How to fit composite decking?

Fitting composite decking is similar to installing timber decking, but there are some small differences in terms of the gaps you need to leave between boards and the screws you use. We’ll go through a quick guide to show you the process involved in fitting composite decking so you can decide whether it’s something you want to do yourself. Prepare the area Prepare the area according to our instructions in the previous FAQs – or you can use an existing patio or concrete base if you have one. Measure and mark out the area using chalk (if using an existing base). Assemble the decking frame Build the outer frame as we show in our FAQs above; if the area you have planned is longer than your joists, you’ll need to join them together. When you’ve built the frame and it’s secure, ensure that it’s at the right level for water runoff and add risers, slabs or treated off-cuts of timber at 500mm intervals if you need to. Add joists The spacing of your joists will depend on the type of design you have chosen for your composite decking. If you’re laying arched boards horizontally, you’ll need to space the joists 300mm apart. Lay your composite decking boards If you’ve not got an overhang or it’s a fixed deck, fit starter clips along the outside edge of the frame and secure with screws provided with the composite decking. If you are working with an overhang, put the first board into position not exceeding 25mm. If you’re adding a fascia, put an off-cut of board under the overhang so you know it’ll be flush with the fascia. Pre-drill all fixing points, measuring in 30mm from the edge of the board. Secure the board to the joist below with composite decking screws. Slide a hidden fastener clip in so it sits within the groove of the deck board. It needs to be in the centre of the joist to keep the boards secure and ensure an expansion gap of 6mm. Tighten the clips until just tight, and repeat so there’s a clip at every joist. Add the next board, ensuring that the fastener clips sit within the groove – make sure you don’t force it. Repeat step 3. Continue steps 3 and 4 until you’re at the final board, which you should secure in the same way as you did the first. Add a fascia board If you’re adding a fascia, measure in 40mm from each end and add two guide marks: one at 40mm from the top and the other at 40mm from the bottom. Connect the marks, then mark at 300mm intervals down the board. Drill pilot holes, then put the fascia board into position. You need to make sure that there’s a 40mm ventilation gap between the bottom of the fascia and the ground. Ask someone to hold the board level until you’ve finished securing it with composite decking screws; you can get colour-matched ones so they don’t look unsightly at the end of your decking. Not so sure you want to carry out such a big project yourself? Get quotes from decking pros who will be able to fit composite decking much more quickly and easily.

Laying simple, ground-level decking may sound intimidating, but it doesn’t have to be. With careful planning and preparation, you can lay decking that you’ll be proud to show off to neighbours, family and friends. Here are a few tips to get you started. Plan carefully Draw out a plan, to scale, on paper. This will help you to know how many boards you’ll need and ensure that you don’t end up having to cut anything to fit. Prepare the area Measure out the site according to your plan and hammer a peg into each corner, then tie string around each peg to help you see what you’re working with. If you’re not laying on existing slabs, dig into the ground, lifting out turf if it’s there, and check that the site is level. Then add concrete slabs for more stability or lay weed-control fabric over the ground and cover with gravel to further prevent weed growth. Build your sub-frame Since a lot of people ask this, we’ve got a more detailed guide in the FAQ below. Lay your deck boards Start in one corner of the sub-frame and position the first board across the inner joists. You want the deck board in the opposite direction to the inner joists, ensuring that it’s flush with the frame. Position any end-to-end joins between the deck boards halfway across an inner joist so you can screw both boards into the joist for stability. Make sure you keep a gap of between 5-8mm to allow for expansion of the wood. Begin to screw your deck boards to the joists. You’ll need to secure the deck board to every joist is covers along your deck frame. Use two screws for every joist. Mark where you’re going to add your screws, ensuring that they are at least 15mm from the end of the board and 20mm from the outside edges. Drill pilot holes for the screws, being careful to only drill through the deck board and not the joist. Then screw the decking screws into the holes. Continue to screw in the deck boards, ensuring you leave the correct expansion gap. You can stagger the deck board joins across the deck for more strength. Sand down any cut ends if you need to before applying decking preserver to protect the timber from rotting. Although this is a simplified set of instructions, it’s enough for you to see whether you want to attempt to lay decking yourself – and if you don’t, you can get in touch with professionals who will be happy to give you a quote.

Wooden Decking in Carmarthen

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Wooden Decking in Carmarthen

Wooden decking is an increasingly common choice for providing outdoor seating areas in gardens. Because of the natural beauty of wood, they can be very elegant spaces which can be used year round with the addition of external heating and lighting. Wooden decking is typically fitted in locations in front of patio or French doors where they can create a seamless transition between inside and outside spaces. Wooden decking can come in any size or shape to complement any area. Curved designs or large areas linked by pathways can produce an impressive effect. Wooden decking is reasonably simple 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 an existing patio. It is necessary however to make certain that your wooden decking is structurally sound and able to take the load of any furniture or plants that you want to use on the decking. There is a variety of varieties of wood that can be used in wooden decking. Commonly decking is made of hardwood, but there are softwoods available that fulfil the durability requirements. As hardwood decking will require maintenance, which generally entails yearly cleaning and staining for weather proofing, composite woods are becoming popular for use in wooden decking as they are more robust and require significantly less maintenance.

Average Wooden decking cost in Carmarthen

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 Carmarthen, as reported by local LeadsDoWork members.

Wooden decking installation cost in Carmarthen 2026

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

Time frame: 1-4 days

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Carmarthen

Carmarthen is the county town and community of Carmarthenshire in Wales. Situated on the River Towy, it is eight miles north of its mouth at Carmarthen Bay. According to the 2011 Census, the town has a permanent population of around 14185, which demonstrates a slight population decrease because the 15854 residents recorded in the 2001 Census. It's claimed that Carmarthen is the oldest town in Wales, but the two settlements of Old Carmarthen and New Carmarthen were only united into a single borough in 1546. Nonetheless, it was undeniably the most populated borough in Wales over the course of the 16th century and continued to be so until the 18th century. Population only started to stagnate by the middle of the 19th century when towns with more dynamic economic centres started to develop in the South Wales coalfield, which attracted considerable numbers of people for work. The town is at the moment the place for a lot of institutions, including the administrative centre of Dyfed-Powys Police, the Carmarthen campus of the University of Wales, Trinity Saint David and Glangwili General Hospital. Several landmarks can also be located in Carmarthen. Although little remains of the original castle at Carmarthen, Carmarthen Castle is a well-known tourist attraction. The old Gatehouse continues to dominate Nott Square, and the motte is accessible to the public. Within the old walls of Castle House, visitors can find a museum along with a Tourist Information Centre. The town's parish church, St. Peter's Church, is identified to be the largest parish church inside the Diocese of St. David's, as well as possessing the longest nave, which is 60 metres from the west porch to east window. For all of your home upgrades, be certain that you employ trustworthy experts in Carmarthento ensure that you get the best quality.

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Wooden Decking in Carmarthen

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Wooden Decking in Carmarthen

Average Wooden decking cost in Carmarthen

Average price per Wooden decking job in 2026

Wooden decking installation cost in Carmarthen 2026

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