Brick Calculator
A 20×8 ft wall needs about 1,120 standard bricks (with running bond and 3/8" mortar joints). Materials: $560-1,120. With labor: $2,400-4,800.
Brick Calculator
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How to Calculate Bricks
For walls (standard modular brick with 3/8" mortar):
bricks = wall_sqft × 7 × (1 + waste_pct / 100)
For patios (brick pavers, no mortar):
bricks = patio_sqft × 4.5 × (1 + waste_pct / 100)
| Bond Pattern | Bricks/sqft (wall) | Waste Factor |
|---|---|---|
| Running bond (stretcher) | 6.75 | 5% |
| Common bond | 7.0 | 5% |
| Flemish bond | 7.5 | 7% |
| English bond | 10.1 | 7% |
| Stack bond | 6.75 | 3% |
| Herringbone (patio) | 4.5 | 10% |
| Basket weave (patio) | 4.5 | 5% |
| Type | Dimensions (W×H×L) | Weight |
|---|---|---|
| Modular | 3-5/8″ × 2-1/4″ × 7-5/8″ | 4.2 lbs |
| Queen | 3-1/8″ × 2-3/4″ × 9-5/8″ | 5.6 lbs |
| King | 3″ × 2-5/8″ × 9-5/8″ | 5.2 lbs |
| Engineer | 3-5/8″ × 2-13/16″ × 7-5/8″ | 4.8 lbs |
| Utility | 3-5/8″ × 3-5/8″ × 11-5/8″ | 9.0 lbs |
Mortar Requirements (per 1,000 bricks):
- 3/8" joints: ~7.5 bags (70-lb) Type S/N mortar
- 1/2" joints: ~10 bags
- Sand: 1 ton per 1,000 bricks (if mixing from scratch)
Common Mistakes:
- Counting bricks without mortar joint deduction — mortar takes up 10-15% of the wall face
- Using interior mortar (Type N) for exterior below-grade applications — use Type S for retaining walls
- Not ordering all bricks from one kiln run — color variation between runs is significant
- Forgetting about lintels above windows and doors — steel angles or precast lintels are needed, not just bricks
Frequently Asked Questions
How many bricks do I need per square foot?
About 7 standard modular bricks per square foot for a single-wythe wall with 3/8" mortar joints in running bond. For patio/walkway applications with brick pavers laid flat, about 4.5 pavers per square foot. Always add 5-10% for waste.
How much do bricks cost?
Standard red clay bricks cost $0.50-1.00 each ($350-700 per 1,000). Premium or specialty bricks: $1.00-3.00 each. Professional bricklaying labor costs $8-18 per square foot installed. A 200 sq ft brick wall: $1,400-4,800 total installed.
How much mortar do I need?
About 7.5 bags of 70-lb pre-mixed mortar per 1,000 bricks with standard 3/8" joints. For a 160 sq ft wall (about 1,120 bricks), you'll need approximately 8-9 bags. One bag covers roughly 120-140 bricks depending on joint size and technique.
What type of mortar should I use?
Type N for most above-grade walls (moderate strength, good workability). Type S for below-grade, retaining walls, and high-wind areas (higher strength). Type M for foundations and load-bearing walls below grade. Never use Type O (interior only, low strength) for structural or exterior work.
How many bricks are on a pallet?
A standard pallet holds 500-510 modular bricks, weighing approximately 2,100-2,200 lbs. Some suppliers sell cubes of 500 or 525. Always buy whole pallets — loose bricks cost significantly more per unit and are more likely to arrive damaged.
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