Rubber cork

You may wonder why you should I need this product… What seems like a weird mixture of two materials is actually a new material with numerous important features such as e.g. durability and softness. The properties of rubber and cork really complement each other creating final product. First and foremost, it’s a really environmentally-friendly product. Manufacturers create it from the bark of cork oak tree and a clean formula for rubber.

What does it offer?

The high mechanical strength and dimensional stability of the rubber works well with the compressibility and elasticity of the cork. These materials, when combined, create something wonderful and unique, which is especially used as an underlay for floors.

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What is gumcork?

The rubber cork is a mixture of cork granules and rubber bonded with PU. It is produced in a multi-stage process during which natural cork is combined with rubber granulate under the influence of a PU binder. Rubber cork is considered a natural and recyclable sealing material, mainly due to its ecological and environmentally friendly production. Due to the high rubber content, this highly flexible and durable material can be classified as an elastomeric seal.

Properties of rubber cork as a sealing material

Although rubber cork comes in different mixing ratios, the material has many essentially identical properties. The cork-rubber granulate mixture is characterized by good resistance to acids and weather conditions and limited resistance to ozone and alkalis. Compared to other sealing sheets, rubber plug is abrasion-resistant due to its composition. The material is also characterized by high density and mechanical strength, which allows it to isolate air and sound noise. For this reason, this material is used as a sealing material that dampens vibrations, among others. for impact sound insulation. Another advantage is the material’s compressive strength and dimensional stability.

Advantages and properties of the material at a glance

Good acid resistance
Good resistance to weather conditions
Conditional resistance to ozone and alkalis
Abrasion and pressure resistant
Thermally insulating
Acoustic and thermal insulation

To sum up, the rubber cork is resistant to various thermal and mechanical loads. This makes the sealing material suitable for a wide range of applications as a sound-absorbing and thermally insulating sealing material.

Areas of application of rubber-cork seals

Gasket material is used in many areas and industries. Material available in rolls. As a manufacturer of gaskets, if necessary, we cut them primarily into flat gaskets.

This material is used as impact sound insulation. Due to its high specific weight and high degree of insulation, the sealing material can also be used as thermal insulation. Due to its dimensional stability and high elasticity, rubber cork evens out uneven floors and can therefore be used as an underlay for almost all floors.

Installation of a rubber cork underlay
Tools and materials:

Rubber cork underlay: Make sure the underlay is appropriate for the type of flooring and is of the desired thickness for sound insulation and shock absorption.

Measuring Tape: For accurately measuring and cutting the backing.

Utility knife or scissors: To cut the backing to fit the dimensions of the room.

Glue or tape: Depending on the specific product, you may need glue or tape to secure the joints.

Installation steps:

Prepare the substrate:
Make sure the substrate is clean, dry and even. Remove any contamination and irregularities.

Acclimatization of the substrate:

Allow the primer to acclimate to the room for the recommended time, usually 24 to 48 hours.

Expand the backing:

Roll out the rubber cork sheet over the entire floor, making sure it reaches the walls with a slight overlap.

Crop to fit:

Use a tape measure to determine the dimensions of the room and cut the pad accordingly with a stationery knife or scissors.

Seam installation (if required):

Fixing to the ground:
You will need to use a flooring adhesive that is suitable for the underlay material.

Install the floor:

Once the rubber cork pad is securely in place, you can begin installing the flooring material according to the manufacturer’s instructions.

Trim the excess:

Trim excess underlayment around the edges of the room with a knife.


If necessary, install baseboards or trim to cover any gaps at the edges.