SIMALFA® 825 – the best adhesive for upholstering

We asked our expert for upholstery adhesives, Mariusz Stróżak, to put the new SIMALFA® 825 through its paces. In this interview, he tells us about his experiences with upholstering adhesives and the performance of SIMALFA® 825.

SIMALFA 825 upholstery adhesive


Hello Mariusz. You have been working at SIMALFA® and in the upholstered furniture industry for a long time. That means that you have already glued a lot – can you tell us a bit about your experiences?

That’s right. I have been working in the upholstery industry since 1998. Adhesives have been the focus of my work for nearly 20 years. They are a central component in the manufacturing of upholstered furniture and are used in various ways. In my work, I have processed, tested, and compared a variety of brands from different manufacturers. Especially when it comes to upholstering high-quality products in the furniture industry, the demands on adhesive application and processing are particularly high. Many of the expected developments in future furniture design are unattainable without a high-class adhesive. The perfect adhesive can easily be processed and has high durability.

Technical Data for SIMALFA® 825

The latest development from the 820 series is the SIMALFA® 825, which has impressive wet adhesive properties and outstanding bonding properties on non-porous materials, especially PE and PP. The adhesive is perfectly suitable for the production of upholstery or office seating furniture.

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Technical Data for SIMALFA® 825


You are talking about the high demands when it comes to the bonding of furniture. How are these requirements being met today?

In the production of upholstered furniture, solvent-based products are still widely used. On closer inspection, however, we see some crucial disadvantages for the manufacturer as well as for the consumer. Once the materials to be bonded are put together, it quickly becomes impossible to reposition them. This means that the processor can no longer make any corrections to the workpiece. Additionally, solvent-based adhesives remain sticky and quickly lose their flexibility. This lost elasticity of the bonded adhesive film causes the adhesive seam to begin to crumble. This has a negative effect on the quality of the upholstered furniture. And of course, we all know that volatile solvents are harmful to the environment and can also affect the health and safety of processors. The solvent residues can also be found in the end product.

Mariusz Strozak - SIMALFA upholstery expert

The best adhesive for foam bonding in the upholstery industry I have ever worked with. - Mariusz Stróżak, SIMALFA® Upholstery Expert


It seems like this solution does not convince you. What about water-based adhesives?

There are many applications where classic water-based adhesives are used to achieve results of the same or oftentimes even higher quality. But here, too, are restrictions that must be taken into account. Since the adhesive absorbs high tension during bonding, water-based adhesives must dry quickly. Up to now, bonding under tension could only be carried out to a limited extent, as a high initial tack is required. This means that workpieces can only be repositioned to a limited degree. In addition, classic water-based adhesives have only a limited area of application in the upholstery industry. This has to do with the fact that not all materials used in this field of application can be bonded using adhesives based on water.

How does SIMALFA® 825 change the game?

We have been using the new SIMALFA® 825 at various customers in the upholstery industry for quite some time. This is We have been using the new SIMALFA® 825 for various customers in the upholstery industry for quite some time. This is a water-based 2-component adhesive that even convinced me – that does not happen easily (laughs). The speed at which the adhesive can be processed, the ability to quickly tackle further production steps, and the wide range of application possibilities with SIMALFA® 825 are remarkable. The adhesive bonds all the materials used in the upholstery industry with ease. And SIMALFA® 825 comes out on top with the industry-typical bondings of foam on wood. We tested everything we could get our hands-on. Hardwood, softwood, plywood, chipboard, HDF, MDF, OSB, etc. Even if the foam is glued under high tension, SIMALFA® 825 can withstand the stress without any problems. Bonding to plastic is also no problem.

But it gets even better. We talked about repositioning. SIMALFA® 825 is the first water-based adhesive, that I know, that remains repositionable even with upholstered products. This is a crucial added value for every upholsterer.


So everything an upholsterer’s heart desires?

You could say that (laughs). I am very convinced of the new SIMALFA® type. Well, you will say that as a SIMALFA® employee I am biased, and you may be right. Let me explain it this way: We were in the production of one of our customers. The production manager said to me that SIMALFA® 825 is the first water-based adhesive with which he can completely replace his solvent-based products. So, if he had to remove solvents from his upholstery overnight, he knows that he can sleep better thanks to SIMALFA® 825. And that means something.

Advantages with SIMALFA® 825

  • Bonds all upholstery materials to foam Particularly suitable for bonding foam and wood

  • Bonds foam to plastic easily

  • Remains repositionable during processing

  • Excellent flowability – improves processing Fast application without pumps or pressure pots (SIMALFA® Free Flowing System)

  • Very strong and flexible final adhesion

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