7 mistakes in working with foam adhesives – expert advice from Tytan Professional
Foam adhesives have revolutionized construction. They make many construction jobs lighter and simpler compared to traditional methods. However, it is important to remember a few important rules when working with foam adhesives. This will make every surface your ally, and you will create joints as durable as your reputation. Check out the 7 most common mistakes you can make when working with foam adhesives and be ready for anything.
Foam adhesive is a professional one-component polyurethane adhesive with extremely fast curing time. It is characterized by significantly higher adhesion and stronger grip compared to traditional adhesives. It is available in the form of an innovative foam, ideal for convenient and quick applications.
Foam adhesives are sold in cans and are applied with a special foam gun. The fine-cellular and regular structure of foam adhesive provides excellent adhesion, as well as high deformation resistance and strength. To take advantage of all the benefits of foam adhesive, it is necessary to thoroughly learn all the ins and outs of application. In order not to learn from our own mistakes, we will use the sins that others have committed and learn from them!
Table of contents
- Mistake No. 1: Forgetting to clean the surface from dust
- Mistake #2: Exposing foam adhesive to UV radiation
- Mistake No. 3: unnecessary wetting of the substrate and foam adhesive
- Mistake No. 4: Insufficient product preparation time
- Mistake No. 5: Lack of good planning of work sequence
- Mistake No. 6: Not following the manufacturer's instructions
- Mistake No. 7: Lack of trainings
Mistake No. 1: Forgetting to clean the surface from dust
Vacuuming and degreasing is your secret construction technique. Failure to dust off surfaces before applying foam adhesive is one of the most common mistakes that significantly affects the quality and durability of the final bond. Surfaces on which foam adhesive is to be applied may be covered with dust, dirt, grease or other contaminants that definitely reduce the product’s adhesion.
Proper surface preparation is key to ensuring that the foam adhesive can fully bond to the material. Without removing contaminants, the foam adhesive layer may not adhere evenly, leading to weak spots in the bond. This increases the risk that the joined parts may peel off under mechanical stress or changes in weather conditions. Thoroughly cleaning and dusting the surface before applying the foam adhesive is an important step that ensures the performance and durability of any joint.
Mistake #2: Exposing foam adhesive to UV radiation
UV radiation has adverse effects on many materials, including polyurethane foam adhesives. Foam adhesives are generally resistant to many environmental factors, but prolonged exposure to UV light can lead to degradation of their chemical structure.
The effect is to weaken the mechanical properties of the adhesive, such as flexibility, adhesion and strength. UV radiation causes polyurethane bonds to break down, which can result in color change, hardening and even crumbling of the material. Foam adhesives outdoors are most often/most of the time perfectly protected from sunlight by the materials they were used to adhere to, such as facade/roof insulation, boards or tiles. In the absence of such protection and possible exposure to light, foam adhesive can be protected by painting or using special protective coatings that will block UV rays.
Mistake No. 3: unnecessary wetting of the substrate and foam adhesive
Sometimes contractors confuse foam adhesives with sealing foams, using the same application methods. Sealing foams actually require spraying with water for proper expansion and curing, but foam adhesives have a completely different formulation. Foam adhesives do not need additional moisture beyond that found in the air. Improper curing, displacement of glued parts, blistering and even structural weakening of the adhesive after application – these are the effects of exposing the product to excessive moisture through additional wetting of the surface or foam adhesive.
To ensure optimal conditions for application and curing of the foam adhesive, it is recommended not to wet the substrate and the foam adhesive braid and to carry out work in a dry environment. Care should be taken to ensure that the application site is protected from excessive moisture both during and after work.
Excessive moisture can significantly affect the properties and effectiveness of foam adhesive. In areas of high humidity, foam adhesive can absorb moisture from the air, leading to expansion and structural weakening. Prolonged exposure to moisture can also contribute to the growth of mold and mildew, which further degrades the foam adhesive. To ensure optimal conditions for application and curing of the foam adhesive, it is recommended that work be carried out in a dry environment. Care should be taken to ensure that the application site is protected from excessive moisture both during and after work.
Mistake No. 4: Insufficient product preparation time
It’s only 30 and up to 30 seconds when you have to vigorously shake the can before application. This simple but crucial step is to ensure that all the chemical components in the adhesive are thoroughly mixed. Polyurethane foam adhesives consist of different components that delaminate during storage. Without thorough shaking, these components may not combine properly.
Such a situation leads to a number of problems, for example, the active ingredients may remain unused, which will weaken the curing effect of the adhesive; unevenly mixed foam adhesive may make you need more product to achieve the desired effect, leading to faster material consumption and increased labor costs. To avoid these problems, always shake the vertically held can thoroughly and vigorously.
Mistake No. 5: Lack of good planning of work sequence
Every product, including foam adhesives, has manufacturer-specified times when the materials must be installed to achieve the best adhesion and durability of the bond. Sticking too late can lead to a number of problems that will negate the effect of the work and increase costs. Foam adhesives are designed to cure quickly, which requires precise handling according to the times specified on the package.
Usually this time is a few minutes and depends on the type and purpose of the product. If the parts are joined after the open time (that is, when the skin has appeared on the foam adhesive), the adhesive may partially harden and lose its adhesive properties, resulting in a weaker bond. Optimum adhesion and chemical bonding between the adhesive and the material is only possible when the foam adhesive is still in the appropriate viscosity phase.
To avoid these problems, it is important to check the working time on the package and prepare for the foams. Preparing all materials and tools before starting the application will ensure that you are ready to go as soon as the foam adhesive is applied. In addition, following the manufacturer’s recommendations on how long to work with the product is key to the durability of the bond.
Mistake No. 6: Not following the manufacturer’s instructions
Foam adhesives, like other chemical products, have specific temperatures at which they should be applied. These temperatures are carefully specified on the product label. Applying foam adhesive at temperatures that are too high or too low can lead to curing problems.
Temperatures that are too low can cause the foam adhesive to become too thick or even freeze, making application difficult and resulting in poor bonding, while temperatures that are too high can speed up the curing process, not allowing enough time for proper placement of the parts to be glued.
It is also a mistake to use one foam adhesive for everything. The portfolio of products from Tytan Professional is large enough to take into account the characteristics of each type of construction work. Choosing the right product for an application not only ensures better adhesion and durability, but also helps avoid problems associated with inadequate bonding or material degradation.
Mistake No. 7: Lack of trainings
The world of construction and material technology is constantly evolving, and manufacturers are launching new products that are better suited to modern requirements and working conditions. Therefore, it is important for contractors to regularly update their knowledge and keep up with technological innovations and changes in product specifications.
The trainings not only provide an understanding of the properties and applications of various products, but also teach the proper application techniques that are key to ensuring the durability and effectiveness of the work completed. Tytan Professional offers a series of free webinars that are an excellent knowledge resource for professionals. These educational sessions are led by experienced experts and trainers who share not only theoretical knowledge, but also practical tips and answers to questions. An investment in education is an investment in one’s own development, efficiency and professionalism, which translates into quality work and customer satisfaction.