Drywall Cost Per Square Foot Calculator

Historical Background

Drywall, also known as plasterboard or gypsum board, emerged as a popular alternative to traditional plaster and lath systems in the early 20th century. Its relatively quick installation, lightweight material, and smooth finish made it the go-to choice for interior walls and ceilings. Today, drywall is one of the most commonly used construction materials in homes and commercial buildings.

Formula

The formula to calculate the drywall cost per square foot is:

\[ \text{DCSF} = \frac{\text{TCD}}{\text{TAD}} \]

where:

• DCSF: Drywall cost per square foot (\$/sq ft)
• TCD: Total cost of drywall (\$)
• TAD: Total area of drywall (sq ft)

Example Calculation

If the total cost of drywall is $600 and the total wall area is 400 sq ft, the drywall cost per square foot is:

\[ \text{DCSF} = \frac{600}{400} = 1.50000 \, \text{\$/sq ft} \]

Common FAQs

1. What is the average drywall cost per square foot?

   • If you buy your own drywall and install it yourself, the cost averages between $1.30 and $2.40 per square foot. Hiring a professional typically increases the cost to about $3.00 per square foot.

2. How does drywall thickness affect cost per square foot?

   • Thicker drywall is more expensive because it provides increased durability and better sound insulation. Depending on the thickness and quality, costs can vary significantly.

3. Does the drywall type influence cost?

   • Yes, different types of drywall, such as moisture-resistant (green board) or fire-resistant (Type X), tend to cost more due to their specialized properties.

4. Can I reuse old drywall to save costs?

   • Reusing old drywall is possible but not always practical. Drywall may lose structural integrity or contain mold, making it more cost-effective to replace it entirely.