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Small tantalised garden shed with onduline roofing and a single door
Planning Permission & Regulations

Do You Need Planning Permission for a Shed? (UK 2025 Guide)

Do You Need Planning Permission for a Shed? (UK 2025 Guide)

In many cases, you don’t need planning permission for a shed in the UK — because most sheds fall under permitted development. However, there are strict rules on height, location, boundary distance, and extra restrictions for listed buildings, conservation areas, and designated land.

Use this guide as a practical checklist, then double-check your situation using official sources (linked below).

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Important: Planning rules can differ across the UK and can be affected by local conditions (e.g., Article 4 Directions). If you’re unsure, check your local planning authority or the official guidance linked in this post.
Large apex garden shed in a residential garden

The Quick Answer (Most UK Homes)

You typically do not need planning permission for a shed if it meets permitted development rules: it must be an outbuilding that’s incidental to the enjoyment of the home (e.g., storage, hobby, garden use), not a separate dwelling.

Most common reasons you DO need permission

  • The shed is too tall (especially near boundaries)
  • It’s placed in front of the principal elevation (front of the house)
  • Your property is listed / on designated land / in a conservation area
  • You’re adding living accommodation or something that functions like a separate residence

UK 2025 Shed Planning Rules: Height & Boundary Limits

The roof type matters. As a rule of thumb, sheds are more likely to comply when they’re: lower than 2.5m near boundaries and positioned behind the house.

Situation Typical permitted development height limits
Within 2m of a boundary Max 2.5m overall height (this is the big one people get caught by)
More than 2m from a boundary (dual-pitched / apex roof) Max 4m overall height
More than 2m from a boundary (pent / flat / mono-pitch) Max 3m overall height
Eaves height (typical rule) Max 2.5m eaves height

Want a shed style that matches these limits? Apex Sheds | Pent Sheds | Small Sheds

Small pent shed that typically fits within common UK planning height limits

Other Key Permitted Development Conditions

  • Location: Outbuildings usually must not be built forward of the principal elevation (front of the house).
  • Garden coverage: Outbuildings + extensions typically must not cover more than 50% of the curtilage.
  • Use: Must be incidental to the main home (storage/workshop/gym) — not a separate dwelling.
  • Storeys: Typically must be single storey.
  • Balconies/verandas/raised platforms: Often restricted (raised platforms commonly limited to around 0.3m).
If you’re planning a larger garden room: rules can still allow it under permitted development, but height, boundary distance, and “use as living accommodation” are the common pitfalls. See options here: Garden Rooms.

Listed Buildings, Conservation Areas & Designated Land

Extra care is needed if your property is listed or located on designated land (including many conservation areas). Permitted development rights may be restricted, and you may need planning permission even for a small shed.

If any of these apply, it’s smart to check before buying:

  • Listed building / within the curtilage of a listed building
  • Conservation area or similar designation
  • Article 4 Direction (removes certain permitted development rights)

For higher-security storage (often planned to be compact and boundary-friendly), browse: Security Sheds or Motorbike Sheds.

Security-style garden shed that may be suitable for tighter boundary placements

Simple “Do I Need Permission?” Checklist

In most cases, you’re on safer ground if you can tick all of these:

  • The shed is behind the house (not in front of the main elevation).
  • It’s single storey and used for storage/workshop/hobby (not a separate home).
  • If it’s within 2m of a boundary, it stays at or below 2.5m overall height.
  • If it’s more than 2m from a boundary, it stays within the relevant roof height limit.
  • Your property isn’t listed and isn’t subject to special restrictions (or you’ve checked them).

If you want a shed built to your size and layout (helpful for staying within height limits): Use the Shed Builder Delivery & Installation

Choosing a Shed That’s Easier to Keep Compliant

If you’re trying to avoid planning issues, these categories are often easier to fit within common limits:

Looking for value? Sheds on Sale Cheap Sheds

BY January 19, 2026
Medium tantalised shed with a double door and two side windows
shed decor

How to Paint a Shed (Best UK Paints & Techniques)

How to Paint a Shed (Best UK Paints & Techniques)

Painting your shed isn’t just about looks — it’s essential protection against rain, rot, and UV damage. This guide explains how to paint a shed properly, what paints to use, and how to make the finish last for years.

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Why Painting a Shed Is Important

Painting your shed protects the timber from rain, UV exposure, mould, and cracking. It also improves appearance and can extend the lifespan of your shed by many years.

  • Seals timber against moisture
  • Prevents rot and fungal growth
  • Enhances appearance and colour longevity

Most garden sheds and wooden sheds require regular re-treatment every 2–5 years.

Wooden garden shed freshly painted for weather protection

What Paint Should You Use on a Shed?

Not all paints are suitable for exterior timber. For best results, use products designed for outdoor use.

  • Shed & Fence Treatments: Penetrate timber and resist moisture.
  • Exterior Wood Paint: Thicker coating, more colour choice.
  • Wood Preserver: Protects against rot and insects.

Always check that the product is suitable for exterior wood and compatible with pressure-treated timber.

Shed being painted with exterior wood treatment

How to Paint a Shed (Step-by-Step)

  1. Prepare the surface: Brush off dirt, algae, and loose paint.
  2. Repair damage: Fill cracks or sand rough areas.
  3. Apply the first coat: Use a brush or roller following the wood grain.
  4. Allow to dry: Follow manufacturer drying times.
  5. Apply a second coat: For full weather protection.
Tip: Always paint on a dry day with temperatures above 10°C.
Garden shed freshly painted and weatherproofed

How Often Should You Repaint a Shed?

Most sheds need repainting every 2–5 years depending on exposure and paint quality. South-facing sheds may require more frequent treatment.

Regular maintenance dramatically extends the life of your shed and keeps it looking fresh.

Choosing the Right Shed

If your current shed is beyond repair, consider upgrading:

Final Tips

Proper preparation and high-quality paint make the biggest difference. A well-painted shed can last decades with only minimal maintenance.

Find Sheds Near You View Shed Deals

BY January 12, 2026
Small timber garden shed shown from side angle, featuring shiplap cladding, felt roof, and secure door hinges with 3 windows.
Shed roofing & construction

How to Waterproof a Shed (UK Rain, Damp & Condensation Guide)

How to Waterproof a Shed (UK Rain, Damp & Condensation Guide)

Water damage is one of the most common reasons sheds fail early. In this guide, you’ll learn how to waterproof a shed properly — from the roof and walls to ventilation and ground protection.

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Why Waterproofing a Shed Is Essential

UK weather exposes sheds to heavy rain, frost, and prolonged damp conditions. Without proper waterproofing, moisture can lead to:

  • Rotting timber
  • Mould and mildew
  • Rusting tools and stored items
  • Shortened shed lifespan

Whether you own a garden shed, wooden shed, or a security shed, weatherproofing is essential.

Garden shed with felt roof and weatherproof finish

Step 1: Protect the Roof

The roof takes the most punishment from rain and snow. Ensure:

  • Felt is in good condition with no tears
  • Edges are sealed and nailed down
  • No standing water remains after rainfall

If the felt is damaged, consider replacing it completely rather than patching.

Felt roof installed on garden shed

Step 2: Seal Walls & Timber Panels

External cladding should be treated regularly with a water-repellent wood preservative. This prevents moisture ingress and extends timber life.

  • Apply treatment every 1–2 years
  • Pay extra attention to joints and edges
  • Choose a breathable treatment for moisture escape

Pressure-treated sheds offer longer protection, but still benefit from maintenance.

Large wooden shed with weatherproof treatment

Step 3: Prevent Condensation

Condensation is often mistaken for leaks. To reduce it:

  • Ensure airflow through vents or windows
  • Avoid storing wet items inside
  • Use breathable membranes or insulation

Condensation control is especially important for workshop sheds and tool storage.

When to Upgrade or Replace Your Shed

If your shed shows signs of structural rot or repeated leaks, upgrading may be more cost-effective.

Consider browsing: Pressure Treated Sheds | Large Sheds | Sheds on Sale

Final Thoughts

Waterproofing your shed properly protects your investment and keeps your contents safe year-round. With regular maintenance and good-quality materials, your shed can last decades.

Find Sheds Near You Browse Shed Offers

BY January 5, 2026
Timber garden shed shown from side angle, featuring shiplap cladding, felt roof, and secure door hinges.
Shed roofing & construction

How to Build a Shed Roof (Apex & Pent – UK Guide)

How to Build a Shed Roof (Apex & Pent – UK Guide)

Building a shed roof correctly is essential for keeping your shed weatherproof, durable, and long-lasting. This guide explains how to build both apex and pent shed roofs, including timber structure, coverings, and best UK practices.

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Understanding Shed Roof Types

The two most common shed roof designs in the UK are apex and pent. Each has different structural and drainage benefits.

  • Apex roof: Traditional pitched roof with a central ridge – ideal for rain runoff.
  • Pent roof: Single sloping roof, modern look, ideal for positioning against walls.

Explore available designs: Apex Sheds | Pent Sheds

Large apex roof shed installed on concrete base

What You Need to Build a Shed Roof

  • Structural timber (rafters, ridge board, joists)
  • Exterior grade OSB or tongue-and-groove boards
  • Roofing felt or felt shingles
  • Galvanised nails or screws
  • Drip edge or fascia boards

Quality materials ensure better weather resistance and longer life.

Large apex garden shed with two doors and four windows

How to Build a Shed Roof (Step-by-Step)

  1. Build the roof frame – Cut rafters to size and assemble on flat ground.
  2. Fix the frame to the shed walls ensuring it is square and level.
  3. Install roof boards using exterior-grade boards or OSB.
  4. Add roofing felt, starting from the bottom edge upward.
  5. Secure ridge cap for weather protection.
Tip: Always allow a small overhang at the front and rear to prevent rainwater running down the walls.
Pent shed with felted roof installed

Choosing the Right Roof for Your Shed

The best roof depends on size, exposure, and use:

  • Apex roofs: Better drainage, classic appearance
  • Pent roofs: Modern look, ideal for wall placement
  • Heavy-duty sheds: Thicker framing and stronger felt systems

Explore suitable models: Heavy Duty Sheds, Medium Sheds, Large Sheds

Common Mistakes to Avoid

  • Not allowing enough roof overhang
  • Fixing felt in cold or damp conditions
  • Skipping battens or ridge protection
  • Using indoor-grade timber outdoors

Avoid these mistakes and your roof can last 10–15 years or more.

Final Thoughts

Building a shed roof correctly protects your investment and ensures years of reliable use. Whether you’re repairing or starting from scratch, proper materials and technique make all the difference.

Find Sheds Near You View Sheds on Sale

BY December 29, 2025
Shed roofing & construction

How to Refelt a Shed Roof (Costs, Materials & Methods)

How to Refelt a Shed Roof (Costs, Materials & Methods)

Refelting a shed roof is one of the most effective ways to extend the life of your garden building. This guide explains how to refelt a shed roof properly, the tools you’ll need, and when it’s better to replace the roof covering altogether.

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When Should You Refelt a Shed Roof?

Most felt roofs last between 8–15 years depending on exposure and quality. Signs it’s time to refelt include:

  • Cracked or lifting felt
  • Water ingress or damp inside the shed
  • Loose or rusted felt tacks
  • Visible daylight through roof joints

Refelting early prevents timber rot and avoids full roof replacement.

Garden shed with newly felted roof

What You’ll Need to Refelt a Shed Roof

  • Mineral or polyester roofing felt
  • Galvanised clout nails or felt tacks
  • Hammer or nail gun
  • Sharp utility knife
  • Timber battens (for ridge capping)

For best results, choose a high-quality felt rated for UK weather conditions.

Felted shed roof with neat edge detail

Step-by-Step: How to Refelt a Shed Roof

  1. Remove old felt: Carefully pull off old felt and remove nails.
  2. Inspect the roof boards: Replace any rotting timber.
  3. Lay the first strip: Start at the bottom edge with a slight overhang.
  4. Fix with nails: Nail along the top edge only, spacing nails evenly.
  5. Overlap layers: Overlap by at least 75mm to shed water.
  6. Finish the ridge: Fold or cap the ridge with a final strip.
Tip: Never felt in wet or frosty weather — moisture trapped beneath the felt will shorten its lifespan.
Freshly felted shed roof with clean edges

How Long Does Shed Felt Last?

On average:

  • Standard felt: 5–8 years
  • High-quality mineral felt: 10–15 years
  • Reinforced felt: Up to 20 years with good maintenance

Regular inspections and prompt repairs can significantly extend lifespan.

When to Replace the Entire Roof

If the roof boards beneath the felt are warped, rotten, or sagging, replacing the felt alone won’t solve the problem.

In these cases, consider upgrading to a new shed: Wooden Sheds | Pressure Treated Sheds | Sheds on Sale

Final Advice

A properly felted roof protects your shed from water damage and extends its lifespan significantly. With the right tools and preparation, refelting is a manageable DIY task that delivers long-term value.

Find Sheds Near You Browse Shed Deals

BY December 28, 2025
Small apex shed with onduline roofing and a single door
Shed roofing & construction

How to Felt a Shed Roof (UK Weather-Proofing Guide)

How to Felt a Shed Roof (UK Weather-Proofing Guide)

A properly felted shed roof is essential for keeping your building dry, protected, and long-lasting. In this guide, we explain exactly how to felt a shed roof, what materials to use, and how to avoid the most common mistakes.

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Why Felting a Shed Roof Is Important

Shed roofing felt acts as the main weather barrier, protecting timber panels from rain, frost, and long-term moisture damage. Without proper felting, even pressure-treated sheds can suffer rot and warping.

  • Prevents water ingress
  • Extends shed lifespan
  • Reduces timber movement
  • Improves overall weather resistance

Felted roofs are standard on most: Garden Sheds, Wooden Sheds and Security Sheds.

Wooden shed with felted roof installed correctly

What You Need to Felt a Shed Roof

  • Green mineral roofing felt or heavy-duty polyester felt
  • Galvanised clout nails or felt tacks
  • Hammer or roofing hammer
  • Sharp knife or utility blade
  • Timber battens for ridge capping (if applicable)

Quality materials make a big difference — cheaper felt often cracks within 1–2 winters.

Garden shed with felt roof fitted neatly along edges

How to Felt a Shed Roof (Step-by-Step)

  1. Prepare the roof: Ensure boards are dry, clean, and securely fixed.
  2. Start at the bottom edge: Roll out the felt horizontally with a slight overhang.
  3. Fix with clout nails: Nail every 150–200mm along the top edge.
  4. Overlap sections: Each layer should overlap the previous one by at least 75mm.
  5. Secure ridge section: Fold felt over the apex or use a separate ridge strip.
  6. Seal edges: Trim neatly and ensure edges are watertight.
Top tip: Always felt on a dry, mild day. Cold or damp conditions can cause the felt to shrink or lift later.
Timber shed with freshly installed felt roof

When Should You Replace Shed Felt?

  • Visible tears, cracks, or lifting edges
  • Water marks or damp inside the shed
  • Felt shrinking or curling back
  • Roof boards becoming exposed

If the structure itself is sound, refelting is far cheaper than replacing the entire shed.

Best Sheds for Felt Roofing

Felt roofing works particularly well on:

Looking for something more durable? Pressure Treated Sheds

Final Tips

A well-fitted felt roof can last 10–15 years when installed correctly. Regular checks after winter will help catch small issues before they become costly repairs.

Find Sheds Near You View Sheds on Sale

BY December 28, 2025
Small apex shed with a single door and onduline roofing
Shed Guides, Shed Bases & Construction

Do I Need a Shed Base on Slabs? (UK Advice & Best Practice)

Do I Need a Shed Base on Slabs? (UK Advice)

If you're planning to install a garden shed, one of the most common questions is whether you need a shed base on paving slabs. The answer depends on your shed size, ground conditions, and how long you want it to last.

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Do You Need a Shed Base on Slabs?

In most UK gardens, yes — a shed base made from paving slabs is recommended. Slabs provide a stable, level platform that protects the shed from ground moisture and movement.

  • Prevents sinking and uneven floors
  • Reduces damp and rot in timber floors
  • Extends the life of your shed

If your shed is small and lightweight, alternatives like pressure-treated bearers may work — but for anything over 6x4ft, a slab base is strongly recommended.

Large wooden shed installed on paving slab base

When a Slab Base Is the Best Choice

  • Medium to large garden sheds
  • Workshops or storage sheds with heavy contents
  • Uneven or soft garden ground
  • Areas with poor drainage

Ideal for: Workshop Sheds, Large Sheds and Security Sheds.

12x8 wooden shed on paving slab base

How Thick Should a Slab Base Be?

Layer Recommended Depth
Excavation 150–200mm
Type 1 Sub-base 100mm (compacted)
Sand or Mortar Bed 25–40mm
Paving Slabs 35–50mm

For official installation guidance, see: Paving Expert – Laying Flags

Do I Need a Base for All Sheds?

Not always — but for most sheds, a solid base is strongly recommended.

  • Small tool sheds: Can sometimes sit on treated bearers.
  • Medium sheds: Best on slabs or concrete.
  • Large or heavy sheds: Require a solid slab or reinforced base.

Browse suitable options: Small Sheds | Medium Sheds | Large Sheds

Common Mistakes to Avoid

  • Skipping the sub-base entirely
  • Placing slabs directly on soil
  • Not checking for level in multiple directions
  • Installing the shed before the base has settled

If you want a professional finish, consider our full service: Delivery & Installation

Recommended Shed Types for Slab Bases

Slab bases work particularly well with:

Final Advice

A slab base is one of the most reliable foundations for a garden shed. When installed correctly, it prevents movement, improves longevity, and keeps your shed level for years.

Find Sheds Near You View Sheds on Sale

BY December 28, 2025
A small pent garden shed with 3 windows and a single door
Shed Bases & Construction

How to Build a Shed Base With Paving Slabs (UK Guide)

UK DIY Guide • Paving Slab Base

How to Build a Shed Base With Paving Slabs (UK Guide)

A paving slab shed base is a popular UK option because it’s neat, durable, and doesn’t require pouring a full concrete slab. The secret is simple: great ground prep + perfect levelling. This guide shows you the most reliable method used for garden sheds across the UK.

Design Your Shed Delivery & Installation

In this guide

  1. Why choose paving slabs for a shed base?
  2. UK base specs (depths, layers & sizes)
  3. Tools & materials checklist
  4. Step-by-step: build a slab base
  5. Common mistakes (and how to avoid them)
  6. FAQ
Pro tip: The base should be the shed footprint + 50–75mm extra all around. That overhang helps keep rain splash and mud away from the shed walls.
10x8 pent shed with door and two windows in a garden - stable shed starts with a level slab base
A level slab base prevents sticking doors, twisted frames, and pooling water under the shed.

Why choose paving slabs for a shed base?

Paving slabs are ideal if you want a clean finish and a firm, long-lasting platform without the cost and mess of a full concrete pour. A well-built slab base:

  • Creates a flat, stable surface for your shed floor and bearers
  • Can be built in stages (weekend-friendly)
  • Looks tidy and makes it easier to keep the shed perimeter clear

If you’re ever unsure about whether your shed/outbuilding needs permission, start with official guidance: Planning Portal – Outbuildings and GOV.UK – Permitted development technical guidance.

7x6 timber pent shed side angle with secure hinges - airflow under shed base reduces damp
Even on slabs, using bearers helps airflow and reduces damp risk under the floor.

UK slab base specs (depths, layers & sizes)

These specs suit most UK gardens and typical timber sheds. Soft ground, slopes, or heavier buildings may need extra depth and reinforcement.

Layer What to use Typical thickness
Excavation Remove turf/topsoil to firm ground Usually 150–200mm total depth (depending on slab thickness)
Sub-base MOT Type 1 (well compacted) ~100mm (more on softer ground)
Bedding layer Mortar bed or sharp sand/grit bedding* 25–40mm
Paving slabs Concrete paving flags Varies (often 35–50mm)
Bedding choice: Many UK installers prefer a full mortar bed for best support and fewer rocking slabs. For manufacturer installation principles (excavation, sub-base, bedding, levels), see: Marshalls – Concrete paving installation guidelines (PDF) .

For extra reading on practical slab laying techniques (sub-base, bedding, levelling), this is a widely used reference: Pavingexpert – How to lay flags and slabs.

Tools & materials checklist

Materials

  • Geotextile membrane (weed control + separation)
  • MOT Type 1 sub-base
  • Sharp sand / grit sand and cement (if using mortar)
  • Paving slabs (choose a size that fits your shed footprint neatly)
  • Timber boards for edging (optional but helpful for clean lines)

Tools

  • Spade, rake, wheelbarrow
  • Compactor plate (best) or hand tamper
  • Spirit level (long), straight edge, string line
  • Rubber mallet

Ordering a new shed soon? Start here: Shop All Sheds Pent Sheds Apex Sheds

15x8 pent shed with extension and multiple windows - larger sheds benefit from careful slab base levelling
Larger sheds highlight small base errors—take your time on compaction and levelling.

Step-by-step: How to build a shed base with paving slabs

1) Mark out the area

Peg out the footprint and add 50–75mm all around. Use string lines and check squareness by measuring diagonals.

2) Excavate to firm ground

Remove turf and soft topsoil. Dig deep enough for: sub-base + bedding + slab thickness. On many UK gardens this is around 150–200mm total.

3) Lay membrane + sub-base

Lay a geotextile membrane, then add MOT Type 1 in layers and compact thoroughly. Poor compaction is the #1 reason slab bases sink or go out of level.

4) Add bedding layer

Add a 25–40mm bedding layer. Many DIYers use sharp sand; many professionals use a full mortar bed for best support. Either way, your goal is a consistent, level bedding plane.

5) Lay slabs and level as you go

Start from one corner, place each slab, and tap into level with a rubber mallet. Keep checking:

  • Front-to-back level
  • Side-to-side level
  • Diagonals (to avoid twist)

6) Final checks + install shed on bearers

Re-check the whole base with a long straight edge. When installing the shed, use treated bearers where possible to reduce moisture transfer and improve airflow.

Quick quality test: Place your straight edge across multiple slabs—if you can see daylight under it, you’ve got low/high spots that can cause the shed floor to rock.

Want an easy, done-for-you option? Book Delivery & Installation

Common mistakes (and how to avoid them)

Mistake What happens Fix
Skipping membrane Sub-base mixes with soil, base settles, weeds push through Install a proper geotextile layer before Type 1.
Not enough compaction Slabs rock or sink over time Compact Type 1 in layers; don’t rush.
Base too small Mud splash, damp lower cladding, poor drainage Make the base 50–75mm larger all around.
Base not level Doors stick, frames twist, felt/cladding strains Level the base (not the shed). Check diagonals and use a straight edge.

If you’re installing something heavier (workshop, motorbike, or security shed), browse: Workshop Sheds Motorbike Sheds Security Sheds

FAQ: Paving slab shed bases

Do paving slabs need mortar for a shed base?

A full mortar bed usually gives the best support and reduces rocking slabs. Sharp sand can work for lighter sheds, but prep and compaction matter more than anything.

How deep should I dig for a slab shed base?

Dig deep enough for sub-base + bedding + slab thickness. For many UK gardens this is around 150–200mm total, depending on your slab thickness and ground conditions.

Is a slab base good for larger sheds?

Yes—if the sub-base is thick enough and properly compacted. For large sheds, take extra care levelling and consider a heavier-duty sub-base build-up.

Do I need planning permission for a shed?

Often no, but it depends on size, height, and location. Check: Planning Portal and GOV.UK technical guidance.

BY December 28, 2025
Side angle of a heavy duty pent garden shed with a single door and two windows
Shed Bases & Construction

How Thick Should a Concrete Shed Base Be? (UK Guide & Specifications)

How Thick Should a Concrete Shed Base Be?

The correct concrete thickness is essential for keeping your shed stable, level, and protected from long-term movement. This guide explains exact slab depths, reinforcement advice, and UK best practice for building a concrete shed base.

Design Your Shed Installation Services

Recommended Concrete Thickness for Shed Bases

Shed Size / Use Concrete Thickness
Small sheds (6x4, 7x5) 100mm (4")
Medium sheds (8x6, 10x8) 100–125mm
Large or heavy-duty sheds 125–150mm + reinforcement
Workshops / motorcycle sheds 150mm reinforced concrete
Tip: For sheds storing machinery or motorbikes, reinforcing mesh (A142) dramatically improves strength and longevity.
Large wooden shed installed on a concrete base

How to Build a Concrete Shed Base (Step-by-Step)

  1. Mark out the shed footprint, allowing 50–75mm extra on each side.
  2. Excavate to around 150–200mm depth.
  3. Lay and compact a MOT Type 1 sub-base.
  4. Install timber shuttering to form the slab edge.
  5. Add a damp-proof membrane (DPM).
  6. Pour concrete and level with a straightedge.
  7. Allow 7–28 days curing before installing your shed.

Official UK construction guidance: Designing Buildings – Concrete

Large apex shed installed on a concrete base

Which Sheds Need a Concrete Base?

Concrete Base Cost in the UK

Item Typical Cost
Concrete (per m²) £60 – £90
Ground preparation £20 – £40 per m²
Professional installation £150 – £250 per day

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Frequently Asked Questions

Can I pour concrete directly onto soil?
No — always use a compacted sub-base and membrane to prevent cracking and movement.

How long should concrete cure before installing a shed?
Minimum 7 days, ideally 28 days for full strength.

Do I need planning permission?
Usually not, but always check: Planning Portal guidance.

Next Steps

Once your base is complete, choose the right shed for your garden:

Browse Garden Sheds Wooden Sheds Find Sheds Near You

BY December 28, 2025
Wooden shed with double doors.
Shed Bases & Construction

How to Build a Concrete Shed Base (UK Thickness, Cost & Specs)

How to Build a Concrete Shed Base (UK Thickness, Cost & Specs)

A properly built concrete shed base is the strongest and longest-lasting foundation for any garden building. In this guide, we explain exact thickness requirements, costs, UK building best practices, and when a concrete base is the right choice for your shed.

Design Your Shed Installation Services

When Do You Need a Concrete Shed Base?

A concrete base is recommended when installing:

  • Large or heavy garden buildings
  • Workshops or insulated garden rooms
  • Motorbike or security sheds
  • Sheds on sloped or soft ground

Explore suitable buildings here: Heavy Duty Sheds | Motorbike Sheds | Garden Rooms

Large wooden shed installed on a concrete base

Concrete Shed Base Thickness (UK Standards)

Shed Type Recommended Concrete Thickness
Small sheds (6x4 – 8x6) 100mm (4 inches)
Medium sheds (10x8 – 12x8) 100–125mm
Large / Heavy-duty sheds 125–150mm + reinforcement
Tip: For heavy buildings, install A142 steel mesh within the concrete slab for strength and crack resistance.

Step-by-Step: How to Build a Concrete Shed Base

  1. Mark out the area – allow 50–75mm extra on each side.
  2. Excavate to around 150–200mm depth.
  3. Add MOT Type 1 sub-base and compact thoroughly.
  4. Build shuttering using timber boards.
  5. Lay damp-proof membrane (DPM).
  6. Pour concrete, level using a straightedge.
  7. Allow to cure for at least 7 days (28 days ideal).

UK guidance on concrete strength and curing: Designing Buildings – Concrete

Large apex shed installed on a concrete base

Concrete Base Cost in the UK

Item Typical Cost
Concrete (per m²) £60 – £90
Ground preparation £20 – £40 per m²
Labour (if hired) £150 – £250 per day

Want a hassle-free solution? Professional Installation

Best Sheds to Install on a Concrete Base

Concrete bases are ideal for heavier buildings such as:

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Frequently Asked Questions

How long should concrete cure before installing a shed?
Minimum 7 days, ideally 14–28 days for full strength.

Can I install a shed directly on concrete?
Yes, but we recommend pressure-treated bearers to improve airflow and prevent moisture transfer.

Is planning permission required?
Usually no, but check official guidance: Planning Portal

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BY December 28, 2025
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