Alka SEAL – 25% Concrete Sealer 20 litre -Clear

Alkaseal: A penetrating, non-yellowing sealer for concrete floors. Easy to apply, resistant to oils/greases, suitable for exterior use.

$200.00 inc GST

SKU: 15188E Categories: ,



Alka SEAL – 25% Concrete Sealer 20 litre -Clear


Alka Seal serves as a budget-friendly sealer, ideal for:

  • Warehouses and storage facilities
  • Car parks and garages
  • Light industrial buildings
  • Exterior pavements
  • Patios
  • Driveways

Packaging: 20-liter drums

Color: Clear, Alka Colour Chart

Shelf Life: 24 months

Storage Conditions:

Store away from direct sunlight, flames, sparks, and heat.

Flash Point: >25°C

Density: 0.91 Kg/L


Layer Thickness: Theoretical DFT per coat 30 – 45 Microns

Curing Time: Tack-free in 1 to 2 hours

Waiting Time for Over coating: Re-coat time – 2 to 4 hours


  • Approximately 5-10 sqm per Litre for open or textured surfaces.
  • Approximately 10-15 sqm per Litre for sealed or more closed surfaces.
  • Typically, 2 to 3 coats are applied.

Application Instructions:

You can apply Alka Seal using spray or roller. To achieve optimal results, start by applying the first coat, and potentially the second, at falling temperatures. This helps prevent bubbling caused by trapped air in the substrate and enhances penetration. Moreover, premature exposure to moisture may lead to whitening or clouding of the finished product.

Therefore, it’s advisable to conduct a trial in a small area before proceeding with full application. Ensure even application and refrain from applying excess product on the surface. This is crucial as imperfections might become visible through the thin coating.

Cleaning of Equipment:

Clean immediately using solvent. Hardened product can only be removed mechanically.

Download Technical datasheet

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  • Self-priming
  • Easy application
  • Excellent resistance to oils and greases
  • Suitable for outdoor exposure
  • Non-yellowing
  • Available in clear and various colors



Colour accuracy disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.

Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.