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    Signage · Barcelona

    Dimensional
    letters

    Laser cutting in steel, aluminium, acrylic, PVC and brass. We manufacture piece by piece at our workshop in Cabrera de Mar.

    • Full-scale mounting template for exact positioning
    • Fixing calculated for your wall surface
    • Bespoke finishes: polished, satin, RAL powder-coated

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    We reply the same working day.

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    Our work

    Letters already
    on a facade

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    What built-up letters are

    What built-up letters are and when they pay off

    Built-up letters are three-dimensional letters, made one by one and fixed to a façade, a reception wall or a plate. Unlike vinyl or a printed panel, each letter has its own depth and edge, so the brand casts a shadow, changes with daylight and reads in relief. They are made in stainless steel, lacquered aluminium, acrylic, PVC or brass, and can sit flush on the wall, stand off on studs or carry LED lighting.

    They pay off when the image has to look solid and last for years: office and warehouse façades, hotels, clinics, corporate receptions or high-end shops. If what you need is a quick change or a campaign with an end date, vinyl or a panel is usually more sensible, and we will tell you so.

    Here we focus on the letter's material, finish and installation. If it has to read at night, the lighting systems (halo-lit, face-lit or LED neon) are covered in illuminated signs. For the rest of the façade and the shop window see commercial signage, and every option in Unical's signage services.

    Materials

    The material changes
    the whole result

    Dimensional letters are always the same idea, individual pieces fixed to the wall, but the material decides the price, the finish, the minimum thickness and how many years they withstand outdoors. These are the five families we cut.

    Sample 03 / 06

    Acrylic

    Solid colours, translucency and the option to backlight the letter from within. Widely used indoors, in reception areas and spaces looking for a clean, flat colour. It's cut with a flame-polished edge, which leaves a characteristic shine.

    Request a quote →
    Materials and finishes

    Finishes, fixings
    and workshop detail

    With dimensional letters, the difference between a good job and a mediocre one isn't in the cutting, which anyone can do today, but in the edge finish, the fixing and the setting-out.

    Loading 3D scene
    Workshop detail01 / 06

    Laser for metal sheet and routing for thicker materials. The minimum stroke thickness depends on the material and the typeface: at the site visit we check your logo is manufacturable before committing to anything.

    LocationWorkshop

    How we work

    From vector file
    to letter on the wall

    1. Step 01

      File and wall review

      We check the logo can be manufactured in the chosen material and measure the surface where the letters will be fixed, which determines the fixing system.

    2. Step 02

      Prototype and finish sample

      If the project warrants it, we make a sample letter with the final finish. Seeing it in hand avoids surprises with the sheen, colour and edge.

    3. Step 03

      Cutting and finishing in the workshop

      Laser cutting or routing, folding where there's an edge, welding, edge polishing and coating. Every piece goes through inspection before being numbered and packed.

    4. Step 04

      Setting-out and installation

      We position the template, drill, fix piece by piece and check alignment and plumb with a laser level before removing the template.

    01 / 04
    Comparison

    Which letter material to choose

    The five materials solve different things. This is the quick comparison we go through before bringing physical samples to the site visit.

    MaterialBest forOutdoorsLookRelative cost
    Stainless steelCorporate façades, hotels, officesYes, maintenance-freeBrushed or mirrorHigh
    Lacquered aluminiumLarge façades, warehouses, brand coloursYesAny RAL colourMedium
    AcrylicReceptions, interiors, lit lettersYes, with a protected edgeGloss, can be lit from insideMedium
    Foam PVCInteriors, events, tight budgetsSheltered onlyMatt and lightLow
    Brass and bronzeHotels, offices, classic brandsYes, lacquered or patinatedWarm, ages over timeHighest

    Outdoors, what fails most is not the letter but a fixing that does not suit the wall.

    Send us your logo and a photo of the wall and we will recommend a material →
    Prices

    How much built-up letters cost

    We do not publish fixed rates because the price depends as much on the letters as on the wall they go on. We quote the whole job: manufacture, finish, installation and, if needed, lighting. These are the factors that move the figure:

    • Size and number of letters

      Letter height and the number of pieces set the material used and the cutting hours.

    • Material and depth

      Stainless, aluminium, acrylic, PVC or brass, and the edge you want seen from the street.

    • Finish

      Brushed, mirror, RAL lacquer or patina change the workshop hours per piece.

    • Lighting

      Unlit, halo-lit or face-lit: the LEDs, power supply and wiring add up.

    • Wall type and fixing

      Concrete, brick, composite or glass each need different fixings and standoffs.

    • Access and equipment

      Installation height and whether a lift platform or a street-occupation permit is needed.

    • Permits

      On listed façades or in old town centres the council may ask for a photomontage and a report.

    Get a quote for your letters →

    Google reviews

    What our clients say

    5,044 reviews on Google

    • 5/5

      Confiamos en Unical para rotular todo un edificio y fue todo un éxito. Muy buenos profesionales con un trato excelente. Experiencia de 10.

      Gerard Duran egeaGoogle · Original review in Spanish

    • 5/5

      Los mejores profesionales del sector. Siempre que pedimos algo, lo hacen a la perfeccion y encima super eficientes. Tienen mucha vista y el asesoramiento es muy bueno. Sitio de confianza.

      Pere Company RoigGoogle · Original review in Spanish

    • 5/5

      Profesionales con Mayúsculas! Muy contento por haber dado con ellos. El resultado es justo lo que buscaba, y con un tiempo de respuesta increíble.

      GabrielGoogle · Original review in Spanish

    See all reviews on Google →
    Frequently asked questions

    We answer your questions

    Everything people ask us before commissioning dimensional letters: timelines, licences, materials, installation and warranty.

    Can't find your question?

    Ask us directly
    Which material suits the facade of my business?
    It depends on three things: where they'll go, what budget you're working with and what you want to convey. For exposed exteriors and a sense of permanence, stainless steel: it doesn't rust, needs no maintenance and lasts decades, though it's the most expensive material. If you need a specific brand colour, powder-coated aluminium is considerably cheaper, comes in any RAL shade and holds up perfectly outdoors. For indoor use with a flat colour, or if you want to backlight the letter, acrylic. For indoor use on a tight budget or temporary signage, expanded PVC. And brass or bronze when the project calls for a classic character. At the site visit we bring physical samples: seeing and touching the real finish settles in two minutes what a catalogue takes weeks to decide.
    Can my logo be made as dimensional letters?
    Almost always yes, but it needs checking first. The typical problem is very thin strokes and small details: on a typeface with narrow serifs, that serif can end up below the minimum thickness the material can hold, and if it's made anyway it ends up bending or breaking during installation. Open outlines and loose pieces, like the dot on an "i", also need attention, since they need their own fixing. What we do is review your vector file before quoting and, if something isn't viable, suggest a minimal tweak that respects the identity. If you only have the logo as an image, we'll vectorise it for you.
    How are they fixed to the wall, and is the fixing visible?
    The fixing is never visible. The system depends on the wall surface: on brick or concrete we use screws with wall plugs and concealed spacers; on composite panel or sandwich board, threaded studs on the back of the letter; on glass, structural adhesive or through-spacers; and on listed stone, when drilling isn't possible, a concealed bracket or specific adhesives. If the letter stands off the wall, the spacers sit behind it and what you see is the letter floating with its own shadow. Before drilling, we position a full-scale template with the location of every piece and every fixing point.
    How thick are the letters, and is it noticeable from the street?
    The usual thickness on a facade is 20 to 60 mm, though we can manufacture anywhere from 3 mm flat sheet to over 100 mm for special pieces. The practical rule is that the further away the sign will be seen and the higher up the letter sits, the more thickness it needs to keep its presence. Another feature that adds a lot is standing the letter off the wall by two to five centimetres: it gains its own shadow, and from the pavement it reads as far more three-dimensional than it actually is, without raising the cost of the material.
    Can the letters be illuminated?
    Yes, in three different ways. Backlit, with LEDs behind projecting a halo against the facade: the letter stays opaque and sharply outlined, the most elegant finish. Front-lit, with the letter's face translucent and light coming forward, which reads best from a distance. And with external lighting via spotlights or wall washers, which doesn't touch the letter and works when there's no electrical supply at the sign's location. If you're planning to light it, say so from the start: it changes the fixing system, the letter's depth, and cable routing needs to be planned in.
    What maintenance do they need?
    Very little. Stainless steel, powder-coated aluminium and acrylic just need water and mild soap a couple of times a year, avoiding scourers and abrasive products that scratch the finish. For stainless steel outdoors near the sea, a cloth with a specific product once a year helps prevent salt pitting. Unlacquered brass evolves over time and gains a patina; if you'd rather it kept its original shine, it needs to be lacquered during manufacturing or polished periodically. Outdoor PVC is the only material that may need repainting in the medium term.
    How long does it take from design approval?
    Between two and four weeks depending on the material and number of pieces. Hand-polished stainless steel takes the most workshop time, since the finish is done by hand piece by piece. Powder-coated aluminium depends on the oven-coating cycle. PVC and acrylic are the fastest. If the project includes a sample letter beforehand, add a few days, but for expensive pieces or unusual finishes it's usually worth it.
    Can you install on protected facades or in historic centres?
    Yes, and it's a fairly common situation in and around Barcelona. Listed buildings often have restrictions on materials, colours, size and even the fixing system, and sometimes the original wall surface simply can't be drilled. In those cases we work with reversible fixings, concealed brackets on non-protected elements, or structural adhesives. We prepare the heritage-related documentation ourselves, and it's worth budgeting extra time, since the approval process takes longer than for a standard licence.
    What's the minimum number of letters you'll make? Can single pieces be ordered?
    There's no minimum. We manufacture from a single piece, though the unit cost drops considerably once you order a full sign, since much of the work is file preparation and machine set-up. If in future you need a replacement letter because someone knocked one off, we keep the file and the material specification and can remake exactly the same piece years later.
    What's the difference from a tray sign?
    A tray sign is a continuous box that covers the whole face of the sign and hides what's behind it; it's cheaper, works well on wide or poor-condition facades, and lets you change the graphics without touching the structure. Dimensional letters are individual pieces fixed directly to the wall, giving more relief and a more solid, considered brand feel, especially with indirect backlighting, but they leave the facade on show, so the wall surface needs to be presentable, and changing the name means manufacturing new letters. If you're set on dimensional letters, the specific page for the commercial signage project shows how the two fit together.

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    No-obligation site visit anywhere in Catalonia. Physical material and finish samples if you need them.

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