The most common brick pattern where each course is offset by half a brick, creating a staggered appearance and maximum structural strength.
Mortar Joint
The gap between bricks filled with mortar, typically 3/8 inch thick. Joint style (concave, V-joint, flush) affects weather resistance and appearance.
Course
A single horizontal row of bricks. Standard modular bricks produce 3 courses per 8 inches of wall height, including mortar joints.
Wythe
A single vertical thickness of bricks. A single-wythe wall is one brick thick (4 inches); a double-wythe wall is two bricks thick.
Waste Factor
The extra bricks ordered to account for cutting, breakage, and defects. A 5-10% waste factor is standard for most projects.
Real-World Examples
Example 1
Garden Wall
Wall: 20ft long × 4ft high = 80 sq ft, Standard modular bricks, Running bond, Waste: 10%
Result: 80 × 7 = 560 bricks × 1.10 = 616 bricks. Need 2 bags of mortar. At $0.75 per brick, material cost is approximately $462.
Example 2
House Facade Veneer
Wall: 40ft × 10ft = 400 sq ft, minus windows/doors 60 sq ft = 340 sq ft, Waste: 7%
Result: 340 × 7 = 2,380 bricks × 1.07 = 2,547 bricks. Need approximately 9 bags of mortar and 340 wall ties.
Brick Sizes and Coverage
Brick Type
Dimensions (in)
Bricks per Sq Ft
Weight Each
Modular
3-5/8 × 2-1/4 × 7-5/8
6.86
4.2 lbs
Standard
3-5/8 × 2-1/4 × 8
6.55
4.5 lbs
Queen
3-1/8 × 2-3/4 × 9-5/8
5.76
5.6 lbs
King
3 × 2-3/4 × 9-5/8
5.76
5.2 lbs
Planning a Brick Construction Project
Choosing the Right Bond Pattern
Running bond is the default for structural walls because the staggered joints distribute loads evenly. Stack bond (aligned joints) has a modern look but is structurally weaker and typically used only as a veneer over a structural backup. Flemish bond alternates headers and stretchers for a decorative, traditional appearance.
Estimating Mortar Accurately
Mortar usage depends on joint width, brick size, and mason technique. For standard 3/8-inch joints with modular bricks, plan on one 80-lb bag per 35-40 sq ft of wall. Over-ordering mortar by 10-15% is wise because running short mid-project means stopping work while the first batch begins to set.
Related Calculators
How to Use This Calculator
1
Measure Wall Area
Enter wall dimensions (length x height) in feet. Subtract openings such as doors and windows to get net brick area.
2
Choose Brick Size
Select standard modular (3-5/8 x 2-1/4 x 7-5/8 in), queen, king, or custom brick dimensions to match your project spec.
3
Set Mortar Joint Width
Enter the joint thickness -- standard is 3/8 inch. Thicker joints (1/2 inch) create a more rustic look; thinner requires precision.
4
Add Waste Percentage
Use 5% for simple walls, 10% for walls with cuts around corners or openings, 15% for complex patterns like herringbone or stacked bond.
5
Get Brick Count and Mortar
Review total bricks needed, bags of mortar mix, and the number of courses from base to top of wall.
Key Formulas
Bricks per Sq FtB/sf = 1 / ((L + Joint) x (H + Joint))
Total BricksTotal = Area x B/sf x (1 + Waste%)
Mortar VolumeMortar = Total Bricks x 0.25 cu ft
CoursesCourses = Height / (Brick H + Joint)
Key Terms
Course — A single horizontal row of bricks. Standard coursing is 3 courses per 8 inches (including mortar joints).
Mortar Joint — The mortar-filled gap between bricks, typically 3/8 inch. Joint width affects brick count per square foot and the wall's appearance.
Running Bond — The most common brick pattern with each course offset by half a brick length, creating a staggered, interlocking pattern for structural strength.
Header — A brick laid perpendicular to the wall face, tying the outer wythe to the structural backup. Common in double-wythe masonry walls.
Wythe — A single vertical thickness of brickwork. A standard 4-inch exterior veneer is one wythe; structural brick walls are typically two or more wythes.
Efflorescence — White crystalline deposits left on brick surfaces when water migrates through the wall and carries soluble salts to the surface as it evaporates.
Frequently Asked Questions
What mortar joint size should I use?
Standard residential brickwork uses a 3/8-inch mortar joint, which provides a good balance of structural performance and visual proportion. Thinner joints (1/4 inch) create a tighter, more refined look but require consistent brick sizing. Thicker joints (1/2 inch) are more forgiving of dimensional variation and create a rustic aesthetic.
What are the standard brick sizes?
Standard modular brick is 3-5/8 x 2-1/4 x 7-5/8 inches (face dimensions) and yields 6.75 bricks per square foot with a 3/8-inch joint. Queen size (2-3/4 x 2-3/4 x 8 in) and king size provide slightly different coursing. Always calculate with the actual brick dimensions and joint size for your project.
How much waste should I add for brick cutting?
Add 5% waste for straight walls with no cuts, 8-10% for projects with corners and window/door openings, and 15% for patterns like herringbone or soldier courses requiring many angled cuts. For restoration work matching existing brick, buy 15-20% extra since dye lots vary and future replacements may not match.
What is the difference between tuckpointing and repointing?
Repointing removes deteriorated mortar and fills the joints with new mortar to match the existing color and profile. Tuckpointing is a decorative technique where two colors of mortar are used to create the appearance of very fine joints -- common in historic restoration. Both improve weather resistance and structural integrity of aging masonry.