Ambient Light Rejecting Projector Screen Paint

From 199.00 ex.VAT

Ambient Light Rejecting Paint has a special formula to resist unwanted light ingress.

It works by selectively reflecting your projector light back to the audience and scattering excess light from hitting the screen from the sides. It reduces the washout brightening effect of ambient light to improve the image reflected in brighter rooms. It’s a great solution for rooms that have some ambient light and will maximize ultra short throw and laser projector picture quality.

  • Designed for living rooms, home theaters and gaming rooms or spaces with some ambient light
  • High performance projection surface that rejects ambient light
  • 5 year product guarantee
  • Developed, designed and tested for use with leading manufacturers such as Epson, BenQ, Sony, Panasonic, LG and Optoma Projectors
  • Eliminates hotspots
  • Easy to apply primer, then 2 coats with simple application steps
  • Ready to use after just 24 hours
  • Wipeable using damp cloth with water, no detergent
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Benefits of Using Smart Ambient Light Rejecting Paint (ALR Screen)

Advanced Ambient Light Rejection

Smart Ambient Light Rejecting Paint resists unwanted light ingress, selectively reflecting projector light while scattering excess light, improving image quality in brighter rooms.

Enhanced Picture Reproduction

Designed to maximize pixel definition, clarity, and rejection of ambient light, delivering luminous, high-definition images for home theaters and gaming setups.

Specular & Diffuse Reflection Reduction

Ultra matte layering technology eliminates both specular and diffuse reflection, minimizing stray light and maintaining image integrity.

Optimal Projection Performance

Tested with industry standard projectors, ensuring no hotspotting or loss of performance on regular material surfaces.

Easy Application and Sleek Finish

Quick and hassle-free application for subtle projection functionality, maintaining a minimal and sleek appearance in home theaters.

For Use With

  • Projector Requirements: Interactive, HD, 4K, Standard Projectors
  • Minimum Recommended Lumen Value: 3,000 Lumens
  • Lighting: works in most rooms with low to mid level ambient light
  • Compatible Surfaces: can be applied to fabrics and is suitable for painting or refurbishing old screens, but not suitable for roll-up screens


Comparison Table

Compare the performance and specifications of our full projection range

View Comparison Table

ALR Screen Paint - Technical Specifications

Color: Light Grey
Finish: Ultra Matte
Screen Size:

  • 4.5 m2 : 120” / 320cm at 16:9 Aspect Ratio
  • 25 m2 : 301"" / 764.5cm at 16:9 Aspect Ratio


  • 4.5 m2 : 1.19kg / 880ml
  • 25 m2 : 6.58kg / 5l


  • 4.5 m2 : 279 x 157 cm at 16:9 Aspect Ratio
  • 25 m2 : 667 x 375 cm at 16:9 Aspect Ratio

Environmental (exceeds all EU/US standards): low VOC, Solvent free, PFOA & PFOS free and Isocyanates free
Odor: Very Low
VOC: Less than 0.33%
Certification: Independent Projection Performance Report – CREST, Gypsum Surface Finish Quality Standard of EU Level Q4

Unsure about the right product for you? We offer video call support, live chat, phone and email. Avail of free technical advice and suggestions for ideas and product recommendations so you can choose what will work best for you. Unsure about installation? We are here to help and advise you.

Ambient Light Rejecting – Kit Contents 4.5 m2

  • ALR Screen Paint
  • White Primer
  • Roller
  • Roller Handle
  • Application Guide

Ambient Light Rejecting – Kit Contents 25 m2

  • ALR Screen Paint
  • Application Guide

Ambient Light Rejecting Paint Reviews

MAC AV Solutions

Impressive performance. We were looking for a solution for an ALR projection screen for a large auditorium with high light levels but in a large size which was proving cost prohibitive, then we found Smarter Surfaces. I have to complement the technical support and the product has been fantastic, excellent value and very effective.

Finco Ltd

Good product and good support was provided, and will use again. Thomas J

East Coast AV

This product was identified by the client for a church hall and to be fair has worked very well. Painted on similar to an oil paint with no issues, surface preparation is very important.

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Once applied to your wall, our Ambient Light Rejection Projector Screen Paint is ready for use as a projection surface after 24 hours once the surface is fully dry. Simply set up your projector as needed and aim towards the painted wall. We recommend ensuring your projector is calibrated correctly. Check the owners manual for details.

Gain refers to the screen's ability to reflect and amplify the brightness of the projected image. It is a measure of how effectively the screen reflects light back to the viewer's eyes. The gain value represents the ratio of the screen's reflective power compared to a standard reference surface, usually a matte white screen with a gain of 1.0.

The gain value indicates the amount of reflective lumens that the screen can provide. A higher gain value means that more light is reflected back, resulting in a brighter image on the screen. Conversely, a lower gain value means less light is reflected, resulting in a dimmer image.

The gain value of a screen also influences the width of the viewing angle. A screen with a higher gain will have a narrower viewing angle, meaning that viewers must be positioned more directly in front of the screen to experience the maximum brightness. On the other hand, a screen with a lower gain will have a wider viewing angle, allowing viewers to see a brighter image even if they are not directly in front of the screen.

It's important to note that the choice of gain depends on the specific viewing environment and the desired viewing experience. Factors such as ambient light, screen size, projector brightness, and audience seating arrangement all play a role in determining the optimal gain for a given situation.

Gain affects the brightness of the projected image and the quality of viewing angles. It determines how well the screen reflects light and impacts the clarity and width of the viewing angle.

No, a higher gain projector screen doesn't automatically guarantee a better image quality. While it can provide a brighter image from certain angles, it may result in diminished brightness from other perspectives. Higher gain screens typically have a smaller viewing angle.

The standard gain for a projector screen is 1.0, which ensures equal brightness from all sides and visible from multiple angles. However, the ideal gain depends on the viewer's preferences and the specific environment. Other factors to consider are ambient light conditions, projector specifications and distance from the screen surface.

High gain screens offer clear and visible images in bright settings, enhance visibility in dark conditions, reflect minimal light from walls and ceiling, and are effective in eliminating light from fabric screens resistant to general lighting.

High gain screens have a reduced viewing angle for viewers not in the middle, require viewers to sit directly opposite the screen for optimal brightness, may not be bright enough for larger audiences due to restrictive viewing angles, and are not ideal for outdoor viewing.

Low gain screens provide a more expansive viewing angle for larger audiences, diffuse light evenly across a wider angle for an equal viewing experience, and reduce projector brightness for indoor settings.

Low gain screens are not ideal for outdoor viewing due to reduced brightness, reject some light from the projector, and may not provide ample contrast to view all images clearly.

When it comes to creating immersive and dynamic visual experiences, blending projections is a popular technique used in various applications such as art installations, theatres, and large-scale presentations. To achieve seamless and cohesive projections, the choice of projection screen plays a crucial role. Our projection screen paint offers an ideal solution for blending multiple projections onto a single surface. With its advanced formulation, our projector paint is specifically designed to facilitate the blending process and deliver outstanding results.

Blending projections requires precise colour accuracy, uniform brightness, and excellent light diffusion to ensure a smooth transition between the projected images. Our projection screen paint was developed with all these aspects, allowing you to achieve a cohesive and immersive display.

When it comes to large scale screens, our projection screen paint eliminates the need for cumbersome and expensive physical screens, providing a more flexible and cost-effective solution for blending projections. Transform any space into an immersive canvas where multiple projections merge harmoniously, captivating your audience.

Our entire range of paints is compatible with both 2D and 3D projectors, ensuring optimal performance regardless of the projection mode. When projecting a 3D image onto our paint, it seamlessly delivers the intended effect, creating an immersive viewing experience when paired with 3D glasses.

3D projectors work by projecting two slightly different images which overlap on the screen. These images are passed through special optical filters which results in the light being polarised in a different way for each of the projections. When you view the two images through special 3D glasses, each lens blocks one of the images, meaning that your left eye sees one image and your right eye the other image.

It's therefore really important that the projection screen you use does not change the polarity of the light if you are using a 3D projector. All of our paint products are "polarity preserving" which means that the image you see will be exactly the same polarity as is intended, preserving the full 3D effect.

The Sound Absorption Coefficient (SAC) is a measure of how much sound energy is absorbed by a material when sound waves pass through it. In our testing, the SAC is being measured for a 12mm gypsum board, which is a common building material.

The SAC can vary with the frequency of the sound waves that are passing through the material. Different frequencies of sound waves have different wavelengths, and these wavelengths can interact with the material in different ways. Therefore, the SAC values provided are a range of values, as the SAC will vary depending on the frequency of the sound waves being absorbed. In our tests we recorded the following results:

Unpainted Board α = 0.04-0.07
Painted Board α = 0.04-0.07

The values provided are for an unpainted 12mm gypsum board and a painted 12mm gypsum board. The α values of 0.04-0.07 for both the unpainted and painted board indicate the range of SAC values for these materials. This means that, when sound waves pass through a 12mm gypsum board, some of the sound energy will be absorbed by the material, with the amount of absorption falling within the range of 0.04-0.07 depending on the frequency of the sound waves. However, it also indicates that each of our paints are acoustically transparent as there is no deviation from the standard board to the painted one.

This innovative Ambient Light Rejecting Projection Screne Paint uses unique pigment particle technology to scatter ambient light ingress from the horixontal plane which protects the projected light beam by reducing light interference

You can apply any the ALR Paint using a roller or a spray. Generally we recommend roller application is the most common.

All surfaces to be painted should be clean, dry and free from loose materials. Measure the area you wish to paint and clearly mark it using masking tape unless you are painting a full wall. Apply a primer coat to bare, untreated surfaces with one coat of Smart White Primer.

Fill any defects or cracks and sand the entire surface smooth using a 120 grade sandpaper or similar. Stir the projector paint thoroughly before use. For best results, apply paint using a mohair or lint free short pile roller sleeve.

Smart Ambient Light Rejecting Projector Screen Paint is suitable for use on plaster, wallboards, wood, metal concrete and composites effectively any smooth surface. For interior use only, for exterior use see our outdoor projection paint.

We recommend applying ALR screen paint onto a previously primed or painted surface. Prime bare, untreated surfaces with one coat of Smart White Primer.

Yes Smart ALR paint is completely safe to use. Smart ALR paint is very low VOC, solvent free, PFOA & PFOS free and isocyanates free.

Smart ALR paint meets the highest environmental standards has been indendently certified for Fire performance and VOC. As with any paint product we recommend wearing gloves during application.

Smart ALR paint is 100% free of Isocyanates and solvents. Unlike some poorer quality products on the market we do not use isocyanates in our ALR paint or any of our products which is a hazardous product and should only be used by trained professionals using rigorous safety procedures.

Use the gloves supplied in the kit while applying Smart ALR paint. In addition, safety glasses should be worn. As with any painting process, ensure the room is ventilated.

Smart ALR paint is not flammable and is certified for fire performance making it certified for use in schools and offices. Smart ALR paint has a very high flashpoint above 158 degrees fahrenheit.

Yes, it is completely safe to apply dry erase paint around adults and children as it is certified as VOC free and low odour product. Smart ALR paint does not contain any isocyanates which means it is extremely safe to use around people.

In case of contact with skin, rinse skin with warm soapy water.

Smart Ambient Light Rejecting paint is water based so it can cleaned using water.

Ideally with compressed air which can be purchased in aerosol formart or dab your surface slightly damp with warm water cloth,

ALR Screen is suitable for use with projectors above 2000 lumens

The gain value for Smart Ambient Light Rejecting screen paint is 0.71 @ 90°

Ambient Light Rejecting Paint Installation

Smart Ambient Light Rejecting Projector Screen Paint is suitable for use on plaster, wallboards, wood, metal concrete and composites. For interior use only.

All surfaces to be painted should be clean, dry and free from loose materials. Measure the area you wish to paint and clearly mark it using masking tape.

Prime bare, untreated surfaces with one coat of Smart White Primer. Once primed, lightly sand the surface, and apply the first coat with a mohair or lint free short pile roller sleeve. Allow to dry before applying the second coat.

After 24 hours our Ambient Light Rejecting Paint is ready to use.

You can request a sample pack if you want to sample our products’ performance first.

Have any questions, or need advice? We pride ourselves on our excellent customer service and support. Just get in touch with us.

Application GuideA full application guide to help you apply our Ambient Light Rejecting Paint.

Ambient Light Rejecting Paint installation Video

Watch our step-by-step Video Application Guide

Ambient Light Rejecting Paint Videos

Watch our step-by-step Video Application Guide

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