What Is Luminous Paint

luminous paint, paint that glows in the dark because it contains a phosphor, a substance that emits light for a certain length of time after exposure to an energy source, such as ultraviolet radiation. Zinc sulfide and calcium sulfide are such phosphors.

Some luminous paints contain a source of radiant energy, such as salts of radium. These paints glow indefinitely and are used for painting dials and signs to be read at night.

Advantage of Luminous Paint

Enhanced Visibility

Luminous paint glows in the dark, providing visibility in low-light or nighttime conditions. This makes it useful for marking pathways, exits, and safety features.

Safety Improvements

It can improve safety by highlighting emergency routes, stairways, and hazard areas in dark environments, helping prevent accidents and guiding people during power outages.

Energy Efficiency

Unlike traditional lighting, luminous paint doesn't require electrical power to glow. This makes it an energy-efficient solution for marking and decorative purposes.

Increased Visibility and Identification

Emergency exits, escape routes, staircases, and handrails can be marked with luminous paint to help people navigate safely in the dark.

Cost-Effective

Over time, luminous paint can be more cost-effective compared to traditional lighting solutions, especially in applications where constant illumination is not required.

Types of Luminous Paint

Visible fluorescent paint

Visible fluorescent paint also has ordinary visible light pigments, so under white light it appears a particular color, and the color just appears enhanced brilliantly under black lights. Invisible fluorescent paints appear transparent or pale under daytime lighting, but will glow under UV light.

Invisible fluorescent paints

Invisible fluorescent paints produce a high-quality fluorescent effect that is invisible in normal daylight. However, under UV light, they burst from the darkness into dazzling fluorescent colors. They can be applied by brush, roller or spray to many different surfaces such as fabric or wood.

Luminous Paint Color

Fluorescent Paint
Available in a wide range of colors, including green, blue, orange, pink, and more1.Glows when exposed to short-wave ultraviolet (UV) radiation (commonly used in theatrical lighting and effects)1.

Phosphorescent Paint (Glow-in-the-Dark)
Typically glows in a pale green to greenish-blue color.Made from phosphors like silver-activated zinc sulfide or doped strontium aluminate.Emits visible light long after exposure to light (up to 12 hours), fading gradually1.

Swiss Super-LumiNova® Luminous Pigments

BL (Blue Line, emission at 485 nm)
GL (Green Line, emission at 515 nm)
VL (Violet Line, emission at 440 nm)
WL (White Line, complete white emission)
YL (Yellow Line, yellow emission)
OL (Orange Line, orange emission)
PL (Pink Line, pink emission)
UL (Ultramarine Line, ultramarine blue emission).

Outdoor Glow-In-The-Dark Paints
Offers 14 fluorescent colors, including red, sky blue, aqua, purple, and more.

How to Choose Luminous Paint

Regular or waterproof luminescent pigment?
Your first step should be determining which medium will be used – based on water (e.g acrylic emulsion) or solvent medium. In first case you must use waterproof luminescent pigments – beside of higher price of such pigments there is also limited selection of available colours – in current offer only aqua blue and yellow-green. So if it's possible it's better to use solvent medium – e.g. nitrocellulose lacquer, epoxy resin, silicone. Good quality solvent base will protect glow in the dark powder from contact with moisture so it has not to be waterproof. Albeit if you're planning to use phosphor as an ingredient of paint which will be oftenly affected to friction you should consider using weaterproof pigment – so even if base of paint will be wiped off waterproof pigment will be still protected from contact with moisture.

UV fastness of luminescent pigments.
Place where glowing pigment will be used is a second important factor. If our luminescent pigment will be permanently affected by direct sunlight or UV light (e.g. as a part of garden furniture) then we should only use three colours: aqua blue, yellow-green or sky blue (product codes JN, ZZ and BL). When you are planning to use pigment indoors or only occasionally outdoor then all pigments from our offer can be used. Reason of this division is that all other colours than listed above are made by adding to base luminescent pigment a second, this time fluorescent pigment which change glowing colour. This added, fluorescent pigment isn't resistant to UV light and with time it degrade. So if we use yellow glowing pigment L-ZO350 permenently outdoor after few months its glowing colour change from yellow to yellow-green.

Choosing particle size of glow in the dark pigment.
Size does matter in this branch. Generally bigger particle size of pigment gives stronger and longer glowing – first letter of each pigment code stands for its grain size (S, M, L or XL). There are exceptions from this rule as high grade glowing powders can have small particle size and strong glowing power – but also higher price.

Glowing power of luminescent pigment and other important data.
You can find detailed luminescence data and a lot of other important informations in technical data sheets available for each glow in the dark pigment. To quickly compare luminescence power of two or more phosphors please use numbers from their product codes – those numbers are pigment's luminescence in mcd/m2 after 10 minutes in darkness. In fact mcd/m2 is hard to imagine unit but for comparision it's useful – for example we can see that pigment L-ZZ660 has almost two times better glowing than L-ZO350. You can also use comparison table of luminescent pigments - this table contains most important data of each luminescent pigment.

Temperature fastness of luminescent pigments.
In some applications pigments may be exposed to very high temperatures – in such cases you should check technical data sheet of luminescent pigment.

How to Use Luminous Paint

Choose the Most Suitable Location for Applying Luminous Paint
Consider the purpose of the luminous paint—whether for road safety, decorative purposes, or signage—and evaluate environmental conditions. For outdoor applications, choose a location that receives adequate sunlight or artificial light during the day to ensure the paint charges properly. In indoor settings, ensure the area is exposed to sufficient lighting to activate the paint’s luminescent properties. Additionally, assess factors such as foot traffic, exposure to weather elements, and the level of maintenance required to keep the painted surface in optimal condition.

Choose the Appropriate Photoluminescent Paint
Selecting the right type of photoluminescent paint is crucial for achieving the desired glow effect and durability. Photoluminescent paints are available in various formulations and colors, each with different light absorption and emission characteristics. Ensure that the paint you choose is specifically designed for the intended application—whether for road marking, signage, or decorative elements.

Choose the Appropriate Indoor and Outdoor Equipment
To apply luminous paint effectively, it is essential to have the right equipment. For indoor applications, you may need standard painting tools such as brushes, rollers, and masking tape. For larger or outdoor projects, consider using spray equipment or specialized road marking machines. Ensure that all equipment is in good working condition and suitable for the type of surface and paint you are using. For road applications, high-quality road construction machines equipped with the appropriate attachments are necessary to ensure precise and durable markings.

Prepare the Road Surface Correctly
Proper surface preparation is key to achieving a high-quality finish with luminous paint. For road surfaces, start by cleaning the area thoroughly to remove dirt, debris, and any loose materials. This may involve sweeping, pressure washing, or using a suitable cleaning solution. Once clean, inspect the surface for any cracks, potholes, or other imperfections that may need repair. Ensure the surface is completely dry before proceeding. Proper surface preparation helps in achieving better adhesion of the paint and enhances its longevity.

Prepare the Road Construction Machine
If you are using a road construction machine for applying luminous paint, preparation is essential for optimal performance. Begin by inspecting the machine to ensure it is clean and free of any old paint residues or blockages. Check that all components, such as the spray nozzles or applicators, are functioning correctly.

Apply White Primer
Applying a white primer is a critical step in the process. The primer acts as a base coat that enhances the adhesion of the luminous paint and ensures a uniform finish. For road surfaces, use a high-quality white primer designed for outdoor use. Apply the primer evenly across the prepared surface using the appropriate equipment or tools. Allow the primer to dry completely as per the manufacturer’s instructions before proceeding with the application of the luminous paint.

Prepare the Photoluminescent Paint to Be Applied
Before application, prepare the photoluminescent paint by thoroughly mixing it to ensure an even distribution of the luminescent particles. Follow the manufacturer's instructions for mixing ratios and any additional preparation steps required. If the paint needs to be thinned or if additives are recommended, carefully incorporate them as directed. Proper preparation of the paint ensures a consistent glow effect and optimal performance.

Apply the Luminous Paint
Finally, apply the luminous paint to the prepared surface. For road markings, use a road construction machine or spray equipment to apply an even layer of paint, following the predetermined patterns or guidelines. For indoor applications, use brushes or rollers for precision. Ensure the paint is applied in a consistent thickness to achieve a uniform glow.

Applications of Luminous Paint

Stairwells
In response to 9/11, many local governments now mandate the use of photo-luminescent materials in emergency stairwells to assist with building evacuations during power outages. We offer various solutions, including reflective tape, luminescent guidance strips for stairs and pathways, and luminous paint for railings and other surfaces.

Curbs
To enhance safety and reduce liability, curbs and curb cuts for wheelchair ramps can be illuminated. This allows customers to better see and safely navigate your building entrances at night.

Subways
Traditional lighting can be improved by applying luminous paint to the edges of subway platforms, stairs, railings, and other areas. This approach enhances visibility and safety for commuters.

City and State Projects
There are numerous applications for luminous materials in city and state projects, including highway and construction sites. These materials ensure that equipment, roads, and workers remain visible at all times.

Schools
As children spend much of their day in school, it's crucial to enhance their safety. Illuminating dimly lit stairwells, entryways, crosswalks, and other areas can help protect them in case of an emergency.

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Frequently Asked Questions

Q: What is the difference between fluorescent and luminous paint?

A: Fluorescent or Luminous – What is the difference? While both Fluorescent and Luminous paints appear to glow, only luminous paint emits light. Luminous paint works by storing light energy and then releasing it to emit a photo phosphorescent glow when a light source is removed.

Q: What is the longest lasting luminescent paint?

A: Aurora's glow lasts the longest – One quick charge will last all night long! In our tests Aurora can glow for up to 24 hours if used properly (3+mm thickness) and charged well under UV light (direct sunlight or a UV flashlight).

Q: What paint works best under black light?

A: Fluorescent dyes: These can be added to regular paint to create a glowing effect under black light. Fluorescent pigments: Similar to fluorescent dyes, these can be added to paint to create a glowing effect.

Q: Is A acrylic paint Luminous?

A: Glazing with acrylic paint can offer your artwork a truly luminous quality and it's a fairly simple process. The layers of paint create a thicker film of semi-transparent acrylic that helps to enhance the colours that you are using. A few simple steps can do wonders in enhancing the effects.

Q: Can modern paints be luminescent?

A: Modern Masters uses proprietary, ultra-violet technologies to create Wildfire Luminescent Visible and Invisible Paints and Invisible Clear Colors. These coatings are water base, easy to apply, color balanced and specifically formulated under UV blacklight for maximum brightness.

Q: How long does Rustoleum glow in the dark paint last?

A: Rust-Oleum® Specialty Glow In The Dark Max is a superior luminous paint that creates a glowing effect in the dark after being charged by natural or artificial light. Glow In The Dark Max glows 2 times stronger than the leading glow in the dark paint*. Glowing effect can last up to 4-8 hours under optimal conditions.

Q: Does luminous paint wear out?

A: If it is the old radium (i.e. radioactive) paint, it will still be glowing at half brightness after about 1,600 years. The newer light absorbing type gradually loses its glowing ability after a few years.

Q: How does luminous paint work?

A: How does luminous paint work? Phosphorescent pigments in the paint absorb energy from light sources (like sunlight or artificial light) and slowly release this energy as visible light in the dark. This process is known as phosphorescence.

Q: What is self luminous paint?

A: Radioluminiscent paint is a self-luminous as it consists of radio isotopes that can strongly emit β-radiation. These paints are obtained by mixing small amount of radioactive isotope mixed with radioluminiscent phosphor chemical. In this case, the radioactive isotope emits the radiation particle by continuous decay.

Q: How do you make luminous paint at home?

A: Place about 0.25 cups (59 mL) of phosphorescent powder into your bowl. Then, gradually pour about 1.25 cups (300 mL) of paint in, a little at a time, carefully stirring the mixture with a paint stirrer after each pour.

Q: What is photoluminescent paint?

A: Photoluminescent Paint | NA-PCG-US | Sherwin-Williams
Sherwin-Williams Photoluminescent Paint makes the tips of the aircraft propeller blades and helicopter rotors visible in dark and low light operations increasing the awareness and safety of nearby personnel in hangers, airstrips, helipads, and repair facilities.

Q: Why is my glow in the dark paint not glowing?

A: Glow Powder only works when mixed with clear mediums. Reason is because it works by absorbing and giving out light. This is only possible with transparent mediums. Opaque mediums like coloured paints do not allow light to pass through.

Q: Is glow paint permanent?

A: Yes! Glow Puff Paint dries permanent on most surfaces, and can even be machine washed when applied to fabric. If you are using Glow Puff Paint on fabric, make sure to keep it away from other fabrics you do not want paint on, such as clothing, carpeting, etc., because it won't wash out of fabric once dry.

Q: What is the chemical that was used for luminous paint?

A: Radium. Radioluminescent paint was invented in 1908 by Sabin Arnold von Sochocky and originally incorporated radium-226. Radium paint was widely used for 40 years on the faces of watches, compasses, and aircraft instruments, so they could be read in the dark.

Q: Is A Acrylic Paint Luminous?

Q: Is luminous paint radioactive?

A: Glow-in-the-dark paint is now made without radioactive material, but in the early 1900s radioactive materials were used to make paint that glowed ( radioluminescence radioluminescence The emission of light from objects containing radioactive material, such as radium.).

Q: What material can the luminous paint be applied on?

A: Wood: It can be used on wood products such as furniture, carvings, and other woodworking items.
Metal: Suitable for metal surfaces like metal furniture, door and window frames, and other metal products.
Plastic: Some luminous paints are compatible with plastic items, such as toys, utensils, and decorations.
Glass: Applicable to glass products like glass ornaments and beverage containers.
Fabric: Can be applied to textiles, creating glowing clothes, shoes, bags, and more.
Ceramics: Suitable for ceramic items such as vases and tableware.
Stone: Can be used on stone surfaces, including decorative stone carvings and other stone products.
Paper: Can be applied to paper, making glowing cards, posters, and similar items.
Plastic Sheets: Suitable for certain plastic sheets, such as display boards and signs.
When choosing a luminous paint, it's important to refer to the specific product's instructions to ensure it is suitable for the material you plan to coat and to apply it correctly according to the manufacturer's guidelines. This ensures optimal adhesion and durability.

Q: Which interior decorations are suitable for luminous paint?

A: Wall Decoration: Luminous paint can be applied to walls to create glowing artistic effects. It’s ideal for establishing a unique ambiance or providing subtle lighting for navigation in specific areas.
Ceiling Design: Painting the ceiling with luminous paint can create eye-catching designs, such as a starry night sky or other glowing patterns, enhancing the room's visual appeal after dark.
Furniture Painting: Applying luminous paint to furniture surfaces like tables, chairs, or cabinets allows these pieces to emit a soft glow at night, adding a magical touch to the room.
Floor Marking: Luminous paint can be used to mark floors, particularly along stair edges or passageways, offering directional guidance in low-light conditions.
Decorative Elements: This paint is also useful in crafting decorative items like vases, sculptures, or wall lamps, contributing unique glowing elements to your interior space.
Children’s Room Decoration: Luminous paint is popular in children’s rooms, often used to create dreamy night sky effects or glowing patterns on walls near the bed.
When incorporating luminous paint into your interior decoration, you can experiment with various effects and designs to align with personal preferences and decorative needs. Be sure to choose luminous paint that complies with indoor safety standards and follow the manufacturer’s usage and safety guidelines.