Hardie Siding Cost Calculator

Last updated: 27 Aug 2025 | Author: Brij | Review By: Irshad

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Use our Hardie Siding Cost Calculator to estimate siding material and installation costs. Enter wall dimensions, cost per sq.ft, and labor rates to get accurate project costs.

Wall Height:

Wall Width:

Number of Walls:

Hardie Cost per sq ft:

Deduct Openings (Doors/Windows) - Optional

Number of Doors:

Door Width:

Door Height:

Door Area:

sq ft

Number of Windows:

Window Width:

Window Height:

Window Area:

sq ft

Installation Cost per sq ft (optional):

Waste Allowance (%):

Hardie Siding Cost Calculation Results

Total Siding Square Footage:

sq ft

Material Cost:

Installation Cost:

Total Project Cost:

Siding Squares (100 sq ft):

squares

When it comes to home exterior upgrades, James Hardie siding (fiber cement siding) is one of the most popular choices due to its durability, low maintenance, and long-lasting appeal. However, before starting your project, you need to know how much Hardie siding will cost.

Our Hardie Siding Cost Calculator helps you estimate the total cost of your siding project by considering wall dimensions, material cost, and installation charges.

Formula for Hardie Siding Cost

Step 1: Calculate Wall Area

$\text{Wall Area} = \text{Wall Height} \times \text{Wall Width}$

Step 2: Multiply by Number of Walls

$\text{Total Wall Area} = \text{Wall Area} \times \text{Number of Walls}$

Step 3: Deduct Openings (Doors/Windows)

$\text{Opening Area} = \text{Opening Height} \times \text{Opening Width}$

$\text{Total Openings} = \sum \text{(All Openings)}$

Step 4: Final Siding Square Footage

$\text{Siding Square Footage} = \text{Total Wall Area} - \text{Total Openings}$

Step 5: Material Cost

$\text{Material Cost} = \text{Siding Square Footage} \times \text{Cost per sq.ft}$

Step 6: Installation Cost (Optional)

$\text{Installation Cost} = \text{Siding Square Footage} \times \text{Labor Cost per sq.ft}$

Step 7: Total Project Cost

$\text{Total Project Cost} = \text{Material Cost} + \text{Installation Cost}$

Example Calculation

Suppose you have the following project details:

Wall Height = 10 ft
Wall Width = 20 ft
Number of Walls = 2
One Door = 7 ft × 3 ft
Cost per Square Foot (Hardie Siding) = $8
Labor Cost per Square Foot = $5

Step 1:

$\text{Wall Area} = 10 \times 20 = 200 \, \text{ft}^2$

Step 2:

$\text{Total Wall Area} = 200 \times 2 = 400 \, \text{ft}^2$

Step 3:

$\text{Opening Area (Door)} = 7 \times 3 = 21 \, \text{ft}^2$

Step 4:

$\text{Siding Square Footage} = 400 - 21 = 379 \, \text{ft}^2$

Step 5:

$\text{Material Cost} = 379 \times 8 = 3032 \, \text{USD}$

Step 6:

$\text{Installation Cost} = 379 \times 5 = 1895 \, \text{USD}$

Step 7:

$\text{Total Project Cost} = 3032 + 1895 = 4927 \, \text{USD}$

Applications of Hardie Siding Cost Calculator

Homeowners – Estimate Hardie siding budget before purchase.
Contractors – Provide quick cost estimates to clients.
DIY Projects – Plan material purchase and cost breakdown.
Real Estate – Assess renovation costs for resale value.

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