Bona Mix & Fill

1. Q: What is Bona Mix&Fill?

Bona Mix&Fill is a water-based joint filler designed for use with fine sanding dust to fill joints and defects in timber floors. 2. Q: What is its primary application?

A: It is used to fill joints up to 2 mm wide and correct minor defects in timber floors sanded back to bare wood. 3. Q: Can it be used on parquetry floors?

A: Yes, Bona Mix&Fill is particularly suitable for parquetry floors, both dark and light species. 4. Q: What is the mixing ratio for Bona Mix&Fill?

A: The recommended mix ratio is 10-15% sanding dust to 85-90% product to achieve a smooth consistency. 5. Q: How is it applied?

A: It is applied using a stainless steel trowel across the entire floor. 6. Q: What is the drying time between applications?

A: Approximately 20 minutes under normal climate conditions. 7. Q: Can it be used on oiled floors?

A: Yes, Bona Mix&Fill can be used on oiled floors. However, a trial should be conducted on colored or stained floors to assess the final color. 8. Q: What makes it easy to sand?

A: Bona Mix&Fill is designed with easy sanding properties, simplifying the preparation process for subsequent treatments. 9. Q: What is its VOC content?

A: Bona Mix&Fill has a maximum VOC content of 5 g/L. 10. Q: Is it odorless? - A: Yes, it is low in solvent content and is odorless during application.

11. Q: How long does it take until sanding is possible? - A: About 20 minutes under normal climate conditions.

12. Q: Can it be used with all Bona finishes? - A: Yes, Bona Mix&Fill is compatible with all Bona finishes.

13. Q: Is it anti-corrosive? - A: Yes, it is anti-corrosive and does not cause rust stains.

14. Q: Can it be used on colored or stained floors? - A: Yes, but a trial should be conducted to assess the final color achieved.

15. Q: What type of lacquer is Bona Mix&Fill based on? - A: It is based on acrylate dispersion.

16. Q: Can it be used on red-colored timber species? - A: It is not recommended for use as a single product on red-colored timber species. A Bona primer should be used in such cases.

17. Q: What is the shelf life of Bona Mix&Fill? - A: The shelf life is one year from the date of production in an unopened original container.

18. Q: Can it be used on timber with a wide range of colors? - A: It is designed for use on timbers that are broadly a single color/tone, and its appearance minimization may be reduced on timbers with a wide range of colors.

19. Q: What kind of gaps can it fill? - A: It can fill joints up to 2 mm wide. Gaps within plank or end-grain floors are typically not filled.

20. Q: Is it suitable for butt-edged floors? - A: No, it is not suitable for butt-edged floors.

21. Q: How is it cleaned? - A: Tools should be wiped free from residual material before cleaning with a minimum of water. Dried material can be removed mechanically or by scrubbing with water.

22. Q: Can it be used on chemically treated wood? - A: Certain wood species, including chemically treated wood, can trigger unforeseen reactions. A test is recommended before use.

23. Q: Is it suitable for use on primed surfaces? - A: Bona Mix&Fill is not designed to be used on any surface other than unfinished bare wood. It should not be used over a primer coat.

24. Q: Can it be applied over a finish? - A: If used to fill 'missed' holes noted after finish application, the area around the hole should be carefully taped to ensure no residues of the mixed product remain on the coated surface.

25. Q: What should be done if residues of Mix&Fill appear on a coated surface? - A: Residues of Mix&Fill on a coated surface may appear as a light-colored 'cloud,' and the floor may need to be resanded to remove them.

26. Q: Can it be used on parquet floors of various wood species? - A: Yes, it can be used on parquetry floors, whether dark or light species.

27. Q: How is the product mixed before application? - A: The product is mixed with fine clean sanding dust to a smooth consistency similar to thick cream.

28. Q: Is it suitable for use on all wood types? - A: It is recommended for use on timbers broadly of a single color/tone. However, it can be used with various wood types.

29. Q: How is it applied to the floor? - A: Bona Mix&Fill is applied across the whole floor using a stainless steel trowel.

30. Q: Can it be used to fill gaps larger than 2 mm? - A: No, it is not suitable for joints larger than 2 mm or in places unsupported by wood beneath it.

31. Q: What precautions should be taken on very dry floors during application? - A: It is beneficial to apply a fine mist spray of clean water on the floor directly before filling to prevent premature drying of the Mix&Fill.

32. Q: What should be done before applying further coats after filling? - A: Excess Mix&Fill should be sanded off before applying further coats. Gaps of 2 mm wide/deep may require overnight drying.

33. Q: Can it be used with colored oil or stained floors? - A: Yes, but a trial should be carried out to assess the final color achieved.

34. Q: Is it suitable for use on tropical wood species? - A: Certain tropical wood species, like Merbau/Kwila, may trigger reactions. A test is recommended before use.

35. Q: What is the application rate of Bona Mix&Fill? - A: The application rate is approximately 10 m²/L, depending on gap size and quantity.

36. Q: Can it be used with other Bona products? - A: Yes, it can be used with all Bona finishes and is compatible with other Bona products.

37. Q: What should be done if the product separates before use? - A: The product separation into liquid and solids fractions is normal, and they can be restored to a homogenous liquid by shaking before use.

38. Q: What is the temperature range for storage and transport? - A: The temperature must not fall below +5°C or exceed +25°C during storage and transport.

39. Q: Can it be used with a primer coat? - A: Bona Mix&Fill is not designed to be used over a primer coat.

40. Q: What happens if it is used on timber with a wide range of colors? - A: The minimization of the filler's appearance is significantly reduced on timbers with a wide range of colors.

41. Q: Can it be used on chemically treated wood? - A: Certain chemically treated wood may trigger unforeseen reactions. A test is recommended before use.

42. Q: What type of filler is Bona Mix&Fill not suitable for? - A: It is not suitable for joints larger than 2 mm or in places unsupported by wood beneath it. It is not suitable for butt-edged floors.

43. Q: What is the recommended grit for sanding off excess Mix&Fill? - A: Grit 100-120 is recommended for sanding off excess Mix&Fill.

44. Q: Can it be used on previously finished surfaces? - A: It can be used on previously finished surfaces after sanding back to bare wood.

45. Q: Can it be applied over a finish? - A: It is not recommended to apply over a finish. If used to fill 'missed' holes after finish application, precautions should be taken to avoid residues on the coated surface.

46. Q: Can it be used on chemically treated wood? - A: Certain chemically treated wood may cause unexpected reactions. A test should be conducted before use.

47. Q: Can it be used over a primer coat? - A: Bona Mix&Fill is not designed to be used over a primer coat.

48. Q: Is it suitable for wide and deep gaps? - A: Wide and/or deep gaps may need to be treated several times.

49. Q: Can it be used on previously finished surfaces? - A: Yes, it can be used on previously finished surfaces after sanding back to bare wood.

50. Q: What precautions should be taken on very dry floors during application? - A: A fine mist spray of clean water can be applied to prevent premature drying of the Mix&Fill.

This Q&A session covers various aspects of Bona Mix&Fill, from its application and compatibility to drying times and special considerations for different floor types.