Thinking about a new deck for your garden and wondering how long is this actually going to take? It’s easily one of the first questions we get at NexGen Landscapes from homeowners across Bournemouth, and honestly, it’s a really fair one. Whether you’re dreaming of summer BBQs, a quiet sun-soaked spot for morning coffee, or extra family entertaining space, knowing the realistic timeline helps you plan properly — from booking installers to enjoying your first evening on the new boards.
Here’s the good news: most decking projects are wrapped up faster than people expect. The longer parts? It’s all in the prep, planning, and finishing touches. So grab a brew — let me walk you through the full decking installation timeline in Bournemouth, with all the realistic timings, factors, and insider tips from years of building decks across Westbourne, Southbourne, Boscombe, and beyond.
How Long Does Decking Installation Take in Bournemouth?
Here’s the short answer most homeowners want upfront:
| Deck Size & Type | Installation Time |
|---|---|
| Small ground-level deck (under 15m²) | 1–2 days |
| Average back garden deck (15–30m²) | 2–3 days |
| Larger raised deck with steps | 3–5 days |
| Multi-level or premium composite deck | 5–7 days |
So the physical build is usually fast — but planning, prep, and finishing extend the overall project. Let’s break it down properly.
The Full Decking Installation Timeline (Day by Day)
A standard 15–30 square meter decking installation takes about 3 to 5 days from start to finish. A typical timeline breaks down into site prep, subframe construction, board laying, and finishing touches. Larger, multi-level decks with stairs or balustrades can push this timeline to 7-10 days
Step 1: Site Survey and Design (Pre-Installation)
Before any tools come out, we always start with a proper site visit. This stage usually takes 1–3 days from initial enquiry, depending on availability. We measure your space, check ground levels, discuss materials (timber or composite), and finalise the design — including any extras like steps, lighting, or balustrades.
Pro tip: Don’t skip this. Getting the design right upfront saves days of fixing problems later.
Step 2: Ground Preparation and Foundations (Day 1)
This is where the real work starts.
Typical Day 1 tasks include:
- Clearing the existing garden area
- Removing old decking, paving, or turf
- Levelling the ground
- Laying a weed membrane
- Setting concrete post anchors or pads
- Allowing concrete to cure (a few hours minimum)
For most Bournemouth gardens, ground prep takes around half a day to a full day. Tricky sites with slopes, tree roots, or poor access can stretch this stage.
Step 3: Building the Sub-Frame (Day 1–2)
Once the foundations are set, we build the sub-frame — the structural skeleton beneath your deck.
This includes:
- Setting the bearers and joists at correct spacing (usually 400mm centres)
- Fitting joist hangers and noggins for rigidity
- Levelling the entire frame
- Treating any cut ends with preservative
For an average back garden deck, this stage takes half a day to a full day.
Why it matters: A solid, level sub-frame is the difference between a deck that lasts 20 years and one that warps in 5.
Step 4: Laying the Deck Boards (Day 2–3)
Now the visible bit — laying your deck boards.
The process involves:
- Starting from the cleanest edge (usually facing the house)
- Spacing boards correctly for drainage and expansion
- Using hidden fixings or stainless steel screws
- Cutting clean edges and angles
- Adding fascia boards for a clean finish
Timing:
- Timber decking: 1 day for an average garden
- Composite decking: 1–1.5 days (extra precision required)
Premium composite brands like Trex, Millboard, and Cladco take a touch longer due to specialist hidden-fixing systems — but the finish is worth it.
Step 5: Finishing Touches (Day 3–4)
The final stretch is all about turning a deck into a feature you’ll genuinely love.
This stage includes:
- Installing steps or balustrades
- Adding deck lighting or recessed spotlights
- Building integrated planters or seating
- Treating timber with oil or stain
- A full clean-up and rubbish removal
Typically takes half a day to a full day, depending on extras.
Timber vs Composite: Does Material Affect Install Time?
Yes — but maybe not as much as you’d think.
Timber Decking
- Faster to cut and fit on-site
- Slightly quicker install: typically 2–3 days
- Needs treating after installation
Composite Decking
- Requires precise hidden fixings
- Slightly longer install: typically 3–4 days
- No treatment needed — done as soon as it’s down
For Bournemouth’s coastal homes, composite is often worth the extra day — it’s far more weather-resistant and lasts decades longer.
Best Time of Year for Decking Installation in Bournemouth
Bournemouth’s mild coastal climate makes decking installation possible year-round — but some seasons work better than others.
Best Months
- Spring (March–May) Ideal — dry ground, mild temps, perfect prep conditions
- Summer (June–August) Brilliant — fast concrete curing, enjoy the deck immediately
- Early Autumn (September–October) Very good — mild weather, fewer install delays
Acceptable Months
- Late Autumn / Winter (November–February) Possible, but rain and frost can delay foundations and concrete curing
Honestly? If you book in spring or early summer, you’ll be enjoying your new deck through the entire BBQ season.
DIY vs Professional Decking Installation
Plenty of homeowners ask whether they can save money going DIY. Here’s the honest comparison:
DIY Decking
- Time: 5–10 days (much slower without experience)
- Cost: Cheaper materials only — but tool hire, mistakes, and rework add up
- Risk: Uneven joists, warping, drainage failure
- Best for: Small, simple ground-level decks for confident DIYers
Professional Decking
- Time: 2–5 days
- Cost: Higher upfront — but a longer-lasting, properly built result
- Result: Level, durable, beautifully finished
- Best for: Anyone wanting it done right the first time
For anything larger than 10m² or raised decks, professional installation pays for itself in both time and longevity.
How Much Does Decking Installation Cost in Bournemouth?
Based on recent NexGen Landscapes projects across the BH postcode area:
| Decking Type | Cost per m² (Supply + Install) |
|---|---|
| Softwood Timber | £100–£160 |
| Hardwood Timber | £180–£260 |
| Composite Decking | £200–£350 |
Costs vary based on access, ground conditions, deck height, and design complexity.
Do You Need Planning Permission?
Mostly — no. But it’s worth knowing the rules:
- Decking is exempt from planning permission if it sits less than 30cm above ground level, and the deck (plus other outbuildings) covers no more than 50% of your garden
- Listed buildings or conservation areas: Always check with BCP Council first
- Raised decks above 30cm may need permission, especially if they overlook neighbours
If you’re unsure, our team will check the rules for your specific Bournemouth property before any work starts.
Final Thoughts
So, how long does decking installation take in Bournemouth? For most homeowners — somewhere between 2 and 5 days of focused work, with the design and prep stages happening in the days leading up. The real secret to a stunning, long-lasting deck isn’t speed though. It’s quality materials, expert installation, and solid foundations. Get those three right, and you’ll have a beautiful outdoor space you’ll enjoy for decades.
Frequently Asked Questions (FAQs)
How long does decking installation take in Bournemouth?
Most decking projects are completed in 2–5 days, depending on size, design, and material. Small ground-level decks can be finished in just 1–2 days.
Can decking be installed in winter?
Yes, but cold or wet weather can slow concrete curing and ground prep. Spring through early autumn is ideal for Bournemouth.
How long before you can walk on new decking?
Immediately for the deck itself — but allow 24–48 hours for any concrete foundations to fully cure before heavy use.
Is composite decking quicker to install than timber?
Slightly slower due to specialist fixings — but the long-term benefits (zero maintenance, 25+ year lifespan) outweigh the extra install time.
Do I need planning permission for decking in Bournemouth?
Usually not, provided it’s under 30cm high and within standard garden limits. Always check with BCP Council if unsure.
