LED Decking Lights

Your deck deserves lighting that survives every UK winter — not cheap puck lights that corrode after one season. ATOM LED neon flex decking lights use UV-stable silicone rated to IP67 and IP68, providing a continuous dot-free light line that handles frost, rain, standing water, and direct UV without yellowing or cracking. Available in 24V and 48V with runs up to 50 metres from a single feed point, these are the decking lights professional landscapers and electricians actually specify for permanent outdoor installations across the UK in 2026.

Every neon flex in this collection is cut-anywhere flexible — trim to exact length on site without voiding the 5-year warranty. Choose from warm white (2700K–3000K), natural white (4000K), cool white (6000K), and RGB colour-changing options. All silicone jackets remain pliable from -40°C to +80°C, which means your decking lights will not stiffen, crack, or delaminate through a British winter. Free UK delivery on every order — call our Telford technical team on 01952 370028 if you need sizing help before you buy.

IP67 & IP68 waterproof · 24V & 48V · CRI90+ · Cut anywhere · Silicone UV-stable jacket · 5-year warranty · Up to 50m single feed · Free UK delivery

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1. Why choose neon flex over traditional decking lights?
2. What IP rating do you need for decking in the UK?
3. Should you choose 24V or 48V for decking runs?
4. How do you install neon flex on decking step by step?
5. Which colour temperature works best for deck lighting?
6. How do you prevent voltage drop on long decking perimeters?
7. What driver do you need for outdoor decking neon flex?
8. How do you seal connections to prevent water ingress?
9. Can you use RGB or RGBW neon flex on decking?
10. How does neon flex compare to recessed puck lights and solar decking lights?
11. What mistakes do people make with decking lights?
12. Why choose ATOM LED for your decking lighting project?

Quick decision summary: If you need a continuous line of light around a deck perimeter or down steps, use neon flex — not recessed puck lights. For most UK decking, IP67 in 24V warm white is the right choice. If your deck sits at ground level with standing water risk, or you want to recess into the surface, choose IP68. For perimeters longer than 15 metres from a single feed, choose 48V to avoid voltage drop. Call 01952 370028 if unsure.

Who this is for: Homeowners upgrading garden decking with permanent weatherproof lighting. Landscapers and garden designers specifying continuous-line deck edge lighting. Electricians fitting low-voltage outdoor lighting to BS7671. Property developers finishing outdoor living spaces for 2026 spring and summer.

Who this is NOT for: If you want temporary battery-powered or solar lights for occasional use, neon flex is over-specified — a solar stake light will do. If you need recessed uplighters that throw light upward through decking boards, you need a dedicated deck spot fitting, not neon flex. If your decking is fully covered by a permanent roof with zero rain exposure, standard indoor-rated COB strip in an aluminium profile may be more cost-effective.

Why choose neon flex over traditional decking lights?

Neon flex produces a continuous, dot-free line of light along the full length of your decking edge — something recessed puck lights cannot achieve. The silicone jacket acts as both diffuser and waterproof barrier, eliminating the dark gaps between individual fittings that make traditional deck spot layouts look uneven after installation. Neon flex is also far simpler to install, with no drilling into deck boards required.

Traditional recessed decking lights — the small round puck fittings sold at most DIY retailers — create isolated pools of light separated by dark gaps. On a typical 6-metre deck edge, you would need 8–10 individual puck lights spaced at 600–700mm intervals. Each one requires a 25–35mm hole drilled through the deck board, creating a potential water entry point and weakening the timber. Within 12–18 months in UK outdoor conditions, many budget puck fittings develop condensation inside the lens, and the spring clips that hold them in place corrode.

Neon flex solves every one of these problems:

• Continuous light line: No dark spots between fittings — the entire deck edge glows evenly from end to end, which is particularly effective on steps where safety matters.
• No drilling into deck boards: Neon flex mounts to the fascia face, the underside of a railing, or inside a routed channel — the structural integrity of your decking boards stays intact.
• Fully sealed construction: The silicone jacket is the waterproof barrier, so there is no separate lens to fog up or spring clip to corrode.
• Flexible routing: Neon flex bends around corners, follows curved deck edges, and wraps around planters — puck lights only work on flat horizontal surfaces.
• Lower long-term cost: One continuous run of neon flex replaces 8–12 individual fittings, 8–12 drill holes, and 8–12 potential failure points.

For 2026 deck design trends, landscape architects increasingly specify continuous perimeter lighting rather than spotted puck layouts. The clean line effect works with composite decking, hardwood, and softwood equally well. Browse the full neon flex collection to see all available profiles and IP ratings.

What IP rating do you need for decking in the UK?

For any UK decking exposed to rain, frost, and morning dew, IP67 is the minimum safe rating. IP65 is splash-rated only and will typically fail within one British winter due to condensation cycling — moisture enters during warm days and cannot escape when temperatures drop overnight. If your deck sits at ground level where water pools, or you plan to recess neon flex into the deck surface, choose IP68.

IP ratings are not marketing labels — they are tested standards that define exactly what conditions a product can withstand. The second digit is the one that matters for decking:

The reason IP65 fails on UK decking is the condensation cycle. British weather produces wide temperature swings — a sunny 18°C afternoon followed by a 2°C overnight frost is common from March through November. IP65 uses a thin coating or sleeve that allows micro-moisture ingress during warm humid conditions. When temperatures drop, that moisture condenses on the LED chips and PCB. Over repeated cycles, corrosion begins. This is why so many Amazon and Screwfix "outdoor rated" LED strips fail after one season — they are IP65, not IP67.

ATOM LED neon flex decking lights use full silicone encapsulation at IP67 and IP68. The silicone jacket is injection-moulded around the LED array, creating a monolithic seal with no separate sleeve or coating to peel away. This construction handles the freeze-thaw cycling that destroys lesser products. For more detail on waterproof ratings across the full range, see our IP67 neon flex and IP68 rated neon flex collections.

Should you choose 24V or 48V for decking runs?

For most standard UK decks up to approximately 12–15 metres of neon flex from a single feed point, 24V is perfectly adequate and offers the widest product choice. For larger decks, L-shaped layouts, or full perimeter runs exceeding 15 metres, 48V is the better choice because voltage drop occurs at half the rate of 24V over the same distance — keeping brightness consistent from start to finish.

Voltage drop is the single biggest cause of uneven brightness on decking installations. As current travels along the neon flex, resistance in the copper conductors causes a gradual voltage reduction. The light at the far end appears noticeably dimmer than the light near the driver. On 24V neon flex, visible dimming typically begins at around 10–15 metres depending on wattage per metre. On 48V, that threshold extends to approximately 20–30 metres from a single feed.

Both 24V and 48V DC fall within the SELV voltage threshold under BS7671 (120V DC ripple-free maximum), provided they are supplied from a suitably isolated, safety-rated driver. SELV is a system classification requiring correct installation — not just voltage alone. This makes both voltages appropriate for decking where people walk barefoot, unlike 240V mains-voltage strip which must never be used on or near decking surfaces.

If your deck perimeter measures 20 metres or more, 48V typically delivers a better result than trying to dual-feed 24V from both ends. Browse 48V LED drivers and 24V LED drivers to match your neon flex wattage.

How do you install neon flex on decking step by step?

Installation involves measuring your deck perimeter, cutting the neon flex to length on site, mounting it into an aluminium channel or directly to the fascia board using mounting clips, connecting to a suitably rated outdoor driver, and sealing every connection point against water ingress. Most competent DIYers can complete a single deck edge in 2–3 hours. Full perimeter installations with a driver enclosure typically take half a day.

Before you start, gather these tools and materials:

Tools required:

• Sharp scissors or side cutters: For cutting neon flex at the marked cut points — a clean straight cut is essential for proper end-cap sealing.
• Cordless drill with 3mm pilot bit: For fixing mounting clips or aluminium channel to the fascia board.
• Wire strippers: For preparing cable ends at the driver connection.
• Multimeter: For verifying driver output voltage before connecting neon flex.
• Heat gun (low setting): For shrinking waterproof heat-shrink over connection joints.

Materials required:

• Neon flex: IP67 or IP68 rated, in your chosen colour temperature and voltage.
• Outdoor-rated driver: IP67 minimum, sized at least 20% above total neon flex wattage.
• Mounting clips or neon flex aluminium profile: Stainless steel clips or anodised aluminium channel — never plain steel, which corrodes within months outdoors.
• Waterproof connectors: IP68-rated inline connectors or adhesive-lined heat-shrink tubing.
• Outdoor-rated cable: H07RN-F 2-core, 1.5mm minimum, for the run between driver and neon flex.

Step-by-step installation:

1. Measure and plan the run: Measure the total length of decking edge you want to light. Add 100mm to your measurement to allow for end caps and connection tails. Decide where the driver will sit — ideally within 3 metres of the neon flex start point, in a ventilated but sheltered location such as under the deck or inside an adjacent outbuilding. Sketch the layout so you know exactly where feeds and corners fall.
2. Cut the neon flex to length: Locate the cut marks printed on the side of the neon flex — these repeat at regular intervals (typically every 25–50mm depending on the product). Cut precisely on the mark with sharp scissors. A ragged or angled cut will prevent the end cap from sealing properly. Never power neon flex while it is still coiled — heat builds up inside the coil, damages the adhesive layer, and creates a fire risk.
3. Mount the channel or clips to the fascia: If using an aluminium profile, fix it to the fascia board with stainless steel screws at 300mm intervals. If surface-mounting with clips, space them every 200–250mm. Pre-drill pilot holes to prevent the fascia timber from splitting. Position the channel so the light faces outward or downward — not upward where it will cause glare when standing on the deck.
4. Seat the neon flex into the channel: Press the neon flex gently into the aluminium channel. It should sit snugly without forcing. If you are routing around corners, check the minimum bend radius for your specific product — typically 30–50mm for most neon flex profiles. Forcing a tighter bend will kink the internal PCB and create a dark spot or failure point.
5. Wire the driver end: Strip 8–10mm of insulation from the H07RN-F cable ends. Connect positive and negative to the driver output terminals — red to positive, black/blue to negative. Verify polarity with a multimeter before energising. Connect the driver input to a suitable outdoor switched spur or RCD-protected circuit. If you are not confident with mains wiring, an electrician should complete this stage — the low-voltage neon flex side is safe to handle, but the mains input to the driver is not.
6. Connect the neon flex to the cable run: Use IP68-rated inline connectors or solder the joint and cover with adhesive-lined heat-shrink. Apply heat evenly with the heat gun until the adhesive melts and forms a visible ring of sealant at each end of the shrink tube. This is the most critical step for longevity — water ingress at connection points is the number one cause of outdoor neon flex failure in the UK.
7. Seal the end caps: Fit the silicone end cap supplied with your neon flex. Apply a bead of neutral-cure silicone sealant (never acetic acid cure — it corrodes copper) around the joint between the end cap and the neon flex body. Allow 24 hours to cure before exposing to rain.
8. Test before final fixing: Power on and check the full run for even brightness, correct colour temperature, and any dark spots that would indicate a damaged section. Check driver temperature after 30 minutes of operation — it should be warm but not too hot to touch comfortably.

For accessories including end caps, connectors, and mounting hardware, see the full accessories collection. If you need help sizing your driver, our technical team is available Monday to Friday 9am–5pm on 01952 370028.

Which colour temperature works best for deck lighting?

Warm white at 2700K–3000K is the most popular choice for UK residential decking — it produces a soft amber-toned glow similar to candlelight that complements timber tones and creates a relaxed evening atmosphere. Natural white at 4000K suits contemporary grey composite decking and modern garden designs. Cool white at 5000K–6500K is rarely used on decking outside commercial or hospitality settings because it feels clinical in a garden environment.

• 2700K warm white: The go-to for traditional timber decking, garden entertaining, and residential projects. Flatters natural wood grain and produces the most inviting atmosphere after dark. Approximately 70% of ATOM LED decking orders in 2025 and early 2026 have been warm white.
• 3000K warm white: Very slightly cooler than 2700K — still warm-toned but with marginally better colour rendering. A good middle ground if you want warmth without the deep amber cast.
• 4000K natural white: Clean, neutral tone with no amber or blue bias. Works well with grey composite decking boards, rendered walls, and contemporary garden designs popular in 2026.
• 5000K–6500K cool white: Bright, daylight-equivalent output. Appropriate for commercial terraces, restaurant outdoor dining, and areas where task-level visibility matters more than atmosphere.

All ATOM LED neon flex decking lights deliver CRI90+, which means colours appear accurate and natural under the light. Budget decking lights with CRI below 80 make timber look grey and washed-out — a common complaint in online reviews of cheaper products. CRI is not visible on the spec sheet of most competitors, which usually indicates they are below 80.

How do you prevent voltage drop on long decking perimeters?

The most effective method is to choose 48V neon flex for any run exceeding approximately 15 metres from a single feed point. At 48V, voltage drop occurs at half the rate of 24V for the same wattage and distance. For very long perimeters — 30 metres or more — dual feeding from both ends of the run, or feeding from the centre outward, distributes the load and keeps brightness even from end to end.

Voltage drop is a physics problem, not a product defect. Every LED lighting installation experiences it. The question is whether the drop is visible to the naked eye. On decking, where the entire light line is visible in one glance, even a 10% brightness difference between the start and end of a run is noticeable.

• Use 48V for perimeters over 15m: The higher voltage means lower current for the same wattage, which reduces resistive losses in the conductors. This is the simplest and most reliable solution for 2026 decking projects.
• Dual feed from both ends: Run cable from the driver to both the start and end of the neon flex. This halves the effective distance and dramatically reduces voltage drop. Requires slightly more cable but no additional driver.
• Centre feed outward: Position the feed point at the middle of the run so current travels half the distance in each direction. Particularly effective on U-shaped deck perimeters.
• Upsize the feed cable: Using 2.5mm H07RN-F cable instead of 1.5mm reduces resistance and voltage drop on the cable run between driver and neon flex — important when the driver sits 5 metres or more from the start of the run.
• Parallel wiring for multiple runs: If your deck has several separate edges, wire each run independently back to the driver rather than daisy-chaining in series. Parallel wiring is always best practice — series wiring multiplies voltage drop across every section.

If you are unsure whether your deck layout needs 24V or 48V, email operations@atomled.co.uk with your measurements and we will recommend the most cost-effective setup.

What driver do you need for outdoor decking neon flex?

Your driver must be IP67 rated minimum for outdoor decking installations — an indoor driver exposed to moisture will fail and can be a safety hazard. Size the driver at least 20% above the total wattage of your neon flex run. For example, if your neon flex totals 60W, choose a driver rated 72W or higher. Match the voltage output exactly to your neon flex — a 24V driver for 24V neon flex, a 48V driver for 48V neon flex.

Driver failure is the most common cause of decking light problems reported on UK electrical forums. In the majority of cases, the neon flex itself is fine — the driver has either overheated, been exposed to moisture, or been undersized for the load. Avoid these mistakes:

• Never use an indoor driver outdoors: Even if the driver is sheltered under the deck, humidity and condensation will eventually reach it. IP67 rated drivers are sealed against moisture ingress and cost only marginally more than indoor equivalents.
• Never run a driver at 100% capacity: A driver running at full load generates maximum heat and has the shortest lifespan. The 20% headroom rule is standard practice across the electrical trade — it keeps the driver cool and extends life to 8–10 years in typical UK outdoor conditions.
• Never use a dimmable driver with RGB or RGBW neon flex: RGB and RGBW neon flex requires a non-dimmable constant voltage driver. Dimmable drivers cause flicker, colour shift, and premature failure on multi-channel colour products. Use a dedicated RGB controller between the driver and the neon flex for colour and brightness control.
• Ventilation matters: Even IP67 drivers generate heat. Mount the driver where air can circulate — not sealed inside an airtight box. Under-deck mounting with natural ventilation is ideal. If the driver must go in an enclosure, use a vented IP65 junction box with cable glands.

Browse ATOM LED's full range of LED drivers and transformers for outdoor-rated options in 24V and 48V. Our technical team can confirm the correct driver for your wattage and run length — call 01952 370028.

How do you seal connections to prevent water ingress?

Water ingress at connection points is the number one cause of outdoor neon flex failure in the UK. Every joint between neon flex sections, every feed cable connection, and every end cap must be sealed with either IP68-rated inline connectors, adhesive-lined heat-shrink tubing, or potting compound. Standard electrical tape and non-adhesive heat-shrink are not waterproof and will fail within weeks outdoors.

The neon flex body itself is inherently waterproof — the silicone jacket is continuous and sealed. The vulnerability is where you cut it, connect it, or terminate it. These are the three methods that actually work long-term in UK weather:

• IP68 inline connectors: Pre-moulded waterproof connectors with compression seals. The fastest method — no heat gun needed. Suitable for IP67 and IP68 installations. Available in the strip accessories range.
• Adhesive-lined heat-shrink: Slide the tube over the joint before connecting, then heat with a heat gun until the internal adhesive melts and flows around the connection. You should see a clear ring of adhesive squeeze out at each end — this confirms a complete seal. Use marine-grade adhesive-lined shrink rated to at least IP67.
• Potting compound: For permanent installations where the connection will never need to be reopened, encapsulating the joint in two-part potting resin provides IP68 protection. This is the method used by professional outdoor lighting installers for commercial decking projects.

Two materials that do NOT work outdoors despite being commonly used:

• Standard electrical tape: Adhesive fails in UV and moisture within 2–4 weeks. Never use PVC tape on outdoor lighting joints.
• Non-adhesive heat-shrink: Shrinks around the cable but creates no seal — water wicks along the cable inside the tube by capillary action. It looks waterproof but is not.

Allocate 15–20 minutes per connection for proper sealing. Rushing this step is the single most common cause of decking light failure that our technical support team sees — and it is entirely preventable.

Can you use RGB or RGBW neon flex on decking?

Yes — RGB and RGBW neon flex works well on decking for colour-changing accent lighting, garden parties, and seasonal effects. RGBW is the better choice because it includes a dedicated warm white channel that produces clean, natural white light. Standard RGB cannot produce true white — it generates a cold violet-tinged white that looks unnatural on timber decking. Both require a dedicated RGB controller and a non-dimmable constant voltage driver.

Key considerations for colour-changing decking installations in 2026:

• RGBW over RGB: If you want both colour effects and usable white light, always choose RGBW. The dedicated white LED chip in RGBW neon flex produces warm white at 3000K — the same quality as a single-colour warm white product. RGB's "white" mode mixes red, green, and blue, which produces a cold, bluish-violet tone.
• Controller, not dimmer: RGB and RGBW neon flex must be controlled by a dedicated LED controller, not a standard wall dimmer. Controllers handle the individual colour channels. Brands like MiBoxer, Skydance, and Ltech all offer outdoor-compatible options with smartphone app control.
• Non-dimmable driver mandatory: The controller handles dimming. The driver must supply constant voltage at full output. Using a dimmable driver with an RGB controller causes flicker, colour banding, and premature driver failure.
• Wattage is higher: RGB and RGBW neon flex typically draws more power per metre than single-colour because it contains 3 or 4 LED channels. Size your driver accordingly — calculate total wattage and add 20% headroom.

For addressable colour effects where individual sections change colour independently — useful for creating running light effects along deck edges — see the digital RGB collection paired with a compatible SPI controller.

How does neon flex compare to recessed puck lights and solar decking lights?

Neon flex delivers continuous, even illumination along the full deck edge with a single product and no drilling into deck boards. Recessed puck lights create isolated pools of light with dark gaps between each fitting and require drilled holes that compromise the deck surface. Solar decking lights cost less upfront but produce significantly less light, fail to charge adequately during UK winters, and typically last only 1–2 seasons before battery degradation makes them unreliable.

Solar decking lights serve a purpose for temporary, low-commitment lighting on holiday homes or rental properties. But for a permanent primary deck lighting scheme that needs to work reliably through every UK season, mains-fed neon flex via a low-voltage driver is the professional choice. Forum discussions on electriciansforums.net consistently report that budget puck lights and solar fittings are "a minefield" with most not lasting more than 12–18 months — while properly installed neon flex lasts a decade or more.

What mistakes do people make with decking lights?

The five most common decking lighting mistakes in the UK are: choosing IP65 instead of IP67 minimum, using an indoor-rated driver outdoors, failing to seal connection points properly, powering neon flex while still coiled on the reel, and mounting PVC-jacketed strip directly onto treated timber where the preservative chemicals degrade the jacket within months. All five are preventable with the right product choice and installation method.

1. Buying IP65 for exposed decking: IP65 is splash-proof only. It is not designed to survive sustained rain, standing water, frost heave, or the condensation cycles that occur on UK decking from autumn through spring. This single mistake accounts for the majority of "my decking lights failed" complaints on UK DIY forums.
2. Indoor driver placed under the deck: The space under a deck is not dry — it experiences high humidity, condensation, and occasional standing water. An IP20 or IP44 indoor driver placed here will typically fail within 6–12 months. Use IP67 rated drivers for all outdoor decking installations.
3. Unsealed or poorly sealed connections: Standard electrical tape is not waterproof. Non-adhesive heat-shrink is not waterproof. Every outdoor connection must use IP68 connectors, adhesive-lined heat-shrink, or potting compound. Water ingress at joints is the number one field failure our support team encounters.
4. Powering neon flex while coiled: Never test or run neon flex while it is wound on the delivery reel. Heat cannot dissipate from the inner layers, the adhesive backing softens, and in extreme cases the accumulated heat creates a fire risk. Always uncoil fully before powering on.
5. PVC strip on treated timber: Modern pressure-treated decking timber uses copper-based preservatives (tanalith, tanilith E) that chemically react with PVC strip jacket material, causing it to harden, crack, and delaminate within 3–6 months. Silicone-jacketed neon flex does not react with timber treatment chemicals — this is one of the technical reasons silicone is the correct material for decking applications.

Two additional mistakes worth noting:

• Mounting neon flex on bare metal without insulation: If you fix neon flex to an aluminium profile or metal bracket, the profile must be anodised or powder-coated. Bare aluminium can cause short circuits if the neon flex jacket is ever nicked or damaged during installation. Use the purpose-designed neon flex profiles from ATOM LED, which are anodised as standard.
• Using a dimmable driver with RGB neon flex: This causes flicker, colour shift, and can damage the controller. RGB and RGBW always need a non-dimmable constant voltage driver with a separate controller handling colour and dimming functions.

Why choose ATOM LED for your decking lighting project?

ATOM LED is a UK LED specialist based in Telford, Shropshire, with physical stock held in our UK warehouse — not dropshipped from overseas. Every neon flex product carries a 5-year warranty, ships with free UK delivery, and is backed by a technical support team available Monday to Friday 9am–5pm. We do not sell IP65 for outdoor use because we know it fails — every decking product in this collection is IP67 or IP68 minimum.

• FreeCut technology: Cut at any point along the neon flex without voiding your warranty — essential for decking where exact lengths matter and every deck is a different size.
• Genuine IP67 and IP68 ratings: Full silicone encapsulation tested to standard — not a marketing claim on a product that is actually IP65 with an optimistic label.
• CRI90+ on all COB neon flex: Your timber decking actually looks like timber under our lights, not a grey washed-out version of itself.
• 24V and 48V options: Most competitors sell 12V or 24V only. ATOM LED offers 48V neon flex for the long perimeter runs that real decking projects require — up to 50m from a dual feed on 48V.
• UK-based technical support: Call 01952 370028 and speak to someone who understands LED lighting, voltage drop, driver sizing, and IP ratings. We help you specify the right product before you buy — not just process an order.
• 5-year warranty: Covers the neon flex against manufacturing defects under normal outdoor use. We stand behind the product because we know the quality of the silicone and LED components we supply.
• Free UK delivery: Every order, every product, no minimum spend. Your decking project delivered to site at no additional cost.

ATOM LED supplies landscapers, electricians, garden designers, and homeowners across the UK. If you need help choosing the right neon flex, driver, and accessories for your specific decking layout, email operations@atomled.co.uk or call 01952 370028 with your deck measurements and we will put together a recommendation within one working day.

Browse related collections:

• Full neon flex range — all IP ratings and profiles
• Silicone neon flex body and cover options
• LED drivers and transformers
• Neon flex mounting profiles and channels
• LED controllers for RGB and smart dimming

Frequently asked questions about LED neon flex decking lights

These are the questions our technical team answers most frequently about decking lighting — drawn from customer calls, UK trade forums, and the issues we see in the field. Every answer reflects real-world installation experience on UK decking projects in 2025 and 2026.

1. Is IP65 good enough for decking lights in the UK?

• No. IP65 is rated for low-pressure water jets only — it is not designed for sustained rain exposure, standing water, or the freeze-thaw condensation cycles that UK decking experiences from autumn through spring.
• Typical failure timeline: IP65 strip or neon flex on exposed UK decking typically shows condensation inside the jacket within 3–6 months and fails within 6–12 months.
• Minimum recommendation: IP67 for wall-mounted or fascia-mounted decking lights. IP68 for ground-level or recessed installations where water may pool.

2. Can I cut neon flex to fit my deck exactly?

• Yes. ATOM LED neon flex features marked cut points at regular intervals — typically every 25–50mm depending on the product.
• FreeCut technology: Cut at any marked point without voiding the 5-year warranty.
• Important: Always use sharp scissors or side cutters for a clean perpendicular cut. A ragged cut prevents the end cap from sealing properly, which compromises waterproofing.

3. How long can I run neon flex from one feed point?

• 24V neon flex: Up to 20 metres maximum from a single feed, with visible brightness consistency typically maintained to approximately 10–15 metres depending on wattage per metre.
• 48V neon flex: Up to 50 metres from a dual feed, or approximately 20–30 metres from a single feed with consistent brightness.
• For perimeters exceeding 15m: Choose 48V or dual-feed 24V from both ends to prevent visible voltage drop.

4. Do I need an electrician to install decking neon flex?

• The low-voltage side is DIY-safe: Cutting, mounting, and connecting 24V or 48V neon flex does not require a qualified electrician. Both voltages fall within the SELV threshold under BS7671 when supplied from a suitably isolated driver.
• The mains side requires care: Connecting the driver to your 240V mains supply should be done by a competent person or qualified electrician, particularly if a new outdoor circuit or RCD protection is needed.
• Best practice: If in doubt, ask a local electrician to install the driver and mains connection, then complete the neon flex mounting and low-voltage wiring yourself.

5. What size driver do I need for my decking lights?

• Calculate total wattage: Multiply the wattage per metre of your neon flex by the total length in metres. Example: 10W/m neon flex across 8 metres = 80W total.
• Add 20% headroom: 80W total requires a driver rated at minimum 96W. Round up to the next available size — typically 100W or 120W.
• Match voltage exactly: A 24V driver for 24V neon flex, a 48V driver for 48V neon flex. Never mix voltages.
• IP67 minimum for outdoor: Browse ATOM LED's LED power supplies for outdoor-rated options.

6. Will LED neon flex damage my composite or timber decking?

• Silicone-jacketed neon flex: No — silicone is chemically inert and does not react with timber preservatives, composite materials, or surface treatments.
• PVC-jacketed strip: Yes, this can be a problem on pressure-treated timber. Copper-based preservatives in tanalised wood react with PVC, causing the jacket to harden, crack, and delaminate within months.
• Recommendation: Always choose silicone-jacketed neon flex for decking applications. All ATOM LED outdoor neon flex uses silicone construction.

7. Can I dim neon flex decking lights?

• Single-colour neon flex: Yes — use a TRIAC dimmable driver with a trailing-edge dimmer switch. Trailing-edge dimmers are compatible with most LED drivers. Leading-edge dimmers frequently cause flicker — the trailing-edge fix costs approximately £15.
• RGB/RGBW neon flex: Dimming is handled by the RGB controller, not the driver. The driver must be non-dimmable constant voltage. The controller adjusts brightness and colour independently.

8. How long do LED neon flex decking lights last?

• LED lifespan: 50,000+ hours to L70 (the point where brightness has reduced to 70% of original output).
• Practical lifespan on decking: At 4 hours per evening average, 50,000 hours equates to approximately 34 years. In practice, the silicone jacket and driver are more likely to determine replacement timing than the LEDs themselves.
• Driver lifespan: A quality IP67 driver operated at 80% load typically lasts 8–12 years in UK outdoor conditions.

9. What happens if a section of neon flex fails?

• Localised failure: If one section goes dark, the rest of the run continues to work — neon flex operates in parallel internally, not series. The dark section can be cut out and a new piece spliced in using IP68 connectors.
• Full run failure: If the entire run goes dark simultaneously, the cause is almost always the driver, not the neon flex. Check driver output voltage with a multimeter. Most driver failures are replaceable without touching the neon flex installation.
• Warranty: ATOM LED neon flex carries a 5-year warranty against manufacturing defects under normal outdoor use conditions.

10. Can I use neon flex on decking steps for safety lighting?

• Yes — this is one of the most effective applications. A continuous line of light along the nose of each step makes the edge clearly visible in darkness, reducing trip and fall risk significantly.
• Mounting method: Fix the neon flex to the vertical riser face of each step, positioned just below the nosing. This throws light downward onto the tread below without creating direct glare when standing on the step above.
• Building regulations note: While domestic decking steps do not typically require illumination under UK building regulations, providing step lighting is strongly recommended by landscape design bodies and insurance providers for liability reduction.

11. What cable should I use between the driver and neon flex?

• Outdoor-rated cable: H07RN-F 2-core rubber-sheathed cable — this is the standard for outdoor low-voltage lighting runs in the UK.
• Minimum size: 1.5mm for runs under 10 metres from driver to neon flex. 2.5mm for runs of 10–20 metres to reduce voltage drop in the cable itself.
• Never use indoor-rated cable outdoors: Standard twin-and-earth or bell wire is not UV-stable and the insulation degrades in direct sunlight within 12–18 months.

12. Is 12V neon flex suitable for decking?

• Not recommended for most decking projects. 12V neon flex has the highest voltage drop rate of any option — visible dimming can begin at just 3–5 metres from the feed point.
• Limited run lengths: Maximum practical run is approximately 5 metres, which is shorter than most deck edges.
• When 12V makes sense: Only for very short accent runs of 1–3 metres where you already have a 12V supply from an existing garden lighting transformer.

13. Can neon flex handle jet washing?

• IP67: Yes — IP67 is rated to withstand temporary immersion to 1 metre depth. Standard domestic pressure washers operating at normal distance (300mm+) are well within the IP67 rating.
• IP68: Yes — handles continuous submersion, so pressure washing is not a concern.
• Precaution: Avoid directing a concentrated jet at connection points or end caps for prolonged periods. The neon flex body will handle it easily, but sustained high-pressure water directly at a sealed joint is best avoided.

14. How do I calculate how much neon flex I need for my deck?

• Measure all edges you want to light: Use a tape measure along the deck fascia, step risers, or railing undersides. Measure in millimetres for accuracy.
• Add 100mm per end: Allow 100mm extra at each end for end caps and connection tails.
• Add 5% for corners: If your deck has corners or curves, add approximately 5% to the total for the slight extra length consumed by bending.
• Round up to the next full metre: Neon flex is sold by the metre. Always round up — excess can be cut off cleanly.
• Example: A rectangular deck measuring 4m x 3m with lighting on three edges = 4 + 3 + 4 = 11 metres. Add connections and corners: approximately 11.8m. Order 12 metres.

15. Do ATOM LED neon flex decking lights come with a warranty?

• 5-year warranty: All ATOM LED COB DC voltage neon flex carries a 5-year warranty against manufacturing defects.
• What is covered: LED failure, colour shift beyond specification, silicone jacket delamination under normal outdoor conditions.
• What is not covered: Physical damage from impact, incorrect installation (e.g., powering while coiled), use of incompatible drivers, or modifications to the product.
• How to claim: Contact operations@atomled.co.uk or call 01952 370028 with your order number and a description of the fault. Our team will assess and arrange replacement if the product is within warranty terms.

16. When is the best time to install decking lights in the UK?

• Spring (March–May) is ideal: Dry conditions for installation, long enough daylight for working, and the lights are ready for summer evening use. Spring 2026 is peak season for decking lighting projects.
• Autumn installation works too: September and October offer mild, dry conditions. Installing before winter means your deck is lit for the dark evenings from November onward.
• Avoid installing in rain or frost: Silicone sealant on end caps and connections requires 24 hours of dry conditions to cure fully. Installing during wet weather compromises the seal quality.

Related Collections

• full LED neon flex range
• IP68-rated neon flex
• IP67 neon flex
• outdoor neon flex collection
• neon flex recessing profiles
• outdoor-rated LED power supplies
• outdoor decking LED light fittings
• wireless dimming controllers
• LED installation guide with outdoor wiring section

Last reviewed: March 2026 — ATOM LED technical team, Telford, Shropshire. Specifications current as of 2026.

🏭 UK LED specialist, Telford, Shropshire  ·  ☎️ 01952 370028  ·  🚚 Free UK delivery