Wooden Decking in Guernsey

Compare Wooden Decking Prices in Guernsey

Wooden Decking in Guernsey

Wooden decking is an increasingly common option for creating outdoor seating areas in gardens. Due to the natural beauty of wood, they can be very fashionable areas which can be used year round with the addition of outside heating and light. Wooden decking is commonly fitted in locations in front of patio or French doors where they can create a smooth transition between interior and exterior spaces. Wooden decking is available in virtually any size or shape to complement any area. Curved designs or large areas joined by pathways can produce a striking effect. Wooden decking is relatively easy to install and causes little disruption, particularly in comparison to alternate options like patio or paving. It could even be installed over the top of a pre-existing patio. It is important however to be certain that your wooden decking is structurally sound and capable of taking the load of any furniture or plants that you want to use on the decking. There is a selection of species of wood that can be used in wooden decking. Often decking is constructed from hardwood, but there are softwoods available that fulfil the durability requirements. As hardwood decking will need maintenance, which usually requires annual cleaning and staining for weather proofing, composite woods have become popular for use in wooden decking because they are stronger and require far less maintenance.

Average Wooden decking cost in Guernsey

The typical cost of Wooden decking is £1500. Costs can change based upon the materials and the firm hired. The upper price range can be as high as £1725. The material costs are commonly approximately £375

Average price per Wooden decking job in 2026

Avg. price low	Avg. price low £1,125
Avg. price	Avg. price £1,500
Avg. price high	Avg. price high £1,725

£1900

£1425

£950

£475

£0

Prices based on actual Wooden decking costs for Guernsey, as reported by local LeadsDoWork members.

Wooden decking installation cost in Guernsey 2026

	Labour cost	£1,050
	Material cost	£375
	Waste removal	£75

Time frame: 1-4 days

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Guernsey

Guernsey is an island off the Normandy shoreline but nonetheless holds British Crown dependency. This island carries a population of 66,000 and also a density of 2,578 individuals for every sq mile. With the other major island of Jersey, Guernsey forms the group known as the Channel Islands. Guernsey housing is split between local market houses and open market properties. Anybody can live in open market buildings, but local market is limited to those who qualify. For home upgrades on the Guernsey Island, be sure you make use of vetted specialists to guarantee an excellent price and a quality finish.

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FAQs

If your deck isn’t going to be flat to the ground, it’s a good idea to have some kind of balustrade to avoid any tripping. If the gap between the deck and the ground is less than 600mm, use a 900mm balustrade. If it’s higher than 600mm, the balustrade should be 1100mm tall.

There are two ways to lay decking on uneven ground. We’ve explained how to build a raised deck in our FAQ ‘How to build a raised deck’ above, and that’s great for uneven ground or sloped gardens. But there’s another way that you can lay decking on uneven ground if you don’t want a raised deck: you can create a level supporting base. We’ll go through the basics here. Materials you’ll need

Paving slabs – old or cheap ones are fine
Timber for the frame and legs
Type 1 MOT hardcore

How to lay decking on uneven ground

Mark out the area as we explain in ‘How to lay decking’. Then, dig to 200mm below where you want to surface of the decking to be.
Add a 50mm layer of hardcore and make sure it’s compact.
Build the decking sub-frame as we describe in ‘How to build a deck frame’.
Lay out paving slabs along the edges and in the centre of the area. This will help to spread the weight of the decking.
Set the decking frame on the slabs, checking for high or low points and adding off-cuts of timber where needed. Don’t forget to sand and seal these off-cuts with decking preservative.
Add your joists and then the deck boards, leaving the recommended gaps of expansion of between 5-8mm.

Building your decking on top of paving slabs is a good way to get it level, but you still may not be able to get as good a finish as if a professional did it. If you’re in any doubt, get in contact with some decking specialists and see what they would recommend.

Usually, slipperiness is caused by algae or dirt on top of the deck or terrace. A full cleaning treatment should restore the natural grip of the wood or stone. If slipperiness is a persistent problem, consider installing grip mats in high traffic areas of the deck.

How much decking you need will – of course – depend on how big you plan your deck to be. There is an equation to help you work out how many deck boards you need. It’s a little complicated until you’ve been shown how it works, but once you know how to do it it’s easy to work out how much decking you need for any project. The equation takes into account the recommended 10% wastage and includes the expansion gaps that are required, which is between 5-8mm along the length of the deck boards (EGL, or expansion gap length) and 3mm along the ends of the deck boards (EGW, or expansion gap width) for timber. It also assumes you’re laying your decking horizontally, as if you’re looking for a diagonal or chevron design you’ll need more deck boards. Let’s go through an example, assuming you have a 10m x 6m area that you want to cover with decking made from timber boards that are 2.4m long and 144mm wide. We’ll use the EGL of 5mm and EGW of 3mm.

Calculate the surface area for your decking Multiply the length (L) of your decking area by the width (W): L x W = Decking Surface Area (DSA) in m² 10 x 6 = 60m²
Work out the coverage of your deck boards Add your deck board width (DBW) to the expansion gap length (EGL), then add the deck board length (DBL) to the expansion gap width (EGW). Then multiply these numbers. (DBW + EGL) x (DBL + EGW) = Single Board Coverage (SBC) 0.144m + 0.005m = 0.149m 2.4m + 0.003m = 2.403m 0.149 x 2.403 = 0.358m²
Calculate the number of deck boards you need Multiply the SBC by 1.1 to allow for 10% wastage. Then, divide the DSA by the SBC. DSA / SCB x 1.1 = Total number of boards required 60m² / 0.358m² x 1.1 = 184.36 boards – so round up to 185 so you’re not left short.

If that all seems a bit complicated for you, let a professional do the maths – they will be able to give you an idea of how much decking you’ll need in no time.

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