Decking Installation in Burwell - Materials and Your Options

Choosing the Right Decking Material Matters More Than Most People Expect

The material your deck is built from affects how it looks on day one, how much upkeep it needs every year and how long it lasts before it needs replacing. Picking the right one is not about finding the premium option - it is about matching the material to your actual situation. We lay out the main choices below with honest assessments of each.

Softwood Timber

Pressure-treated softwood, usually pine or spruce, is the most widely used decking material in UK gardens and for straightforward reasons. It is readily available, easy to work with and costs less per square metre than the alternatives. A softwood deck built on a sound frame with correct joist spacing typically looks good for several years before it needs its first oil or stain treatment.

The honest downside is maintenance. Softwood needs treating every one to two years to keep moisture out and prevent the surface from cracking and greying unevenly. Miss a couple of cycles and the boards become absorbent, which accelerates weathering significantly. If you are not prepared to set aside a weekend every year or so for cleaning and oiling, softwood will disappoint you.

• Lower upfront cost per square metre
• Easy to cut and fix on site, including for complex shapes
• Boards can be sanded back and refinished if they have gone patchy
• Needs annual or biennial oiling or staining to stay in good condition
• Less durable than hardwood or composite if maintenance is neglected

Hardwood Timber

European oak, sweet chestnut and tropical hardwoods such as ipe and garapa are all used for residential decking. Hardwood is denser, naturally more resistant to moisture and rot, and holds its colour and shape better than softwood without as frequent treatment. A well-specified hardwood deck that is oiled once a year will outlast a comparable softwood deck by a considerable margin.

The trade-off is cost. Hardwood boards typically run at two to three times the price of treated softwood per linear metre, and some species require pre-drilling for every fixing to avoid splitting. Tropical hardwoods in particular should come with Forest Stewardship Council (FSC) certification - this confirms the timber is sourced from managed forests, which matters when you are buying a volume of material.

• Higher natural durability and density
• Less frequent treatment needed than softwood
• Better resistance to surface wear in high-traffic areas
• Significantly higher material cost
• Check FSC certification for tropical species
• Some species are harder to source locally at short notice

Composite Decking

Composite boards are made from a mix of wood fibre and recycled plastic, bonded under pressure. They are designed to look like timber without the same maintenance demands. You do not need to oil or stain composite boards and they do not splinter or crack the way softwood does.

Composite decking costs more than softwood upfront and the gap is real. Budget somewhere between £60 and £120 per square metre for the boards alone, depending on the profile and brand, compared with roughly £15 to £35 per square metre for treated softwood. Over ten or fifteen years the running cost difference narrows considerably because composite needs very little maintenance. Whether the maths works in your favour depends on how long you plan to stay in the property and how much you value your weekends.

One practical point: composite boards still need a sound timber or steel subframe. The boards themselves do not rot, but the joists underneath them can if they are not specified correctly. A composite deck on a poorly built frame will still sag and move.

• Very low ongoing maintenance - wash down occasionally, no oiling required
• Does not splinter, making it popular where children use the deck regularly
• Consistent colour and profile, available in a range of finishes
• Higher upfront cost than softwood
• Cannot be sanded or refinished - scratches are permanent
• Quality varies significantly between manufacturers, so ask about the product specification

The Subframe - Where the Real Investment Goes

Whichever surface board you choose, the subframe is where a deck is won or lost. The frame consists of posts or bearers sitting on a stable base, joists spanning between them and all the fixings holding it together. A softwood deck on a well-built frame will outperform a hardwood or composite deck on a poor one.

Joists for a standard residential deck are typically 47 x 150 mm or 47 x 200 mm C16 structural timber, spaced at 400 mm centres for most board profiles. Posts in contact with or close to the ground need UC4-rated treatment at minimum. Getting these specifications right at the start is far cheaper than digging the frame out in five years and starting again.

Ground-Level Versus Raised Structures

A ground-level deck sitting less than 300 mm above soil or paving is simpler to build and uses less structural timber than a raised one. It also generally does not require a balustrade, which keeps costs down and keeps the garden open. The challenge with low-level decks is ventilation: air needs to circulate beneath the boards, otherwise moisture accumulates and the frame deteriorates faster than it should.

A raised deck, particularly one that steps up to a back door at a higher level or that creates a split-level terrace, needs more engineering. Posts, diagonal bracing and post-base fixings all add to the material cost and the time on site. If the deck is more than 600 mm above ground, a balustrade is required under building regulations, and that balustrade needs to be engineered into the frame from the start rather than added afterwards.

Grooved Boards, Hidden Fixings and Board Profiles

Surface boards come in different profiles. Smooth-topped boards look clean but can be slippery when wet. Grooved or ribbed boards shed water more readily and provide better grip underfoot - a worthwhile consideration on a north-facing deck that does not get much sun. Hidden fixing systems, where clips grip the board from the side rather than screws going through the face, give a cleaner finish and avoid the screw-head corrosion that can stain timber over time. They also make individual board replacement easier later.

Ask the Right Questions Before You Commit

Before agreeing to any decking installation in Burwell, ask the installer what treatment class the structural timber carries, what fixing specification they use and whether the board profile they are proposing drains freely. If you are considering composite, ask for the manufacturer's technical datasheet rather than just a sample board.

We are happy to talk through the options for your specific garden before you decide anything. Call Haverhill Fencers and tell us what you are thinking - we will give you a straight answer on what makes sense for your situation.