What is 2K polyurethane?

2K polyurethane is a special wood coating system that is very popular in the woodworking and interior decoration industry. The term “2K” stands for “Two-Component” or the mixture of Base and Hardener before actual use. When mixed, a chemical reaction occurs that results in a high-quality film that is strong and highly resistant to scratches, moisture, and chemicals, outperforming conventional wood coatings. Therefore, 2K polyurethane is suitable for high-traffic areas such as wooden floors, indoor wooden furniture, wooden stairs, kitchen counters, or pieces that require a premium glossy wood surface.

Choosing 2K polyurethane not only enhances the beauty of woodwork but also helps extend its lifespan and reduce long-term maintenance, making it a worthwhile investment for homes or spaces that require both beauty and true durability.

One of the highly recommended products by professional users is Beger Polyurethane 2K Supreme, which is a high-quality two-component wood coating from Beger that provides a showroom-quality clear glossy film, dries quickly, is durable, and contains no mercury or lead, making it suitable for those who desire beautiful, safe, and long-lasting indoor woodwork.

Key Features

• Hard film with exceptional scratch resistance, the highest in the PU 2K system*     

• Dries four times faster than regular polyurethane, completing work within 1 day

• Provides high gloss and enhances wood grain clarity

• Film thickness increased by 75%, glossy and durable

• Excellent resistance to heat, cold, acids, alkalis, and chemicals

• Safe with European standard EN 71, free from 8 types of hazardous heavy metals

• Impact-resistant film (drops a weight of 300 grams from a height of 2 m.)

• 100% water-resistant to prevent moisture penetration into the wood

Proper Use of 2K Polyurethane

Application Steps

Step 1: Surface Preparation

• In cases where the wood has been previously painted and the paint film is peeling, or if it is old wood that has never been painted before, sand it down to the original wood first. Then clean the surface thoroughly to remove grease, dust, oil, or foreign substances.
• In the case of new wood, sand it to remove excess wood fibers, then clean the surface. After that, ensure the surface is free from grease, dust, oil, or foreign substances.
• In the case of rubbery wood, clean the rubber with Beger Thinner M-77.
• In the case of cracks, wood holes, or nail head marks, fill them first with Beger Wood Filler and leave it for 30 minutes. Then sand it down and clean.

Step 2: Priming

• To protect wood from fungi, termites, borers, and wood-eating insects, it is recommended to apply Beger Drite (BegerDrite Wood Preservative) in a clear water-based or oil-based formula, one coat, ensuring all six sides are covered.
• In the case of rubbery wood, such as red wood, teak wood, or hollow wood, apply the rubber-sealing primer Beger Wood Sealer B-2000 in one coat to enhance adhesion.
• In the case of non-rubbery wood, apply Beger Sanding Sealer B-5000/599 (2K) or Beger Sanding Sealer B-2400 in two coats.

Precautions

• Do not prime with shellac or lacquer as it will cause peeling.
• Do not use color dust and shellac to stain wood, as color dust will obstruct adhesion between Beger Polyurethane 2K Supreme and the wood surface.

Step 3: Top Coating

In the case of a glossy film:

Apply Beger Polyurethane 2K Supreme P-910 (glossy type) in 3-4 coats with a mixing ratio by volume of Part A : Part B = 1:1, ready to use. It can be applied without mixing thinner, but for large areas, you can mix Beger Thinner M-50 at 20% by volume.

In the case of a semi-gloss film:

Apply Beger Polyurethane 2K Supreme P-910 (glossy type) in 2-3 coats with a mixing ratio by volume of Part A : Part B = 1:1. Then apply Beger Polyurethane 2K Supreme P-915 (semi-gloss type) in 1-2 coats, mixing Part A : Part B = 1:1, ready to use. It can be applied without mixing thinner, but for large areas, you can mix Beger Thinner M-50 or Beger Thinner M-59 (Beger Thinner M-59) at 20% by volume.

In the case of a matte film:

Apply Beger Polyurethane 2K Supreme P-910 (glossy type) in 2-3 coats with a mixing ratio by volume of Part A : Part B = 1:1. Then apply Beger Polyurethane 2K Supreme P-911 (matte type) in 1-2 coats, mixing Part A before use at a ratio of Part A : Part B = 1:1, ready to use. It can be applied without mixing thinner, but for large areas, you can mix thinner M-50 (Beger Thinner M-50) or Beger Thinner M-59 (Beger Thinner M-59) at 20% by volume.

Note:

• The 2-component polyurethane should be mixed well before application and stirred regularly during application to ensure a uniform mixture. Beger Polyurethane 2K Supreme can be applied without mixing thinner. If mixing is desired, use thinner Beger M-50 or M-59. Matte polyurethane (of any brand) may have brush mark issues, which depend on the surface condition, mixing, application method, and lighting conditions.

• In case you want to adjust the wood color or if the wood has uneven color or differences, especially parquet wood made from various types of wood combined, it can be corrected by applying Beger Polyurethane B-5000 Colour (Beger B-5000 Colour Polyurethane 2K).

• Mix ratio A and B together 1:1 without thinning, applying at least 2 coats. If spraying, mix Beger Thinner M-50 at only 0-10% by volume. Allow to dry for 2-3 hours before applying the next coat each time.

Professional Tip:

• Use in well-ventilated areas and avoid dust during coating.
• It is recommended to use a soft-bristled brush or high-quality roller to avoid foaming.

Summary:

Beger Polyurethane 2K Supreme is the answer for those looking for a high-quality “2K polyurethane” wood coating that offers both gloss, durability, and safety, suitable for all types of interior woodwork.

FAQ Frequently Asked Questions about 2K Polyurethane

Q1: Is 2K polyurethane suitable for outdoor use?
A1: It can be used both outdoors and indoors (under shaded areas).

Q2: Will the floor be slippery after application?
A2: Once completely dry, it will not be slippery, and you can choose between a matte or semi-gloss finish.

Q3: What is it suitable for?

A3: It is suitable for all types of woodwork, such as wooden floors, door frames, doors, windows, table tops, wooden furniture, balconies, and stairs.