Brick veneer is a single layer of brick installed on the exterior of a house that serves as a decorative cladding, not a structural wall. Unlike solid masonry, where the brick holds the building up, brick veneer is attached to a wood or steel frame that carries all the structural load. If you removed the brick from a veneer wall, the house would remain standing. Remove the brick from a solid masonry wall, and the building would fail.
How Brick Veneer Differs From Solid Brick
The confusion between brick veneer and solid brick is understandable because from the street, they look identical. The difference is entirely behind the surface. A solid brick house (sometimes called double-brick or solid masonry) uses two layers of brick, or a layer of concrete block with an outer layer of brick, and the masonry itself is the structure. Brick veneer uses just one outer layer of brick, separated from the actual structural frame by an air gap.
You can sometimes spot the difference by looking closely at the brickwork. Solid brick walls contain “header bricks,” which appear shorter than the surrounding bricks because they’re turned sideways to bridge between the inner and outer layers. If every visible brick is the same size and orientation, it’s likely veneer. Around windows, solid brick walls have reinforced arches with blocks angled inward to support the opening, while veneer walls use a steel lintel above each window to carry the weight of the brick above it.
What’s Inside the Wall
A brick veneer wall is a layered system. Starting from the outside, you have the brick itself, then a narrow air gap (typically about one inch), then a moisture barrier or house wrap over the structural sheathing, then the wood or steel framing, and finally insulation and interior drywall. The brick is connected to the structural frame with corrugated metal ties, small strips fastened to the framing and embedded in the mortar joints as the brick is laid.
Building codes specify that each metal tie can support no more than 2.67 square feet of wall area, with ties spaced no more than 32 inches apart horizontally and 24 inches apart vertically. In high-wind or earthquake-prone areas, the requirements tighten: each tie covers no more than 2 square feet, and extra ties are required around windows and doors larger than 16 inches in either direction. These ties are critical because they’re the only physical connection between the brick layer and the house behind it.
How Moisture Drains Out
One of the smartest features of brick veneer is the air gap behind the brick. Brick is not waterproof. Water can penetrate mortar cracks as narrow as 1/100th of an inch, and some brick types are porous enough to absorb water like a sponge during a rainstorm. The system is designed with the assumption that water will get behind the brick.
When water penetrates the brick layer, it hits the air gap and runs down the back of the brick or the face of the moisture barrier. At the bottom of the wall, small openings called weep holes allow that water to drain out. These are typically gaps left in the mortar joints along the lowest row of brick, spaced every few feet. Weep holes also ventilate the air gap, which helps dry out the wall layers after rain and equalizes pressure to reduce wind-driven rain from being forced deeper into the cavity. Behind the air gap, flashing and building wrap direct any water that reaches them downward and out through the weep holes, keeping the structural frame and insulation dry.
If weep holes are clogged with mortar droppings or debris, water can pool at the base of the wall and seep into the foundation or interior framing. Keeping weep holes clear is one of the most important maintenance tasks for a brick veneer home.
Thermal Performance
Brick itself has a relatively low insulating value. In a standard brick veneer wall, the thermal performance comes almost entirely from the insulation between the studs, not from the brick. The brick does have thermal mass, meaning it absorbs and slowly releases heat, but in a conventional veneer wall, the brick sits outside the insulation. That means it absorbs heat from the sun and releases it back outdoors rather than into your living space. The mass of the exterior brick makes essentially no contribution to indoor thermal storage because it’s insulated from the interior.
Some builders use what’s called “reverse brick veneer,” placing the brick on the interior side of the insulation. This positions the thermal mass where it can absorb indoor heat during the day and release it at night, which is useful in climates with large temperature swings between day and night (roughly 10 to 18°F). Standard brick veneer, however, performs best in moderate climates with diurnal temperature swings in that same range, particularly when paired with a slab-on-ground foundation that provides some interior thermal mass.
Earthquake and Wind Resistance
Brick veneer’s performance in earthquakes and high winds depends heavily on how well the metal ties are installed. Research at the University of Illinois found that seismic performance is governed primarily by the strength and stiffness of the tie connections, their spacing (especially near wall edges and the tops of walls), and the overall wall geometry. Ties that are poorly fastened, spaced too far apart, or missing near the edges of walls create weak points where the brick can pull away from the frame.
Solid masonry is inherently more stable in seismic events and heavy winds because it’s a monolithic structure. Brick veneer, being a single non-structural layer hanging off the frame, is more vulnerable to cracking or separation if the anchoring isn’t right. That said, properly built veneer that meets current code requirements performs well in residential applications. The research concluded that non-compliant construction shortcuts commonly used in practice are generally not acceptable from a safety standpoint.
Cost Compared to Other Siding
Brick veneer costs more upfront than most other siding options. For a typical 2,100-square-foot single-story house, installed costs run about $7.74 per square foot of living area, compared to $5.71 for fiber cement siding, according to a 2023 cost study by RSMeans. For a 2,700-square-foot two-story house, the gap widens slightly: $9.53 for brick veneer versus $7.03 for fiber cement. That’s roughly 35% more for brick in both cases.
Where brick veneer starts to close that gap is over time. It requires very little maintenance compared to wood, vinyl, or fiber cement siding, which need periodic painting, caulking, or replacement. Mortar joints are the primary maintenance concern, and repointing (replacing deteriorated mortar) is typically needed every 25 to 30 years. The brick itself can last well over a century with minimal attention.
Advantages and Limitations
- Lighter foundation requirements: Because there’s only one layer of brick and the structural load sits on the frame, brick veneer needs a simpler footing than solid masonry, which is extremely heavy.
- Easier installation: Laying a single wythe of brick is faster and less labor-intensive than building a double-brick wall, which is a major reason solid masonry has largely disappeared from new residential construction.
- Moisture management: The air gap and drainage system give brick veneer a built-in way to handle water infiltration that solid brick walls lack.
- Vulnerability to poor installation: The system is only as good as its metal ties, flashing, and weep holes. Cutting corners on any of these can lead to moisture damage or structural separation.
- Wood framing risks: Unlike solid masonry, the structural frame behind brick veneer is susceptible to termites and wood decay if the moisture barrier fails.
Brick veneer accounts for the vast majority of brick-clad homes built in the last several decades. It offers the appearance and durability of brick at a lower cost and weight than solid masonry, with the trade-off that its long-term performance depends on the quality of the hidden components behind the brick face.