Help & FAQs

Compression tape permanently seals connection and movement joints airtight and rainproof. In window and door construction, as well as in the assembly of prefabricated components, it is the standard for reliable, heat-insulating joint sealing.

Pre-compressed sealing tape (Kompriband) usually expands to 3 to 5 times its original thickness. For example, a tape with an initial thickness of 3 mm will expand to up to 15 mm. The exact maximum expansion can be found on the packaging or the data sheet.

However, for a professional and rain-proof joint, the tape should never expand to its absolute maximum. It must always remain compressed by approximately 20% to 50%. The choice of tape must therefore precisely match the joint width.

**Kompriband – Joint Sealing Tape for Professional Applications**

Kompriband (compressible tape or joint sealing tape) is a pre-compressed, impregnated foam tape. After installation in a joint, it slowly expands and permanently seals against driving rain, wind, heat loss, and sound. It is the standard material for installing windows and doors.

**Properties**

Material: Polyurethane soft foam with acrylate dispersion impregnation. Works purely mechanically, does not bond chemically, and is weather-resistant.

Functionality: Supplied rolled up and expands independently in the joint after unrolling.

Classification: Classified according to DIN 18542. BG 1 offers maximum driving rain resistance and UV resistance; BG 2 is designed for protected areas.

Area of application: Mainly for sealing connection joints between masonry and window/door frames.

**Processing – Step by Step**

Prepare joints: Ensure they are dry, dust-free, and grease-free.

Trim tape ends: Cut off the first and last piece of the roll – these are too compressed and will not expand properly.

Butt joints: The tape must not be bent around corners. Always butt join, otherwise leaks will occur.

Install without stretching: Do not tension the tape when adhering it.

Remove overhang: After expansion, cut off any protruding material.

These tapes are waterproof and self-adhesive – ideal for professional joint sealing. They are mainly used in the construction industry, especially for window and door installations, to ensure reliable sealing.

The choice between pre-compressed sealing tape and PU foam depends on the substrate and joint characteristics. Often, both materials are used in combination.

If you are considering purchasing a sealing tape, there are some important reasons you should take into account. Sealing tapes are sealing products widely used in the construction industry and can be applied in various applications. Here are some reasons why buying a sealing tape can be a good decision:

1. Sealing: Sealing tapes primarily serve to seal gaps and joints. They are often used in windows, doors, facades, and other building structures. By using a sealing tape, you can ensure that no unwanted air or water ingress occurs.
2. Energy Efficiency: Good sealing plays a crucial role in a building's energy efficiency. By using sealing tapes, you can minimize heat loss and improve energy efficiency. This can result in lower energy costs in the long run.
3. Sound Insulation: Sealing tapes can also help reduce noise and achieve better sound insulation. This is particularly important in residential areas or office buildings where a quiet environment is desired.
4. Durability: Sealing tapes are typically made from high-quality materials and offer high resistance to weather conditions and other external influences. This makes them durable and gives them a long service life.
5. Versatility: Sealing tapes are available in various sizes and designs to meet different requirements. They can be selected according to your needs to achieve the desired seal.

When purchasing a sealing tape, you should pay attention to the product's quality. It is advisable to choose a reputable and reliable company that offers high-quality sealing tapes. Also, compare prices and read customer reviews to ensure you receive a product that meets your requirements.

Overall, buying a sealing tape can be a smart investment to improve your building's sealing, energy efficiency, sound insulation, and durability. Take the time to make the right choice and benefit from the many advantages a sealing tape can offer.

A pre-compressed sealing tape typically has a shelf life of 36 months from the date of manufacture when stored under proper conditions. This information is crucial to ensure that the pre-compressed sealing tape maintains its optimal performance.

Pre-compressed sealing tapes are often used to seal joints and gaps, especially in building and construction projects. They consist of an elastic material that deforms under pressure, thus ensuring an effective seal.

For a pre-compressed sealing tape to fulfill its function, it is important that it is stored in a dry and cool environment. High temperatures can impair the elasticity of the tape and lead to reduced performance. Therefore, it is advisable to protect the pre-compressed sealing tape from direct sunlight and heat sources.

The shelf life of a pre-compressed sealing tape can also depend on the quality of the material. It is important to choose high-quality products from trusted manufacturers to ensure that the tape achieves the desired lifespan.

If you intend to use a pre-compressed sealing tape that has been stored for some time, you should carefully inspect the product before application. Look for signs of deterioration such as cracks, discoloration, or hardening. If the tape appears damaged or has lost its original shape, you should no longer use it.

Overall, the shelf life of a pre-compressed sealing tape depends on various factors, including storage conditions and product quality. It is important to consider these factors to ensure that the pre-compressed sealing tape maintains its optimal performance and can be used for the desired period.

BG1 and BG2 are two different classifications of sealing tapes, offering different properties depending on the requirements of your project.

The main difference between BG1 and BG2 lies in their weather resistance and airtightness. BG1 sealing tapes are resistant to driving rain up to a pressure of 600 Pa, making them ideal for weather-exposed applications. They are UV-resistant, meaning they retain their effectiveness even with continuous exposure to sunlight.

On the other hand, BG2 sealing tapes are resistant to driving rain only up to a pressure of 300 Pa and do not offer permanent UV resistance. This means they may not be the best choice for applications where they are exposed to direct sunlight.

When choosing between BG1 and BG2, you should therefore consider the specific requirements of your project. If you have a weather-exposed project and need a durable solution that can also withstand UV rays, you should opt for BG1 sealing tapes. However, if permanent UV resistance is not required and protection against driving rain is sufficient, BG2 sealing tapes can be a suitable option.

It is also important to note that correct installation and maintenance of the sealing tapes play a crucial role in their effectiveness. Ensure they are properly installed and regularly checked to guarantee the best possible performance.

In conclusion, there is no general answer as to whether BG1 or BG2 is better. The choice depends on the specific requirements of your project. It is advisable to consult a professional to make the right decision and find the best possible solution for your needs.

Yes, craft businesses are obligated to carry out window installation according to RAL (German Institute for Quality Assurance and Certification e.V.). RAL installation is a standardized procedure that ensures windows are installed professionally and optimal functionality is guaranteed.

RAL installation offers numerous advantages. Firstly, it ensures high energy efficiency by preventing thermal bridges and thus avoiding energy loss. This can reduce heating costs and increase living comfort. Secondly, RAL installation guarantees a high level of window airtightness, which improves protection against drafts and moisture. This also positively influences the indoor climate and prevents mold formation.

It is important to note that RAL installation is not only mandatory for craft businesses but also for private individuals who wish to install their windows themselves. By adhering to RAL installation guidelines, problems such as leaks, cold bridges, or insufficient sound insulation can be avoided.

However, there is an exception to the RAL installation obligation. If you have agreed with the craft business on a non-standard installation, RAL installation can be waived. In this case, however, you should consider that a non-standard installation may lead to problems and does not offer the same quality standard as RAL installation.

In summary, RAL installation is mandatory for craft businesses to ensure professional and high-quality window installation. Adhering to RAL guidelines offers numerous advantages such as energy efficiency, airtightness, and protection against moisture. However, it is possible to waive RAL installation if a non-standard installation has been agreed upon with the craft business.

We totally get it - we sometimes change our minds too! As much as we'd love to: Once an order has been placed, we currently cannot change or cancel it. We hope to be able to offer a cancellation window in the future. If the item doesn't fit or you don't like it, you can simply exchange it for another model or return it for a refund.

We look forward to hearing from you! Please feel free to contact us with any questions, concerns, or feedback. We guarantee a response within 48 hours. Please note, however, that inquiries received on a Friday will only be answered on the following Monday – though an earlier response is certainly possible.

We ship worldwide – with the exception of countries under international sanctions.

Standard shipping usually takes 1-3 days. Next business day shipping is available for all domestic orders (at an additional charge). International shipping times depend on the products and destination (estimated duration will be shown at checkout).

Items must be returned within 14 days of receipt of your order. Returns must be in the same condition as the items were received.

Refunds will be processed and issued within 1-2 days of receipt of the items.

The smell of fresh silicone depends on its curing process. During this phase, the silicone emits a characteristic odor. Once the silicone is fully cured, the smell subsides.

It is important to ensure good ventilation during the curing process to largely avoid more intense odors. This can be achieved by opening windows or using fans. Good ventilation also helps minimize potential health effects from inhaling the fumes.

The duration of the odor varies depending on the type of silicone and environmental conditions. Generally, it takes a few hours to several days for the odor to completely disappear. However, with certain types of silicone, the odor may persist longer.

It is important to note that the smell of fresh silicone is not harmful as long as it is used in well-ventilventilated areas. However, if you are sensitive to odors or have health concerns, it is advisable to leave the room or wear a protective mask during the curing process.

In summary, the smell of fresh silicone lasts as long as it is in the curing process. Once curing is complete, the smell stops. Good ventilation during the curing process helps to avoid more intense odors and minimize potential health effects.

No, according to the German Federal Institute for Risk Assessment (BfR), silicone is not harmful to health. The BfR has determined that there are generally no concerns regarding the use of silicone in the manufacture of food contact materials.

Silicone is a versatile material used in many areas of daily life. It is frequently used in the food industry to produce kitchen utensils such as bakeware, spatulas, and silicone baking mats. These products are popular because they are durable, heat-resistant, and easy to clean.

The BfR has conducted extensive studies to assess the safety of silicone. Various aspects were investigated, including the migration of components from silicone into food, the toxicity of silicone, and potential health effects. The results showed that silicone poses no health risks when used in accordance with applicable regulations and guidelines.

However, it is important to note that not all silicones are the same. There are different types of silicones with different properties. The BfR has specifically examined silicones used for food contact materials and found them to be harmless. It is advisable to purchase products that comply with the relevant safety standards and are specifically approved for contact with food.

Despite the positive assessment by the BfR, it is always advisable to exercise caution and use products responsibly. It is recommended to follow the manufacturer's instructions and regularly check silicone products for damage or wear. In case of doubts or concerns, it is best to consult a specialist.

Overall, it can be said that, according to current BfR findings, silicone is not harmful to health and can be used safely. It offers a practical alternative to other materials and has proven its worth in the food industry.

When it comes to sealing joints, you have various options available. Two of the most common materials are silicone and acrylic. But when should you use silicone, and when is acrylic the right choice?

Acrylic is a good option for joints that are not subject to movement and will not get wet. For example, if you have a joint that needs or can be painted over, acrylic is the right choice. It is easy to work with and smooths well. It also adheres well to various surfaces such as wood, concrete, or plaster.

On the other hand, silicone is ideal for damp rooms and movable substrates. For example, if you want to seal a joint in your bathroom or kitchen, you should use silicone. Silicone is water-repellent and flexible, which means it can adapt to the movements of the substrate without tearing or breaking. It protects against moisture and prevents water from penetrating the joints.

It is important to note that both silicone and acrylic have certain advantages and disadvantages. Acrylic is easier to remove and paint over, while silicone has a longer lifespan and better protects against moisture. Depending on the requirements of your joints, you can make the right choice.

In summary, acrylic is suitable for immovable and non-damp joints that may need or can be painted over. Silicone, however, is used in damp rooms or with movable substrates to ensure a long-lasting seal.

Hopefully, I was able to help you with your question! If you need further information, please do not hesitate to ask.

Joint cracks can occur for various reasons, including moisture, significant temperature fluctuations, or even UV radiation. Another reason for cracks in the joint can be the movement of the individual components. However, processing errors are also often responsible.

Moisture can severely stress a joint and lead to cracks. If water penetrates the joint and freezes, it expands, exerting pressure on the joint walls. This can cause the joint to break open and cracks to form.

Significant temperature fluctuations are another factor that can lead to cracks in joints. When materials expand in heat and then contract again in cold, stresses are created that can lead to cracks. This can be a particular problem with concrete joints.

UV radiation can also play a role. UV rays can weaken and embrittle materials over time. This can cause joints to lose their elasticity and crack.

Furthermore, movements of individual components can lead to cracks in the joints. For example, if a building shifts due to settling or ground movements, the joints can come under pressure and crack.

Last but not least, processing errors can also lead to joint cracks. For example, if not enough expansion joints are installed or the material is not processed correctly, cracks in the joints are often inevitable.

Minor damage to the joints can often be repaired. Special repair methods are available for this, in which the cracks are filled and the joint is restored. However, for larger cracks, a complete replacement of the joint is usually necessary.

It is important that joints are regularly inspected and, if necessary, repaired to prevent greater damage. Professional advice from an expert is recommended here to determine the cause of the cracks and to take appropriate measures to remedy the problem.

Choosing the right primer is an important step to ensure your project is successful. There are several key aspects to consider when it comes to selecting the correct primer.

First, you should consider the sealant and the substrate. Each sealant has specific requirements for the type of primer that should be used. A primer is a base coat applied to the substrate to improve the adhesion of the sealant. It is important to ensure that the primer is compatible with both the sealant and the substrate.

To make the right choice, I recommend consulting the technical data sheet of our products. In this data sheet, you will find a priming chart that can help you select the correct primer. The chart contains information about which primer is recommended for which sealant and substrate.

When choosing the primer, you should also consider the application area and environmental conditions. Some primers are better suited for indoor applications, while others are better for outdoor applications. Temperature and humidity conditions can also influence the choice of primer.

Another important factor in primer selection is the drying time. Depending on the project schedule and requirements, it may be important to choose a primer with a short drying time.

It is also a good idea to consult a professional if you are unsure which primer is best for your project. An expert can help you make the right choice and ensure you achieve the best results.

Overall, it is important to choose the right primer based on the sealant and the substrate. Consult the technical data sheet of our products and also consider the application area, environmental conditions, and drying time. If you are unsure, ask an expert for advice. With the correct primer choice, you can ensure your project is successful.

Silicone is an extremely versatile material used in many areas. It is known for its permanently elastic properties, making it excellent for sealing joints in the bathroom, kitchen, and expansion joints.

The use of silicone joints in the bathroom is particularly recommended, as they help prevent moisture from penetrating walls or floors. This is especially important to prevent mold growth and damage to the building structure. Silicone can easily be used to create joints around the shower or bathtub to effectively seal them, thereby ensuring the longevity and hygiene of the bathroom.

But silicone joints can also be extremely useful in the kitchen. They help prevent water and grease splashes and make it easier to clean countertops and tiles. Sealing joints with silicone prevents dirt and bacteria from getting into the gaps, which improves hygiene in the kitchen.

In addition, silicone can also be used in other rooms such as your own laundry room. Here, it provides an effective seal for joints around sinks, washbasins, or other sources of moisture. This prevents water or cleaning agents from getting into the walls or floors and causing damage.

Another advantage of silicone is its easy application. Anyone can easily create silicone joints with a silicone cartridge and a silicone gun. However, it is important to ensure that the surface is clean and dry before applying the silicone to ensure optimal adhesion.

In summary, due to its permanently elastic properties, silicone is ideal for sealing joints in the bathroom, kitchen, and expansion joints. It protects against moisture, improves hygiene, and facilitates cleaning. Silicone can easily be used to create silicone joints and thus effectively seal rooms.

Discoloration of silicone joints can have various causes. There are a number of environmental influences that can cause the color of the joints to change. Pollen and road dirt are common causes of such discolorations. These particles settle on the surface of the joints and can change their color.

Another reason for the discoloration of silicone joints can be incompatibility with the processed materials. For example, if certain coatings or backings do not harmonize well with the silicone, this can lead to discoloration.

Limescale is also a common cause of yellowish discoloration. If the water that comes into contact with the joints has a high lime content, this can cause the silicone to turn yellowish over time.

Brown or black spots on the silicone joints can indicate dirt or mold. These contaminants can accumulate on the joints over time and lead to unsightly stains.

It is also important to note that certain chemicals in cleaning agents can cause discoloration of the silicone. If you use cleaning agents that are not recommended for use on silicone, this can cause the joints to discolor.

To avoid discoloration of silicone joints, you should clean the joints regularly. Use suitable cleaning agents that are specially designed for cleaning silicone. Make sure not to use aggressive chemicals, as these can damage the silicone.

In summary, discoloration of silicone joints can be caused by environmental influences, incompatibility with other materials, limescale deposits, dirt and mold, and the use of unsuitable cleaning agents. By regular cleaning and the use of suitable care products, you can minimize the discoloration of your silicone joints.