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Brick has been a primary building material for over 5,000 years, and modern brick masonry remains one of the most durable and low-maintenance exterior cladding options available. According to the Brick Industry Association (BIA), a well-constructed brick wall can last 100 years or more with virtually no maintenance beyond occasional mortar repointing. Understanding the different brick types and their applications is essential for any masonry project.

Standard brick (also called modular brick) is the most commonly used size in residential construction. It measures approximately 7-5/8 inches long, 2-1/4 inches tall, and 3-5/8 inches deep, with a 3/8-inch mortar joint bringing the modular dimension to exactly 8 x 2-2/3 x 4 inches. This modular coordination means that three courses of brick plus mortar equal exactly 8 inches in height, simplifying layout calculations and ensuring compatibility with other building materials like concrete block and dimensional lumber.

King-size brick is larger at 9-5/8 x 2-3/4 x 3 inches and is popular in the southern and southwestern United States. Fewer king-size bricks are needed per square foot (approximately 4.5 vs. 6.75 for standard), which reduces labor costs. However, the thinner profile means it provides less thermal mass and wind resistance than standard brick.

Concrete masonry units (CMUs), commonly called cinder blocks or concrete blocks, are used for structural walls, foundations, and retaining walls. The standard 8x8x16-inch CMU (nominal dimensions, actual 7-5/8 x 7-5/8 x 15-5/8) requires only about 1.125 units per square foot, making installation much faster than brick. CMU walls are often filled with grout and rebar for structural applications and can be faced with thin brick veneer for an aesthetic finish. For calculating the concrete and grout fill needed for CMU walls, use our concrete calculator.

Brick pricing varies by type, color, texture, and regional availability. As of 2025, here are typical material costs for common brick products:

Mortar is the critical binding agent in masonry, and choosing the correct type is essential for structural integrity. ASTM C270 defines five mortar types, each designated by a letter from the word "MASON": M, S, N, O, and K (in decreasing order of compressive strength).

• Type N (General Purpose): 750 PSI compressive strength. The most common mortar for above-grade exterior walls and interior load-bearing walls. Good balance of strength and flexibility.
• Type S (Structural): 1,800 PSI. Required for below-grade foundations, retaining walls, and areas subject to lateral loads like wind or soil pressure. Use this for any wall in contact with earth.
• Type M (Maximum Strength): 2,500 PSI. Used for foundations, footings, and heavy load-bearing walls. Less common in residential work but specified for driveways and heavily loaded structures.
• Type O (Soft): 350 PSI. Low-strength mortar used for interior non-load-bearing walls and for repointing historic buildings where matching the original soft mortar is important.

A standard 70-pound bag of pre-mixed mortar covers approximately 35 standard bricks or 10-12 CMU blocks with a 3/8-inch joint. For larger projects, site-mixed mortar using separate portland cement, lime, and sand is more economical. The standard ratio for Type N mortar is 1 part portland cement, 1 part lime, and 6 parts sand. Sand alone represents the largest material volume in a brick project after the bricks themselves -- plan for approximately 18 cubic feet of sand per 1,000 bricks.

Masonry construction is governed by the International Building Code (IBC) Chapter 21 and the International Residential Code (IRC) Chapter 6, along with the referenced standard TMS 402/602 (Building Code Requirements and Specification for Masonry Structures). Key code requirements that affect your brick calculations include:

Veneer wall thickness: Brick veneer (non-structural brick facing over a framed wall) must be at least 2-5/8 inches thick per IRC R703.8.4. The veneer must be anchored to the structural wall with corrosion-resistant metal ties at a maximum spacing of 24 inches horizontally and 16 inches vertically (one tie per 2.67 square feet). A minimum 1-inch air space must be maintained between the veneer and the sheathing to allow moisture drainage, with weep holes at the bottom of the wall every 33 inches.

Structural masonry walls: Solid masonry walls used as the primary structural system must meet minimum thickness requirements based on wall height. For single-wythe unreinforced walls, the IRC requires a minimum of 8 inches thick for walls up to 12 feet high. Reinforced masonry allows thinner walls with steel rebar placed in grouted cells. A structural masonry wall supporting a roof or floor typically requires a concrete footing at least twice the wall width and extending below the frost line.

Seismic requirements: In Seismic Design Categories D, E, and F (high seismic risk areas including most of California, the Pacific Northwest, and parts of the central U.S.), unreinforced masonry is severely restricted or prohibited. Reinforced masonry with vertically grouted cells containing rebar at 48-inch maximum spacing is required. Bond beams (horizontally reinforced courses) must be placed at the top of the wall, at floor and roof lines, and at 48-inch maximum intervals. These additional reinforcement requirements increase material costs by 15-25%.

Foundation requirements: All masonry walls must bear on a continuous footing or foundation. The minimum footing width for a single-wythe brick veneer wall is 12 inches, and for a double-wythe structural wall, it is 16 inches (or twice the wall width, whichever is greater). The footing must extend at least 12 inches below undisturbed soil and below the local frost depth. Use our gravel calculator to estimate the drainage bed material under the footing.

While full structural brick homes are best left to professional masons, several brick projects are well within DIY capability. Here are practical tips from experienced masons for the most common homeowner projects:

Brick patios and walkways: These are the most beginner-friendly brick projects because they use dry-laid pavers on a compacted gravel and sand base rather than mortar. Excavate 7-8 inches deep, lay 4 inches of compacted gravel base, add 1 inch of leveling sand, set the pavers in your chosen pattern, and sweep polymeric sand into the joints. A 100-square-foot patio requires approximately 450 standard pavers and costs $200-$500 in materials. Edge restraints are critical to prevent spreading over time.

Brick mailbox columns: A common weekend project. A typical mailbox column is 16x16 inches square and 48 inches tall, requiring about 120-150 standard bricks. Build around a 4x4 or steel post set in concrete. Use Type S mortar for durability. The key to clean-looking brickwork is consistent mortar joints -- use a 3/8-inch joint tool and check level every 3-4 courses.

Brick garden walls and planters: Low decorative walls under 4 feet do not require engineering in most jurisdictions but still need a proper footing. Pour a concrete footing 12 inches wide and 6-8 inches deep. For any wall over 2 feet tall, add pilasters (thickened columns) every 12 feet and at corners. Weep holes in the first course allow drainage and prevent water from saturating the base, which causes frost damage and efflorescence (white mineral deposits).

Repointing (tuckpointing) existing brick: Repointing is the process of removing deteriorated mortar and replacing it with fresh mortar. It is the single most impactful maintenance task for extending the life of a brick structure. Use a grinder with a diamond blade or a cold chisel to remove old mortar to a depth of at least 3/4 inch. Clean the joints with water, then press new mortar into the joints in layers (two passes for deep joints). Match the original mortar type -- using too-hard mortar (like Type M) on old buildings with soft bricks can cause the bricks themselves to crack because the hard mortar does not flex with the building. Professional repointing costs $8-$25 per square foot, making it a worthwhile DIY project if you have patience.

When planning a new construction or re-cladding project, brick competes with several alternative exterior materials. Each has trade-offs in cost, durability, maintenance, and appearance:

Brick veneer vs. vinyl siding: Vinyl siding costs $3-$8 per square foot installed compared to brick veneer at $10-$25 per square foot installed. However, brick requires virtually no maintenance over a 50-100 year lifespan, while vinyl needs replacement every 20-30 years and is susceptible to impact damage, fading, and warping. Over 50 years, the total cost of ownership for brick is often lower than vinyl when factoring in replacements, repainting, and repairs. Brick also increases home resale value by an estimated 6% according to a study by the National Association of Home Builders.

Brick vs. stone veneer: Natural stone veneer costs $15-$40 per square foot installed, roughly 50-100% more than brick. Manufactured stone veneer (cultured stone) costs $10-$20 per square foot installed and offers the look of stone at a price competitive with brick. Stone is typically used as an accent material (on columns, water tables, or entryways) rather than full-wall coverage due to cost. Both materials offer excellent durability, but stone requires more skilled labor for installation.

Brick vs. fiber cement (Hardie board): Fiber cement siding costs $6-$13 per square foot installed and offers excellent durability (30-50 year warranty), fire resistance, and a painted finish that can mimic wood. It requires repainting every 10-15 years. Brick still wins on longevity and zero maintenance but at roughly double the upfront cost. Many builders use a combination: brick on the front facade and fiber cement on the remaining sides as a cost-effective compromise.

For any exterior cladding project, remember to factor in related work like insulation behind the cladding, window installation or replacement, and roofing to get a complete project estimate. For analyzing how exterior renovation costs affect your overall home value and mortgage, visit Amortio to run the numbers. And for understanding the thermal performance differences between cladding types, JouleIO offers energy calculation tools that can quantify heating and cooling savings.