Calculating the Total Cost of Composite Decking Per Square Foot

Introduction

Composite decking has become increasingly popular due to its durability and low maintenance requirements compared to traditional wood decks. However, understanding how much composite decking costs per square foot can be challenging for homeowners embarking on a deck-building project. This article will guide you through the step-by-step process of calculating the total cost of composite decking, from initial estimates to final invoices. Additionally, we’ll provide a sample budget spreadsheet and offer advice on long-term maintenance costs.

Detailed Calculation Process

Step 1: Measure Your Deck Area

The first step in calculating the cost of composite decking is to measure the area of your deck accurately. Use a tape measure to determine the length and width of the deck, then multiply these dimensions to find the total square footage. For example, if your deck measures 20 feet by 15 feet, the total area would be 300 square feet.

Step 2: Determine Material Costs

Once you have the square footage, it’s time to consider the cost of composite decking materials. Prices vary based on brand, quality, and availability, but as of 2023, composite decking typically ranges from $3.50 to $8.00 per square foot. Visit local hardware stores or online retailers to gather accurate quotes. For our example, let’s assume an average cost of $5.00 per square foot.

Material cost = 300 square feet * $5.00/sq ft = $1,500

Step 3: Add Labor Costs

Labor costs depend on your location and the complexity of the installation. Typically, professional installers charge between $5.00 and $10.00 per square foot. If you choose to install the decking yourself, factor in the cost of tools and any potential mistakes that could lead to additional purchases. For our example, let’s use $7.00 per square foot for labor.

Labor cost = 300 square feet * $7.00/sq ft = $2,100

Step 4: Include Additional Expenses

Besides material and labor, other expenses include permits, railing systems, lighting, and sealants. These costs can add up quickly, so it’s essential to account for them. According to HomeAdvisor, permits can range from $100 to $500, while railings and lighting can cost around $1,000 to $3,000. Let’s estimate $2,000 for these additional items.

Total additional expenses = $2,000

Step 5: Calculate Final Cost

Add all these costs together to get the final estimated cost of your composite deck:

Total cost = Material cost + Labor cost + Additional expenses

Total cost = $1,500 + $2,100 + $2,000 = $5,600

Sample Budget Spreadsheet

To better manage your costs, consider using a budget spreadsheet. Here’s a simplified version:

Maintaining Long-Term Costs

Composite decking requires less maintenance than wooden decks, but it’s not entirely maintenance-free. Regular cleaning with mild soap and water can prevent staining and mold growth. Additionally, inspecting and repairing any loose fasteners or damaged sections every few years can extend the life of your deck. While the upfront cost might seem high, the long-term savings on maintenance can make composite decking a worthwhile investment.

Reference

Home Depot – How to Build a Deck

HomeAdvisor – Deck Cost Calculator