14x20 Shed Material List
Quick Answer
A 14x20 gable shed with 8 ft walls, 16 inch on center framing, 4/12 roof pitch, pressure treated floor framing, OSB or plywood sheathing, a basic double door, and gravel foundation is a large structure often used as a workshop, garage overflow, or small hobby building. The wider 14 ft span increases structural requirements compared to smaller sheds.
See all shed material lists by size
You will need:
- Heavy pressure treated lumber for the floor system
- 2x4 wall framing
- 2x6 or 2x8 roof framing for the wider span
- Extensive floor, wall, and roof sheathing
- Panel or lap siding
- Asphalt shingles and underlayment
- Reinforced double door framing
- Large quantities of fasteners and hardware
In 2026 pricing, expect a realistic total material cost of: $6,000 to $9,500
This assumes a gravel base and basic exterior finishes only.
Need a smaller option? See our 16x16 shed material list. Want a larger build? See our 10x28 shed material list.
Full Material List
Quantities assume 8 ft wall height, 16 inch on center spacing, and a standard double door on one gable end.
Floor Framing
A 14 ft width pushes floor spans beyond what light framing can comfortably handle.
Gravel Base
- 6 to 8 cubic yards of compacted 3/4 inch crushed gravel
Floor Frame (Pressure Treated)
Perimeter
- 2x8x20 PT – 2 (long rim joists)
- 2x8x14 PT – 2 (end band joists)
If long boards are unavailable, splice sections over blocking.
Floor Joists (16 inch OC across 14 ft span)
Many builders upgrade to 2x10 joists for stiffness.
- 2x10x14 PT – 14 to 16
Floor Sheathing
- 3/4 inch tongue and groove plywood or OSB – 9 sheets
Fasteners
- Exterior-rated screws or galvanized nails
- Joist hangers recommended
Wall Framing
Framed 16 inch on center.
- 2x4x8 studs
- 120 to 135 total
- Includes perimeter walls
- Additional studs for corners and door framing
- Waste allowance
Plates
- 2x4x20 – 6 (long walls, double top plates + bottom plates)
- 2x4x14 – 6 (end walls)
Splicing shorter boards over studs is acceptable when long lumber is unavailable.
Double Door Framing
Typical opening: 60 to 72 inches wide.
- 2x8x8 – 2 (header material)
- 1/2 inch plywood spacer
- Jack and king studs included in stud count
Roof Framing
A 14 ft span requires stronger rafters than smaller sheds.
Rafters (4/12 pitch, 16 inch OC)
- 2x8x16 – 32 to 36
Approximately 16 to 18 rafter pairs.
Ridge Board
- 2x10x20 – 1
Collar Ties or Ceiling Joists
- 2x4x14 – 16 to 18
Sheathing
Wall Sheathing
- 7/16 inch OSB or plywood – 22 to 26 sheets
Panel siding may replace separate sheathing.
Roof Sheathing
- 7/16 inch OSB or plywood – 14 to 16 sheets
Siding
Panel siding is most common for large sheds.
T1-11 or LP SmartSide Panels
- 22 to 26 sheets
Vinyl or lap siding systems require additional trim and backing materials.
Roofing
Underlayment
- 2 rolls synthetic underlayment
Drip Edge
- 10 to 12 pieces (10 ft lengths)
Shingles
- Approximately 3 squares
- 9 to 12 bundles depending on waste
Roofing Nails
- 10 lb box
Hardware and Fasteners
- 16d framing nails or structural screws
- 8d nails for sheathing
- Exterior construction screws
- Construction adhesive (5 to 6 tubes)
- Hurricane ties recommended
- Heavy-duty hinges (3 per door)
- Exterior double-door latch or lockset
- Padlock hardware
- Flashing for door header
Estimated Cost Breakdown
Typical 2026 pricing ranges.
- Gravel Base: $350 to $700
- Pressure Treated Floor Framing: $1,000 to $1,700
- Wall Framing Lumber: $900 to $1,500
- Roof Framing Lumber: $900 to $1,600
- Sheathing (walls and roof): $1,300 to $2,100
- Siding: T1-11: $950 to $1,500; LP SmartSide: $1,800 to $2,900; Vinyl system: $2,500 to $4,000
- Roofing: $600 to $1,100
- Hardware and Fasteners: $300 to $550
Total Estimated Range
With basic panel siding: $6,000 to $7,800
With upgraded siding: $7,800 to $9,500
Costs increase due to:
- Wide 14 ft span requiring stronger framing
- Large floor area (280 sq ft)
- Increased wall length and stud count
- Substantial roof coverage
- Reinforced door framing
- High fastener consumption
- Material delivery costs may also increase due to weight
If you want exact cut diagrams, printable framing layouts, and step-by-step blueprints for this 14x20 shed, detailed plans eliminate guesswork and reduce lumber waste.
Get the Complete 14x20 Shed Plans Here
Tools Required
Standard framing tools plus equipment suitable for heavy components.
Essential tools:
- Circular saw
- Miter saw
- Drill and impact driver
- Framing hammer
- 4 ft or longer level
- Speed square
- Tape measure
- Chalk line
- Ladders
- Shovel and rake
- Plate compactor or heavy hand tamper
Helpful tools:
- Pneumatic framing nailer
- Roofing nailer
- Laser level
- Sawhorses
- Clamps
Assistance is typically required. Long walls and heavy rafters are difficult to handle alone.
Step-by-Step Build Overview
High-level sequence only.
- Prepare and compact gravel base across full footprint.
- Build pressure treated floor frame and verify square.
- Install floor sheathing.
- Frame walls on the ground with double door opening.
- Raise walls with assistance, plumb, and brace securely.
- Install double top plates tying walls together.
- Install ridge board and rafters.
- Add collar ties or ceiling joists.
- Install roof sheathing.
- Install drip edge and underlayment.
- Install shingles.
- Install wall sheathing if required.
- Install siding.
- Build and hang double doors.
- Install trim and hardware.
- Check level and square frequently to avoid cumulative errors.
Common Mistakes
- Using undersized floor joists for the span. Causes bounce and long-term sagging.
- Poor base preparation. Larger structures amplify foundation problems.
- Underestimating material quantities. Leads to delays and additional costs.
- Attempting to lift walls without help. Heavy wall sections are dangerous to handle alone.
- Weak double-door framing. Leads to sagging doors and alignment issues.
- Skipping structural connectors. Wind loads increase with building size.
- Inadequate roof framing. Wide spans require proper lumber sizing.
Is It Worth Building Yourself?
DIY material cost: $6,000 to $9,500
Typical prebuilt 14x20 shed delivered in 2026: $10,000 to $18,000
DIY savings can range from $4,000 to $8,000.
Consider:
- Construction time of roughly 5 to 7 days with help
- Transportation logistics
- Structural accuracy requirements
- Possible permits or zoning rules
For homeowners comfortable with construction tasks and heavy materials, DIY construction is usually financially worthwhile.
Get Exact Cut Diagrams and Printable Plans
This material list provides realistic quantities and cost expectations for a 14x20 shed.
It does not include:
- Exact rafter angle calculations
- Detailed wall framing layouts
- Header engineering details
- Precise overhang measurements
- Optimized cut lists
- Printable construction diagrams
On wide-span structures, layout errors can waste significant material and time.
Detailed blueprints with exact measurements, framing layouts, and printable cut sheets simplify construction, reduce waste, and help ensure structural accuracy.
For large one-time builds, complete plans typically save more money than they cost by preventing mistakes and rework.