Deck Building Material Calculator
Below is an estimated table for deck building materials based on a standard deck size:
| Material | Quantity Needed |
|---|---|
| Decking Boards | Approximately 1 board per square foot of deck area |
| Joists (2×6 or 2×8) | Depends on deck size and spacing (estimation based on joist span and spacing) |
| Deck Screws | Approximately 5 screws per decking board |
| Concrete Footings | 1 footing per corner and additional footings as needed for support (depending on local building codes and soil conditions) |
| Post Anchors | 1 anchor per post (if using) |
| Ledger Board | 1 board for attaching deck to house (if applicable) |
| Nails or Lag Bolts | For securing ledger board to house (if applicable) |
| Post Caps | 1 cap per post (if using) |
| Railings | Estimate based on linear feet of deck perimeter |
| Stair Stringers | 2 stringers per staircase |
| Stair Treads | 1 tread per step |
| Balusters | Estimate based on linear feet of railing |
| Post Sleeves | 1 sleeve per post (if using) |
| Post Lights | Estimate based on number of posts (if using) |
| Deck Stain or Sealer | Estimate based on deck size and desired coverage |
| Concrete Mix | Estimate based on number of footings and size |
FAQs
How do I calculate material for a deck? To calculate material for a deck, you’ll need to determine the dimensions of the deck (length and width), calculate the total area, and then estimate the quantity of decking boards, joists, screws, and other materials needed based on your design and construction plans.
How do I work out how much timber I need for decking? To work out how much timber you need for decking, calculate the total area of the deck and then determine the quantity of timber required based on the size and spacing of the decking boards and joists.
What is the formula for building a deck? There isn’t a single formula for building a deck, as it depends on factors such as the size, design, materials, and local building codes. However, a basic formula involves planning the layout, constructing the frame (joists and beams), installing the decking boards, and adding finishing touches.
What material do you use to build a deck? Common materials used to build a deck include pressure-treated lumber, cedar, composite decking, and tropical hardwoods. Each material has its advantages and disadvantages in terms of cost, durability, and maintenance requirements.
What is the average cost of materials to build a deck? The average cost of materials to build a deck varies depending on factors such as size, materials used, and location. On average, it could range from £15 to £35 per square foot for materials only.
How much does it cost to build a 12×12 deck? The cost to build a 12×12 deck can vary depending on factors such as materials used, labor costs, and location. On average, it might cost anywhere from £2,000 to £5,000 or more for materials and labor.
Is 4×2 timber strong enough for decking? 4×2 timber can be strong enough for decking, depending on factors such as the species of wood, spacing of joists, and intended use of the deck. However, it’s generally recommended to use larger dimensions or composite materials for better durability and longevity.
What is the 30cm rule for decking? The 30cm rule for decking refers to the recommended maximum spacing between decking joists. To ensure structural integrity and prevent sagging or warping, joists should be spaced no more than 30cm apart.
How thick should decking joists be? Decking joists are typically 2×6 or larger, with a thickness of at least 1.5 inches. The actual thickness depends on factors such as the span between supports, load requirements, and local building codes.
How to build a deck on a budget? To build a deck on a budget, consider using cost-effective materials such as pressure-treated lumber, minimizing the size and complexity of the design, and DIY installation to save on labor costs.
What do you put under decking? Under decking, you can install a variety of materials to create a dry, usable space, including landscape fabric, gravel, crushed stone, or specialized under-deck drainage systems.
How do you prepare ground for decking? To prepare the ground for decking, remove vegetation and debris, level the area, compact the soil, and install a weed barrier or landscape fabric to prevent weed growth.
What is the cheapest material to build a deck with? Pressure-treated lumber is often the cheapest material to build a deck with, offering a balance of affordability, durability, and availability.
Is it cheaper to build your own deck? Building your own deck can be cheaper than hiring a professional, as it eliminates labor costs. However, DIY deck building requires time, effort, and skill, and mistakes can end up costing more in the long run.
How many footings do I need for a deck? The number of footings needed for a deck depends on factors such as size, shape, and load requirements. Typically, footings are spaced 6 to 8 feet apart along beams and joists.
Why is it so expensive to build a deck? Deck construction costs can be expensive due to factors such as material costs, labor costs, site preparation, permits, and specialized tools or equipment required for installation.
How much should I budget for a deck? It’s recommended to budget at least £20 to £50 per square foot for a deck, including materials and labor. Additional costs for permits, site preparation, and finishing touches should also be considered.
What is the best deck material? The best deck material depends on factors such as durability, maintenance requirements, and aesthetics. Common options include composite decking, tropical hardwoods, cedar, and pressure-treated lumber.
Is it cheaper to lay a patio or decking? The cost of laying a patio versus building a deck depends on factors such as materials used, labor costs, and site conditions. In general, decking tends to be more expensive upfront but may have lower maintenance costs over time compared to a patio.
How much should a 20×20 deck cost? The cost of a 20×20 deck can vary widely depending on factors such as materials used, labor costs, and location. On average, it could range from £8,000 to £20,000 or more for materials and labor.
Can I build my own deck? Yes, you can build your own deck if you have the necessary tools, materials, and skills. However, it’s essential to follow proper construction techniques and safety precautions to ensure a sturdy and safe deck.