affect not only color and texture but also how well the wall fits around openings, corners, and its overall height.
Brick dimensions are commonly discussed as nominal dimensions that include mortar joints. That means the design module is not just the brick unit by itself. When openings and wall lengths are coordinated with the brick-and-joint module, the layout can be planned more deliberately; when they are not, the facade may require awkward cuts or inconsistent-looking adjustments. The source emphasizes planning openings, corners, and wall heights in relation to that module.
Coursing is the arrangement of units across the wall. A chosen pattern should be considered alongside the dimensions of the wall and the location of openings, not treated as decoration selected after the construction details are complete. Even where the pattern is visually straightforward, its relationship to corners, heights, and transitions affects how the facade reads.
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Mortar has two visible roles: its color changes the perceived contrast with the brick, and its tooling profile changes the shadow and texture of each joint. The source discusses concave, rodded, and V-shaped joints as more weather resistant than some other profiles. That guidance should be read as the source’s comparative design advice, not as a universal specification for every exposure or project. A project’s specifications and professional design guidance should govern the final selection.
Appearance decisions can reveal coordination problems early. If a window head, corner, or parapet does not align with the intended module, the team can review the layout before the detail is locked in. Resolving that fit at design time helps avoid treating every mismatch as a field adjustment. At the same time, appearance should not override the water path, required support, or movement allowances: the facade pattern has to work within the wall system.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which codes and technical references should guide a project?
Use the building code adopted for the project’s jurisdiction and the current standards it references; do not assume an older course page identifies the edition that applies today. The BD+C material says masonry design is governed by applicable building codes, which often reference ACI 530, and identifies ASCE 7 as a typical basis for wind and seismic requirements.
Those references are starting points, not confirmation that a particular design complies. The adopted code, its referenced editions, local amendments, building conditions, and project-specific loads all matter. The responsible design professionals must establish the applicable requirements rather than relying on a general online overview or an older educational article.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11The source also points to Brick Industry Association (BIA) Technical Notes as resources commonly used in masonry design and detailing. A related PDH Online course listing describes BIA Technical Note 28B as covering veneer behavior, differential movement, ties and anchors, air space, detailing, materials selection, and construction techniques. That is a useful indication of the subjects a technical reference can address, not a substitute for checking the current publication and project requirements.
A practical sequence is to establish the governing code and structural requirements first, then consult current masonry guidance for the relevant wall type and details. Use those sources to develop the project-specific design for drainage, connections, movement, and materials. The details should be reviewed together: meeting a structural requirement does not by itself settle how water drains, and a visually coordinated layout does not by itself demonstrate code compliance.
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What should be coordinated before construction?
Before construction documents are finalized, the team should be able to explain the wall’s water route, support strategy, movement plan, and facade module. Those are related checks, not a substitute for project-specific drawings, specifications, or review by qualified design professionals.
- Water: Identify the cavity and trace how water at the base, lintels, shelf angles, and other transitions reaches flashing and exits through weeps.
- Connections: Clarify what the anchors secure, what the ties connect, what the backup is, and how reinforcement fits the design.
- Movement: Account for differing material movement and coordinate expansion joints, shelf angles, and adjustable anchors without relying on generic spacing.
- Appearance: Coordinate nominal unit dimensions, mortar joints, coursing, openings, corners, and wall heights as one facade layout.
- Requirements: Confirm the jurisdiction’s adopted code, the applicable current standards, and project-specific structural requirements.
These questions are especially useful at transitions because that is where separate design intentions meet. A shelf angle, for example, is a support element and also a point where flashing and drainage need attention. A corner is a visual and dimensional condition as well as part of the wall layout. Coordinating the whole detail makes it less likely that one decision solves its local problem by creating another elsewhere.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteDoes the named AIA course offer credit now?
The available evidence does not verify that the exact course named in the assignment is currently available or establish its current AIA credit amount. The retrieved BD+C page is an older course article with a different title; it says readers can study the article and take an exam for AIA CES learning units, but that does not confirm the status or credit for the title at issue.
If continuing-education credit is the reason for seeking the course, confirm the exact title, provider, exam availability, and credit directly with the course provider before relying on it. Other providers list masonry-related continuing-education topics, but those offerings are separate resources and do not establish that this BD+C course is open or equivalent. For example, General Shale’s continuing-education page describes masonry-related offerings and advises readers to check course-specific availability and credit.
Frequently Asked Questions
What does BIA Technical Note 28B cover?
The related PDH Online course description identifies veneer behavior, differential movement, ties and anchors, air space, detailing, materials selection, and construction techniques as subjects. Check the current technical note itself for its full scope and applicability to a particular project.
Can I earn AIA credit just by reading a brick design article?
Not necessarily. The BD+C page describes an article-and-exam format, but reading alone does not establish that a course is currently open or that credit will be awarded; confirm the exact course and requirements with its provider.
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Where can architects find other brick-related continuing-education courses?
Masonry-related course catalogs are available from providers including General Shale and Ernest Maier. Their listings are separate from the BD+C article, and availability or credit can vary by course, so check with the provider directly.
