Bona R848T Floor Adhesive

Thorough preparation is essential for a secure bond and a successful wood flooring installation. The subfloor must be clean, dry, level and structurally sound before application. Remove dust, dirt, grease and any surface contamination that may reduce adhesion. A lightly textured surface is often beneficial for best results.

• Remove old adhesive residues, paint, curing compounds or other coatings that may interfere with bonding.
• Mechanical preparation such as sanding, grinding or shot blasting may be required on heavily contaminated surfaces.
• Repair cracks, hollows and uneven areas using a suitable cement based repair or levelling compound.
• Check the floor is flat and in line with the flooring manufacturer's installation tolerances.
• Room temperature should be at least 18°C, with floor temperature between 15°C and 20°C when installing over underfloor heating.
• Store and transport the adhesive between 5°C and 25°C.
• Where moisture control is required, use an appropriate Bona damp proof membrane system.

Please Note: Allow repair compounds and levelling products to fully cure before laying wood flooring. Do not install over movement joints or structural expansion joints.

We recommend trialing a test area before starting your project to check suitability and compatibility. Ensure the room temperature is at least 18°C, floor temperature is at least 15°C (maximum 20°C with underfloor heating) and relative humidity does not exceed 70%. Bring the adhesive to room temperature before use for best working consistency.

1. Open the container and remove the protective foil, along with any cured adhesive around the rim.
2. Apply evenly to the floor using a suitable Bona notched trowel, holding the trowel at a consistent angle.
3. Work in manageable areas and lay the flooring into the wet adhesive within the 30 minute open time.
4. Press boards firmly into place to achieve full contact and a stable bond.
5. If a skin forms on the adhesive surface, remove it and apply fresh adhesive before continuing.
6. Clean away any adhesive forced into joints or onto finished surfaces before it cures.

Coverage Guide

Use a finer trowel for smaller flooring elements or smoother floors, and a coarser trowel for larger boards or rougher surfaces. Coverage rates may vary depending on floor flatness and surface texture.

• Approx. 850-1250g/m² depending on subfloor smoothness, flooring type and trowel choice.
• Up to 17m² per 15kg pack at lower spread rates.
• Around 12m² per 15kg pack at average spread rates.
• Around 10m² per 15kg pack at heavier spread rates or uneven subfloors.
• Use a suitable notched or flat trowel such as:
  • Bona Trowel Plus
  • Bona Flat Bladed Trowel Applicator
  • Bona Adhesive Applicator Trowel

Light foot traffic is possible after approximately 12 hours. Full cure is typically achieved after 24 to 48 hours, depending on site conditions.

For full installation guidance, always refer to the latest Bona Technical Data Sheet.

Once the flooring has been installed, allow the adhesive to cure fully before carrying out sanding, sealing or finishing work. Drying times can vary depending on flooring type, site temperature and humidity.

• Light foot traffic is typically possible after approximately 12 hours.
• Full cure is usually achieved within 24 to 48 hours under normal conditions.
• Allow the adhesive to fully cure before subjecting the floor to heavy loads or moving furniture back into place.
• Where sanding or surface finishing is required, ensure the adhesive has fully cured first.
• Follow the flooring manufacturer's guidance before applying oils, lacquers or other finishes.
• For a complete floor care system, consider compatible Bona prodcts such as:
  • Bona Classic UX Primer Water based primer for rich colour and reduced side bonding
  • Bona Traffic GO Durable floor lacquer for fast drying and lasting protection
  • Bona Polish Protective polish that restores sheen and refreshes floors
  • Bona Freshen Up Floor refresher that revives dull surfaces and shine

Please Note: Avoid covering the floor with non-breathable sheeting, rugs or mats until the adhesive and subfloor have fully dried.

1) What is Bona R848T Floor Adhesive used for?
Bona R848T is used for bonding parquet, mosaic parquet and engineered wood flooring to suitable prepared subfloors.

2) What is the difference between Bona R848 and Bona R848T?
Bona R848T has a thicker consistency than Bona R848, giving it improved initial grab and better rib stability during installation.

3) Does Bona R848T need a primer?
A primer is not normally required on suitable prepared subfloors. On weak, porous or difficult surfaces, a suitable Bona primer may be recommended.

4) How long does Bona R848T take to dry?
Light foot traffic is usually possible after approximately 12 hours. Full cure is typically achieved within 24 to 48 hours, depending on site conditions.

5) Can Bona R848T be used with underfloor heating?
Yes, it can be used with suitable wood flooring and underfloor heating systems when the heating protocol and flooring manufacturer guidance are followed.

6) Is Bona R848T water based?
No. Bona R848T is a silane-based adhesive, but it is water and solvent free.

7) How much Bona R848T will I need?
Usage depends on the flooring type, trowel size and surface texture. As a guide, consumption ranges from approximately 850 g/m² to 1250 g/m², or 2000 to 2200 g/m² when used for moisture barrier application.