Black rubber paint tested on white substrate

Liquid rubber paint for waterproofing and protecting a wide range of substrates

Liquid rubber paint has been on the market for years now, but recent technological developments have both expanded and improved the range of rubber coatings available. While traditionally liquid rubber has been applied as a waterproof roofing solution, there are now products which allow the excellent waterproofing properties of rubber paint to be applied to a much broader range of substrates such as wooden decking, concrete tanks and steel structures.

Rubber coating is heat, chemical, weather, and impact resistant, as well as flexible. In this article we will introduce the benefits and applications of liquid rubber paint products, as well as which products are available in Singapore and where to find them.

Why you should consider Liquid Rubber Paint Coating – 6 top benefits

The reason for the continued success of liquid rubber paint is simple: in terms of waterproofing it outperforms its alternatives. Therefore, one of the most common applications of liquid rubber is flat roof waterproofing; the roofs are at high risk of leakages if not 100% waterproof.

The qualities that make liquid rubber paint the choice for waterproofing also other surfaces than roofs include:

  1. Flexibility
    Liquid rubber has an elongation capability of up to 900%. It can flex and stretch with a substrate through heating and cooling from -40°C to 160°C without damaging, unlike other coatings such as bitumen which are far more brittle.
  2. Eco-friendliness
    Water based and VOC free, these products will not harm you or the nature.
  3. Excellent adhesion
    Liquid rubber paint can be applied to concrete, stone, metal, bitumen, EPDM, wood, PVC, metals, and zinc. It adheres fully to the substrate whatever the material, sealing the substrate and keeping corrosive elements away.
  4. UV stability
    The coating remains flexible for longer and does not chalk, embrittle, or lose strength as a result of exposure to UV radiation.
  5. Weather and chemical resistance
    Rubber is chemically resistant to most corrosive chemicals, acids, alkalis, and solvents, both liquids and gases. Liquid rubber can protect a substrate from chemicals in tanks, as well as corrosive environments like factories or plants. The heat resistance, waterproofing, salt resistance, and UV stability mean liquid rubber is extremely weather-proof.
  6. Non-permeability
    Rubber coatings create an impermeable barrier between the substrate and the environment. They can withstand ponding water for flat roofs, or be used in overspill containment. They are waterproof, vapour tight, air and gas barriers.

The 3 steps of applying liquid rubber paint

One of the great benefits of liquid rubber paint is the ease of application. There are only three basic steps to a liquid rubber application. Whether spray, brush, trowel, or roller, the coating will adhere to almost every surface – concrete, stone, bitumen, EPDM, wood, PVC, metals, foam, tile, and zinc.

Step 1: Preparation

A properly prepared substrate is paramount to the optimal application and performance of a coating. In the case of liquid rubber the substrate needs to be clean, dry, free from grease, dust, and other contaminants. Power washing the area is recommended. Cracks in the surface should be repaired beforehand for the best waterproofing result.

Note: Poor surface preparation may result in failure of the rubber paint coating system; adhesion is affected leading to preventing optimal performance.

rubber paint application with a brush

Rubber paint is also flexible application-wise: it can be applied with a brush, spray, roller or trowel.

Step 2: Application

Liquid rubber should not be applied in temperatures below 5°C, nor when rain is expected within 24 hours, so make sure to check the weather. The paint can be applied with a brush, trowel, roller, or spray, and is cold applied. When painting, the average coverage is 1 L per m2, yielding a 1 mm thickness. The rubber paint is not applied in one thick coat but rather built through layering. 2 mm is enough for a waterproof membrane.


Note: Always study the manufacturer’s instructions on application and obey them.

Step 3: Curing

Once the liquid rubber is applied, it needs to cure. Though it is touch dry in only a few hours, it will take 48 to 72 hours for the paint to be cured and bonded to the substrate. After this usual traffic and usage may resume.

Note: Stick with the given curing times; too early traffic on the coated area may result in failure and have a great financial impact.

Liquid rubber paint Singapore – Find a product or service

Rubber coating is available from many suppliers that include Singapore in the areas they serve, for all projects big and small. There are also local contractors who provide liquid rubber installation services for roofing, waterproofing, and any other project you may have. If you wish to purchase rubber paint, or would like to be connected with one of our partners, do not hesitate to contact us! Our experts are happy to help, just make use of our free quote service to find the right coating solution for your needs.

Example: Flat roof waterproofing with liquid rubber coating

Because of the unique combination of versatility, flexibility, and high performance, there are many areas which can benefit from liquid rubber paint, including roofing, concrete sealing (and protecting steel reinforcement), environmental protection barriers, and waterproofing ponds, planters and basements.

The benefit of having a liquid waterproofing coating installed is that there is limited down time, limited work hours, and so limited extra costs. The basic application process for waterproofing a flat roof might look as follows:

  1. Power wash the area to be coated with rubber paint and, once dry, clean the area of all debris and particulates.
  2. If there are cracks greater than 3mm use a joint filler or mastic to fill them in.
  3. At an expected coverage of 1L to 1m2, pour the desired amount of liquid rubber onto the roof, and spread across the area using a roller or brush. Once the roof is coated evenly, leave to dry.
  4. Once the first layer is touch dry, repeat the procedure for the second coat.
  5. Leave the rubber paint for 48 hours to cure fully.
1 reply
  1. Nic Mok
    Nic Mok says:

    I would like to enquire about rubber paint removal and coating services, I have a playground structure with approx 12 pieces of decking to remove and re coat.



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