In this guide: Where it fits · Tape fundamentals · Colour options · IP ratings · Drivers and control · Architectural fixtures · Colour quality · Heat and lifespan · Installation · Electrical work · Commissioning · Common mistakes · Popular picks · FAQ

Where architectural lighting fits in a venue

A moving head or an LED par is a performance tool: bright, aimed at people, rigged for a show. Architectural lighting is the light that is simply there. It runs every trading hour, nobody operates it, and it has to make the room read the way the venue wants. It goes wherever light comes from the building, not from a rig:

• Coves and ceiling perimeters. Tape washing the ceiling lifts a low room and sets the mood from one channel.
• Bar fronts, back bars and under-counter details. Colour quality matters most here.
• Stairs, signage, feature walls and alcoves. Riser lighting doubles as wayfinding, and grazing light across a texture makes a material look expensive.
• Facades and entrances. Uplighting brickwork; marking the door from the street.

Most venues run both, often sharing a control network. For the performance end see our guide to LED battens, pars and uplighters; for a fit-out’s sound side, commercial background audio.

LED tape fundamentals

LED tape is a flexible printed circuit with surface-mount LEDs at fixed spacing, an adhesive backing and a fixed low-voltage DC requirement. It is a constant-voltage product: feed it stable 12V or 24V DC and its on-board resistors handle the current. That is why it runs from a fixed-voltage supply, not a constant-current driver.

12V against 24V

Both work; the difference is current. For the same wattage a 12V run draws twice the current: the Visio TRI-RGB60 IP65 tape is specified at 14.4W per metre on 24V, or 0.6A per metre, and 1.2A at 12V. Losses in the copper rise with the square of the current, so doubling it gives four times the heating loss, off a smaller starting voltage. The symptom is a run correct at the feed end and dim or colour-skewed at the far end. Use 24V beyond a short accent.

LEDs per metre and whether you see dots

Density drives how even the line looks and how close the tape can sit to a diffuser before emitters read as dots. A 60 per metre tape puts an LED roughly every 16mm; 30 per metre doubles that gap. The Visio TRI-RGB60 carries 300 LEDs over 5 metres; the FLS-RGB carries 150. Low density suits a deep cove bouncing off a ceiling; go high behind a shallow diffuser or grazing a textured wall.

Watts per metre and sizing the power supply

Every tape publishes watts per metre. Multiply by total metres, then add headroom:

The headroom is not optional: a supply run permanently at its rated output runs hot, and heat kills switch-mode supplies. Twenty to 30 per cent spare buys longer life and room to extend, so 20 metres of this tape belongs on a 320W supply, not one sized exactly to 288W.

Maximum run length and cut points

Voltage drop along the tape limits how far you can go from one feed point. Every reputable tape publishes a maximum single-feed run length, set by its copper thickness, density and wattage: follow the figure for the tape you bought. When the run is longer, either feed from both ends, which roughly halves the current in each half, or split the length into sections inside the maximum and home-run power to each. This limits the tape, not the driver: splitting a 30 metre cove into three sections from one supply is normal.

Tape cuts only at marked intervals, because the LEDs sit in series groups sharing a resistor: the TRI-RGB60 IP20 bulk roll cuts every 50mm, the FLS-RGB every five LEDs at 167mm.

Single colour, RGB, RGBW, tunable white and pixel tape

The colour architecture sets the control system, core count and most of the cost, so decide it first.

Be careful with pixel tape: proprietary protocols, strict data cable limits, more failure modes, and a controller somebody must reprogram in two years. If the brief is “the cove should go blue for a wedding”, RGBW and a scene controller will still work long after the installer has gone.

IP ratings: splash resistance is not immersion

IP ratings come from IEC 60529: first digit dust, second digit water. The second gets misread, because it is not a ladder of “more waterproof” but a set of specific tests.

The IP54 to IP65 gap catches people. The resin-coated Visio TRI-RGB60 is IP54: good against splashes and dust, not weatherproof. Exposed positions want a fully jacketed tape such as the IP65 silicone-jacketed version, in a profile that drains, not a channel that fills.

Drivers and control

There are two boxes in a tape system. The power supply converts mains to stable 12V or 24V DC. The driver or decoder sits between supply and tape and handles dimming and colour mixing, usually by pulse-width modulation per channel. Installation kit separates them, so each can be sized and sited independently.

Mean Well’s HLG series is the workhorse supply: the HLG-320H-24A is 320W at 24V and IP65, with a 90 to 305V AC input, efficiency up to 94 per cent and fanless operation, so it suits damp and outdoor positions. For a cabinet, the low-profile RSP-150-24 stacks neatly in 1U.

DMX decoders

A DMX decoder converts DMX512 from a desk, node or architectural controller into PWM output per channel: three for RGB, four for RGBW. Use one where the venue has lighting control already, or the tape must sit in the stage rig’s cue stack. The Flexoled FTP3 and FTP4 are typical, taking 12 to 24V DC with dipswitch programs and manual dimming as well as DMX. Larger installs save cabling with a zoned driver: the TD400 drives 400W of 24V RGB or RGBW tape across four addressable zones. See our DMX guide for addressing.

DALI, 0-10V and standalone control

DALI (Digital Addressable Lighting Interface) is specified in the IEC 62386 series, with DALI-2 the current certification programme from the DALI Alliance. It is digital, bidirectional and individually addressable, and was the successor to analogue 0-10V control, so where the general lighting is on DALI a DALI decoder gives you one control system instead of two. 0-10V is the older approach: a varying control voltage on a separate pair, no addressing, still everywhere in existing buildings.

Plenty of venues need no network: a standalone controller with a few stored scenes and a wall plate does everything a bar needs. For retrofits, wireless DMX often makes a job viable, since getting control cable to a facade uplight or across a listed interior can be the dearest line on the quote. On networked installs, Art-Net and sACN nodes distribute universes over existing structured cabling.

Architectural fixtures beyond tape

Tape does lines of light; everything else needs a dedicated fixture, and most schemes mix both.

• Wall washers cover a flat surface evenly from a distance. Linear bars and grazers are rigid IP-rated fixtures at the base of a wall or head of a facade, with more output and beam control.
• Uplights and feature spots handle columns, trees, signage and details. LEDJ’s Aspect Exterior range is an example, in 3W and 9W single colours and whites; for event uplighting see our uplighters.
• IP-rated exterior units need materials suited to the site, not just the right rating: coastal and pool environments are harsher than the number suggests.
• Pixel-mapped installs drive tubes and bars as a low-resolution display: a project needing a maintenance plan.

Colour quality: what cheap tape gets wrong

In a venue, light lands on food, drink, skin and materials, which makes colour quality commercial rather than technical. CRI (Ra) scores how faithfully a source renders reference samples on a scale to 100, but it averages eight pastel samples, so a source can score well while rendering deep reds poorly. Hence the interest in R9, the saturated red sample, and in ANSI/IES TM-30-20, which evaluates 99 samples and reports fidelity (Rf) and gamut (Rg) separately. Where white light falls on people or food, specify high-CRI tape and check a figure is published at all.

White point, binning and batch drift

LEDs leave the line with variation in output colour, so manufacturers sort them by measured chromaticity: binning. How tightly a product is binned is expressed in SDCM steps (standard deviation of colour matching), or MacAdam steps. One step is invisible and two or three are barely noticeable, but at the seven-step quadrangles ANSI C78.377 uses for nominal colour temperatures, two samples sold as the same white are plainly different side by side.

That is why cheap tape drifts between reels: a factory publishing no SDCM figure can put two reels of nominally identical 3000K white in one cove with a visible step where they meet. Buy tape that publishes a binning tolerance, buy the job in one order plus a spare, and where you cannot guarantee a match, break the line at a corner or shadow gap.

Heat and lifespan

LEDs rarely fail suddenly; they fade, and the rate depends heavily on temperature. IES LM-80 sets the test method for lumen depreciation of LED packages over at least 6,000 hours at defined case temperatures, and IES TM-21 projects life beyond that. Hence L70, where output has fallen to 70 per cent of original, and L80. Tape has almost no thermal mass, so a strip on plasterboard or in airless joinery has nowhere to send its heat: junction temperature climbs and a headline 50,000 hour figure delivers a fraction of it.

• Aluminium profile is a heatsink, not a trim. It is the biggest single thing you can do for lifespan, and works better screwed to masonry or metal than floating in a void.
• Diffusers cost output, so allow for it in the wattage. Coated tape trades cooling for protection, which makes profile mounting matter more, not less.
• Do not enclose the power supply. Switch-mode supplies are the next thing to die from heat.

Installation practicalities

Profiles, cutting and joining

Aluminium extrusion comes in surface-mount, recessed, plaster-in, corner and handrail formats with clip-in clear, frosted and opal diffusers. Choose it early: it sets the tape width, the emitter-to-diffuser depth (and therefore the density) and the fixing method. Bare IP20 tape lives in profile.

Cut only on the marked lines, square, with a sharp blade. Solderless clip connectors clamp onto the pads and are quick, in strip-to-strip and wire-to-strip forms plus an applicator tool. Soldered joints last better, because a clip is a mechanical contact that can loosen, oxidise and go intermittent. Use clips where the joint stays accessible, solder anything buried, sealed or high up. Wire in matching multicore: 2 core single colour, 4 RGB, 5 RGBW.

Surface preparation, cable routing and access

The self-adhesive backing is a positioning aid, not a permanent fixing. It fails over time, fastest where the tape runs warm, the surface is dusty, rough or chalky, or the run is overhead. Degrease with isopropyl alcohol, let it dry, and press the whole length down. For anything overhead, outdoors or permanent, use mechanically fixed profile and let the adhesive hold the tape in the channel.

Voltage drop happens on the DC side, so keep the low-voltage run short: the supply belongs near the tape with a long mains run behind it, not in a plant room with a long DC run in front. Where that is unavoidable, increase the DC cable cross-section; our power distribution guide covers the mains side. Then make the driver accessible: ventilated, labelled and reachable. That is the difference between a ten-minute swap and cutting into joinery.

Electrical work is a job for a qualified electrician

On a venue job the split is clean: the electrician provides the mains supply, containment, fused connection and certification; the lighting supplier provides and configures supplies, drivers, tape and control. Agree it in writing first.

Commissioning and scenes

The install is finished when the people who work there can use it, not when it lights.

1. Record the addressing, and leave a copy in the cupboard.
2. Check evenness with fresh eyes. A dim far end is voltage drop, a step at a joint is binning, dots through a diffuser mean density or depth.
3. Build scenes around the trading day: daytime, evening, late, private event, clean-down. Five presets staff will use beat forty they will not.
4. Set fade times and dim limits. A slow crossfade between day parts is invisible; a snap is not.
5. Lock the wall panel to the scenes and keep engineering menus behind a code.

Common mistakes

• 12V tape on a long run. Twice the current, four times the loss, dim far end.
• No headroom on the power supply. Sized exactly to the load, it runs hot and dies early.
• No heatsink profile. Tape on plasterboard or in airless joinery fades far faster than its datasheet says.
• Mixing reels from different batches. Loosely binned white steps where reels meet.
• No access to the driver. Supplies behind fixed panels turn a swap into joinery.
• Adhesive-only mounting on a dusty surface. Clean, degrease, fix the profile mechanically.
• Indoor tape used outdoors. IP54 is splash resistance, not weatherproofing.
• RGB where white is the main state. Buy RGBW instead.

Popular picks from the shop

Frequently asked questions

Should I use 12V or 24V LED tape?

Use 24V for almost everything in a venue. For the same wattage per metre it draws half the current, and losses rise with the square of current, so it drops far less voltage.

How do I size the power supply for LED tape?

Multiply the published watts per metre by total metres, then specify a supply 20 to 30 per cent above. Ten metres of 14.4W/m tape is 144W, so a 200W supply, not a 150W one.

What IP rating do I need for outdoor LED tape?

IP65 as a minimum for rain, IP67 where the position could flood or pond. IP54 is splash and dust resistance for damp interiors, not weatherproofing. Seal cut ends and cable entries, and use a rated enclosure for the supply.

What is the difference between RGB and RGBW tape?

RGB mixes white from red, green and blue emitters, and that mixed white is thin and unflattering on skin, food and drink. RGBW adds a dedicated white emitter on a fourth channel: a usable white for trading hours, plus colour on demand.

Can I control LED tape from my lighting desk?

Yes, with a DMX decoder between the supply and the tape: three channels for RGB, four for RGBW. Many also run standalone with built-in programs. If the general lighting is on DALI, a DALI decoder keeps everything on one system.

Can I install LED tape myself?

You can plan the layout, choose tape and profile, and work on the extra-low-voltage side. Connecting supplies to fixed wiring, altering circuits and certifying the work must be done by a qualified electrician to BS 7671.