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Grants RB 320 Rubber Modified Adhesive 20kg


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$19.95 each
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Grants RB 320 is a white premium grade rubber modified, cement-based tile adhesive suitable for internal and external applications.

It is used for:

    • Ceramic, porcelain and vitrified tiles
      • Tilling over tiles as long as the existing tiles have been primed with a master primer
        • Substrates such as concrete render, rendered brick work, plaster board, fibre cement
          • Tiling main floors
            • Large format tiles
              • Green sand and cement screeds

              When RB 320 is mixed with water in the proportions recommended and correctly applied, it turns into a paste with the following characteristics:

                • Smooth and easy to trowel
                  • Offers flexibility
                    • Improves adhesion
                      • Excellent coverage
                        • Non-slump

                        Do not use it for:

                          • Fixing moisture sensitive tiles or stone
                            • Tiling in immersed situations such as swimming pools and spas
                              • Tiling over solvent-based waterproofing membranes
                                • Tiling over particle board flooring



Online FREE delivery for metro standard orders over $100 in VIC, NSW, SA, and QLD.

All other online standard orders have either a pallet delivery fee of $89 or a parcel delivery fee of $10.

Delivery fees are automatically calculated at checkout based on the items in your order and postcode.

Please click here to view the table below for estimated online standard order delivery fees and time frames as well as non-standard delivery fees and time frames.


We offer FREE click and collect for all online orders in Metro Stores.

If the items in your order are in stock in your state, they can be available to collect from store or be ready to dispatch within 2-3 business days.

Once you place your online order, you will receive an email notification or a phone call from one of our friendly customer service team members within 48 business hours to let you know the date that your order can be picked up in store.

If you have any questions please visit or call your local National Tiles store, submit an online enquiry or call 1300 733 000 between 9 AM to 5 PM AEST on business days.


Product Specifications




Rubber modified

Technical Data & Catalogue

Click Here

Product & Safety Data Sheet

Click Here

Where To Use

• Ceramic tiles
• Vitrified tiles
• Porcelain tiles

Form / Consistency


Open Time

30 minutes

Ready for Grouting on Walls

24 hours

Ready for Grouting on Floors

24 hours

Ready For Use In

24 hours

Application With

Notched trowel with sufficient depth

Finishing With

With a damp cloth before the adhesive sets