FAQS
Got a question? Check out our FAQs first. You’ll find answers to the most common questions listed here by subject.
Frequently Asked Questions
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No, these synthetic materials cannot be bonded together. They are usually manufactured using industrial processes at high temperatures.
PP = Polypropylene
PE = Polyethylene
PA = Polyamide = Nylon
PTFE = Polytetrafluoroethylene
No, most types of adhesives need to be used at a temperature above 5° Celsius and some adhesives cure at even higher temperatures.
No, silicone sealants do not adhere very well to other materials.As a result, paint does not adhere well to the sealant.
Yes, this product is based on SMP polymers and can be painted with all types of paints.
No, only sealants types that contain moisture or solvents can shrink easily. Various silicone sealants and the Poly Max® range variants do not shrink.
No, because more than 99 percent of Brazil's sugar cane plantations are located more than 2,000 km from the Amazon. Thanks to comprehensive government measures, the expansion of sugarcane will continue to be limited to 7.5 percent of Brazil's territory, and sugarcane cultivation will be banned in much of the country.
About 300,000 hectares of agricultural land were needed to grow biomass to produce 1.2 million tonnes of bioplastics in 2011. According to calculations by the Food and Agriculture Organization of the United Nations (FAO) and the Institute for Bioplastics and Biocomposites (IfBB), only 0.006% of agricultural land was used for the production of bioplastics, out of a global agricultural potential of around 5 billion hectares. In the same year, the total consumption of plastics of all kinds was about 250 million tons worldwide. If it were possible to meet the global demand for plastics from bioplastics alone, only about 1.5% of the world's available agricultural land would be needed to produce them.
A DoP is available in digital form on the product information page for each product to which it applies. At the moment, we are still in the implementation phase. You can request a missing DoP through the contact form, stating the product in question.
If you have a question or a comment, you can send us a message using the contact form.
When fixing a skirting board, for example, you may find that the wall or skirting board is not completely straight. A small amount of pressure has to be applied to the skirting board. Apply the professional Montagekit to the skirting board and press the skirting board against the wall. This may seem strange, but afterwards, pull the skirting board away from the wall and let the glue dry for 5 minutes. Once you've done that, if you press the skirting board firmly against the wall again, you can ensure that it sticks.
The glue stick must be emptied as far as possible and the container must be placed in the designated collection system (yellow bag, yellow bin, etc.). Cardboard or cardboard packaging must be recycled. Because the new container, like the old one, is largely made of PE plastic, it is easy to recycle.
It is important to close the cartridge as tightly as possible. After use, you should unscrew the nozzle from the cartridge, place a piece of plastic or aluminium foil on the cartridge, and then screw the nozzle back on. The nozzle is also equipped with a cap. You can also place a film between the nozzle and the cap. In addition, it is important to store the glue in a cool, dry place.
Apply glue to the material to be bonded and press the material against the substrate. This may sound strange, but afterwards, pull the material apart again. This means there is now glue in both the material and the substrate. Allow the glue to dry for 5 minutes and press the material firmly back against the substrate. This method ensures a high initial bonding strength. This is important if, for example, you can't use staples or if you're gluing under light pressure.
The amount of glue needed depends largely on the type of job and the type of Montagekit. In general, bonding large boards requires less glue than, for example, wooden or slatted structures. In addition, the space between the materials and the substrate that needs to be filled also plays a part.
As a guideline: for boards, 2 to 2.5 m2 per cartridge and for wooden and slatted structures, 1.5 to 2 m2 per cartridge.
Some types of sealant contain moisture. These sealants do not become transparent until they have completely dried out and all the moisture has escaped. Please note that if the sealant is applied between non-porous materials and/or on cold, damp areas, it may take a few weeks for the sealant to dry out completely.
Silicone sealants used in bathrooms contain special anti-mould ingredients. For this reason, the sealant usually ensures that mould does not develop over a long period of time. However, if the bathroom is not adequately ventilated or soap residue is left on the joint sealant for a long time, the effect of the special ingredients can diminish.
Yes, that's fine. Since adhesives do not harden at temperatures below 5° Celsius, we recommend you store smaller tubes and bottles in a (plastic) bag in the refrigerator. However, we do not advise storing adhesives in the freezer compartment, as some types of adhesives contain water.
Yes, the Poly Max® range is acid-free.
The container of the UHU Stic ReNATURE is not biodegradable or compostable. Biodegradable materials have a limited shelf life. However, a long shelf life of the product is a basic requirement for UHU stic users. Our research has shown that our Bio-PE-based housing is the best way to meet the product requirements in terms of durability and recyclability.
Yes. The new UHU Stic ReNATURE can be recycled as usual, as Bio-PE has the same recycling properties as traditional PE. For this purpose, the container should be placed in the appropriate collection systems after use. Depending on the existing infrastructure, the product is recycled, e.g. in the mixed plastic fraction, or used to generate energy.
Over 90% of the plastics produced today are made from petroleum, with an annual consumption of more than 250 million tons worldwide. Bio-based plastics, on the other hand, are products that come partly or even entirely from renewable raw materials. By replacing petroleum-based raw materials with renewable ones, fossil resources can be saved and significantly less climate-damaging CO2 is emitted.
This regulation came into force on 1 July 2013 and establishes the minimum requirements for construction products in the areas of safety, fire resistance and mechanical resistance, among others. When a harmonised European standard has been established for a specific group of products, the manufacturer has an obligation to demonstrate that it complies with the relevant CE requirement and to label the product with the CE logo. In addition, a Declaration of Performance (DoP) must be available, describing how the product has been tested and indicating the level of performance achieved by the product. PVC adhesives, tile adhesives and chemical dowels are subject to this European Construction Products Regulation. Closures will be covered by the regulation from 2014. The respective Declarations of Performance (DoPs) are available on request.
If the glue is still wet, it can usually be removed with acetone. White wood adhesives and wallpaper paste are best removed with water.
Once adhesive residue has hardened, it can usually only be removed 'mechanically'. So you have to cut it off, scrape it off, sand it down, etc.
At UHU, thinking and acting in an environmentally conscious and intergenerational way is an integral part of our corporate policy. Social responsibility towards employees and the protection of all resources necessary for production is both a challenge and a voluntary commitment. Appropriate measures are implemented in all areas – from product development and the production process to use and disposal by the consumer. This includes minimising waste and emissions. Great progress has already been made in this area. Many UHU products are solvent-free and the manufacturing generates hardly any waste. In the future, we will continue our efforts with the greatest commitment in terms of sustainability in the four areas of quality products, innovative packaging, clean production and committed and motivated people.
Porous materials can absorb moisture. Some adhesives or sealants contain moisture. If these adhesives or sealants are used, one of the materials to be bonded must always be porous.
Examples of porous materials: plasterboard, untreated wood as well as untreated concrete and bricks, paper, cardboard, cement, etc.
Examples of non-porous materials: treated (primed or painted) wood, concrete and brick, building boards such as MDF, plywood and triplex plywood panels, hard and soft plastics, polystyrene foam (Tempex, EPS, XPS), metal, glass, etc.
The best way to do this is to use a two-component epoxy adhesive such as UHU PLUS Quick-Strength Adhesive.
If the pieces fit perfectly together (without gaps), you can also use a superglue (gel).
However, epoxy glue creates the best adhesive strength. It is also water and dishwasher safe.
A DoP is a Declaration of Performance. It describes how the product has been tested and indicates the level of performance achieved by the product.
Montagekit is a universal and elastic glue for holding materials to walls, floors and ceilings. The glue is also used for filling and therefore fills irregularities in materials, meaning joints that do not fit together perfectly can also be firmly bonded. The glue supports the bonded material and absorbs the displacements of the materials so that they do not separate.
The UHU Stic ReNATURE is the world's first glue stick with a container made largely of bioplastic. In contrast to the usual use of petroleum-based materials, polyethylene made from renewable raw materials ("Bio-PE") is now the main component. UHU Stic ReNATURE is the result of many years of intensive research and development. By replacing fossil raw materials with renewable ones, CO2 emissions and the consumption of fossil raw materials are sustainably reduced. At the same time, UHU does not compromise on quality in terms of function and durability of the product.
It's important to close the package as best you can. After use, remove the applicator from the cartridge, place a piece of plastic or aluminium wrap over the opening of the cartridge and screw the applicator back on. The applicator also has a cap. You can also put a little film between the applicator and the cap. In addition, it is also important to store the glue in a cool, dry place.
On 1 July 2014.
Closures will be covered by this regulation from July 2014.
The container of the UHU Stic ReNATURE contains approx. 58% renewable raw materials in the form of polyethylene, which is obtained from sugar cane. The cultivation and further processing of the sugar cane into bio-PE takes place in São Paulo State in Brazil. Sugar cane is considered to be the most land and energy efficient raw material among agricultural crops. Genetically modified plants are not used in the production of the raw materials for the UHU Stic ReNATURE .
If plastic from fossil sources is used for energy at the end of its life cycle, i.e. incinerated, additional CO2 is released into the atmosphere – this exacerbates the greenhouse effect and endangers our climate. When a 100% bio-based plastic is burned, the CO2 released is of biogenic origin, i.e. only CO2 bound in the material while the plant is growing and removed from the atmosphere is released again. UHU has commissioned the Denkstatt Institute to calculate the CO2 footprint and fossil resource consumption of the new ReNATURE packaging compared to conventional plastic packaging based on the ISO 14044 Life Cycle Assessment. A CO2 saving of 46% was calculated. In addition, the reduction in the consumption of fossil resources amounts to 48%. Our new bioplastic container based on PE from sugar cane therefore contributes to climate and resource protection.
With their advantages in terms of climate protection, resource conservation and still usable potential, bioplastics are of central importance for the European Commission's Bioeconomy Strategy 2020. At the national level, too, associations and institutions such as the Federal Ministry of Agriculture, Food and Consumer Protection or the Agency for Renewable Resources agree that the use of renewable raw materials is the only alternative to today's oil industry in the long term. A true circular economy is only possible with renewable raw materials. We are very positive about recycling, but the best thing is a recyclable product made from renewable raw materials! UHU is working intensively to find the most ecologically sensitive processes and to make products more environmentally friendly. And wherever possible, UHU already uses recycled cardboard and blister hoods for carton and blister packaging.
Brazilian bioethanol from sugar cane is indisputably one of the most efficiently produced agricultural commodities. Its excellent climate and environmental balance is therefore the best in an international comparison. Brazil has been promoting this development for decades and has enforced high social and environmental standards for sugar cane cultivation. These environmental and social standards also meet the relevant EU requirements.
The quality of the products and their packaging is a top priority for UHU - we place the highest demands on the materials for the components. In addition, the raw materials necessary for the production of the UHU Stic ReNATURE should be available in sufficient quantities and at the same time at a reasonable cost. The bio-based plastics available today are not always able to meet our high quality requirements. Thanks to intensive research in in recent years, we already achieve a share of 58% renewable raw materials in plastic housings – making them unique in the world. In order to increase the percentage even further, it is regularly checked where and to what extent the use of bio-based plastics meets the high demands that UHU places on its products.