Installers / Products

Selected floors:

Specifying Guidance: All >> Wear and Tear

Ensure the specific floor has the ability to withstand wear and tear in its specified application area. Some areas experience higher floor traffic than normal. In such cases attention must be paid to the product quality and surface treatment.

The anticipated floor traffic must always govern what product should be specified in an area. We recommend using oiled surfaces in areas with more extreme wear and tear, and always in conjunction with the recommended maintenance programme. Oiled surfaces are easier to maintain in such areas and will retain their quality and appearance if serviced on a regular basis. In other areas the choice of surface treatment is more flexible and both oiled and lacquered surfaces can be used.

Select an application to see more information regarding the specific requirements for that area.

Underfloor Heating

All Kährs floors, except Beech and Hard Maple, are suitable for use with underfloor heating. The electrical underfloor heating system must deliver no more than 80 W/m2, evenly distributed.

In a normally insulated house, with a properly functioning underfloor heating system, the temperature of the floor surface is generally 2°C higher than the room temperature. In a hot-water underfloor heating system, the flow temperature is usually 7–12°C higher than the floors’ surface temperature and must, therefore, never exceed 39°C.

For any system, the surface temperature of the floor must never exceed 27°C. This applies even next to and above radiator pipes, above pipe runs and under carpets, furniture etc.

Always follow the instructions and recommendations given by the supplier of the heating system.

Installation Methods

Kährs floors can be installed floating or glued-down (also nailed-down if the floor has a tongue & groove joint).

Floating installation

This method is the most cost-effective way of installing the floor. Sub-floor requirements are less demanding. However, the sub-floor must be dry, clean, flat and solid. We recommend that a 0,2 mm PE-film with 200 mm overlap is placed on the sub-floor as moisture protection. An intermediate layer can also be installed on any film to reduce footstep noise. The intermediate layer, e.g. Kährs foam or lump paper, should be installed edge to edge. When installing a Kährs wood floor on an organic subfloor you must make sure that the floor covering including subfloor construction never contains more than one layer of moisture barrier. An alternative is to use Kährs Tuplex, which combines both moisture protection and sound installation. In this case no other intermediate layer should be used.

The humidity of the room must not exceed 60% RH and both boards and the room shall be heated to at least 18° C.

Glue-Down Installation

The preparation and quality of the subfloor, in combination with the correct type of glue, are crucial for a well functioning surface. The demands and recommendations given here must always be followed in conjunction with instructions from the supplier of glue and preparation materials.

The following steps must always be taken for successful installation:

 

Acclimatisation

The wood flooring must be acclimatised prior to installation. If the wood boards have not achieved equilibrium in moisture content with their environment then excess expansion/contraction might occur.

Working conditions

The relative air humidity in the room must be between 30% and 65%. Too high air humidity leads to water absorption and causes expansion. All works which add significant quantities of water to the environment around the floor e. g. painting and wallpapering must be finished prior to wood floor installation.


See also Subfloor requirements for appropriate preparation prior to installation.

Select an application to see more information regarding the specific requirements for that area.

Subfloor Requirements

A floor can only be as good as the subfloor allows. Here are a few things to bear in mind regarding the substrate.

Substrate temperature

During application and until the glue is fully cured, the substrate temperature must be 15°C, or +20°C when applied in combination with underfloor heating.

Substrate quality

The substrate must be clean and dry, homogenous and even. It must also be free from oil, grease, dust and loose or friable particles. Paint, cement laitance and any other contaminants must be removed.

Subfloor evenness: (2m length +/- 3 mm)

Substrate preparation

Concrete and cementitious screeds must be mechanically prepared as necessary to achieve the desired substrate quality, then thoroughly vacuumed. On strongly absorbent cementitious substrates, use a primer or dust binder.

Substrate moisture content

Permissible substrate moisture content without underfloor heating is 2.5% CM for cementitious substrates (approximately 4% Gravimetric percent by weight.) Permissible substrate moisture content with underfloor heating is 1.8% CM for cementitious screed (approximately 3% Gravimetric percent by weight.)

Concrete/cement screeds

Must be ground and thoroughly cleaned with an industrial vacuum cleaner.

Anhydrite screeds/Anhydrite floating screeds

Must be ground and thoroughly cleaned with an industrial vacuum cleaner shortly before bonding starts.

Wood/gypsum boards (e.g. chipboard, plywood)

Glue/screw the boards to the substructure. They must be fixed to the substrate.

Select an application to see more information regarding the specific requirements for that area.

Maintenance

Kährs floors are factory lacquered or oiled. For products with oiled surfaces we recommend the application of a fresh layer of oil instantly after installation, to enhance the durability of the floor. This is normally performed after the cleaning of the surface, before the handover of a project. This preventive maintenance should be done prior to installing furniture. For products with a lacquered surface, the need for additional coating is normally limited to areas with extreme use or areas with very heavy foot traffic.

Select an application to see more information regarding the specific requirements for that area.

Specifying Guidance: Residential >> Wear and Tear

Ensure the specific floor has the ability to withstand sufficient wear and tear within a specified space. The kitchen and main entrance of the home are normally critical areas, with more intense use than others. For such areas we recommend a floor with a 15 mm minimum thickness.

General recommendations:

  Kährs Supreme Kährs Supreme Kährs Supreme Kährs Supreme Kährs Original/
Avanti
Kährs Original/
Avanti
Kährs Spirit Kährs Spirit Kährs Linnea Kährs Linnea Kährs
Activity
Floor
20 mm 15 mm 15 mm 15 mm 15/13mm 15/13mm 10 mm 10 mm 7 mm 7 mm 30 mm
Oil Oil Lacquer High gloss lacquer Oil Lacquer Oil Lacquer Oil Lacquer Lacquer
RESIDENTIAL
Kitchen                      
Hallway                      
Living room                      
Bedroom                      

 

    Recommended
    If the wear and tear is equivalent to domestic use, installation is OK if a well defined maintenance program is followed.
    NOTE! If the wear is heavy in the area we do not recommend installation.
    Not applicable
Underfloor Heating

All Kährs floors, except Beech and Hard Maple, are suitable for use with floor heating. The electrical underfloor heating system must deliver no more than 80 W/m2, evenly distributed.

In a normally insulated house, with a properly functioning underfloor heating system, the temperature of the floor surface is generally 2°C higher than the room temperature. In a hot-water underfloor heating system, the flow temperature is usually 7–12°C higher than the floor’s surface temperature and must therefore, never exceed 39°C.

For any system, the surface temperature of the floor must never exceed 27°C. This applies even next to and above radiator pipes, above pipe runs and under carpets, furniture etc.

Always follow the instructions and recommendations given by the supplier of the heating system.

Installation Methods

Kährs floors can be installed floating or glued-down (also nailed-down if the floor has a tongue & groove joint.)

Floating installation
This method is the most cost-effective way of installing the floor. Sub-floor requirements are less demanding. However, the sub-floor must be dry, clean, flat and solid. We recommend that a 0,2 mm PE-film with 200 mm overlap is placed on the sub-floor as moisture protection. An intermediate layer can also be installed on any film to reduce footstep noise. The intermediate layer, e.g. Kährs foam or lump paper, should be installed edge to edge. When installing a Kährs wood floor on an organic subfloor you must make sure that the floor covering including subfloor construction never contains more than one layer of moisture barrier. An alternative is to use Kährs Tuplex, which combines both moisture protection and sound installation. In this case no other intermediate layer should be used.

The humidity of the room must not exceed 60% RH and both boards and the room shall be heated to at least 18° C.

Glue-down installation
The preparation and quality of the subfloor, in combination with the correct type of glue, are crucial for a well functioning surface. The demands and recommendations given here must always be followed in conjunction with instructions from the supplier of glue and preparation materials.

The following steps should always be taken for successful installation:

Acclimatisation
The wood flooring must be acclimatised prior to installation. If the wood boards have not achieved equilibrium in moisture content with their environment, then excess expansion/contraction may occur.

Working conditions
The relative air humidity in the room must be between 30% and 65%. Too high air humidity leads to water absorption of the wood floor and causes expansion. All works which add significant quantities of water to the environment around the floor e. g. painting and wallpapering, must be finished prior to wood floor installation.

Subfloor Requirements

A floor can only be as good as the subfloor allows. Here are a few things to bear in mind regarding the substrate.

Substrate temperature
During application and until the glue is fully cured, the substrate temperature must be 15°C, or +20°C when applied in combination with underfloor heating.

Substrate quality
The substrate must be clean and dry, homogenous and even. It must also be free from oil, grease, dust and loose or friable particles. Paint, cement laitance and any other contaminants must be removed.

Subfloor evenness: (2m length +/- 3 mm)

Substrate preparation
Concrete and cementitious screeds must be mechanically prepared as necessary to achieve the desired substrate quality, then thoroughly vacuumed. On strongly absorbent cementitious substrates, use a primer or dust binder.

Substrate moisture content
Permissible substrate moisture content without underfloor heating is 2.5% CM for cementitious substrates (approximately 4% Gravimetric percent by weight.) Permissible substrate moisture content with underfloor heating is 1.8% CM for cementitious screed (approximately 3% Gravimetric percent by weight.)

Concrete/cement screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner.

Anhydrite screeds/Anhydrite floating screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner shortly before bonding starts.

Wood/gypsum boards (e.g. chipboard, plywood)
Glue or screw the boards to the substructure. They must be fixed to the substrate.

Maintenance

Kährs floors are factory lacquered or oiled and for domestic applications there is normally no need for additional treatment during installation. It is important to know how to maintain the floor, so that it may retain its quality and appearance over time.

Specifying Guidance: Office >> Wear and Tear

Ensure the specific floor has the ability to withstand wear and tear in its specified application area.

In the application area matrix below, you will find the product quality/surface treatment we generally recommend for various areas. However, some areas experience higher floor traffic than normal, e.g a room with a photocopying machine. In such cases attention must be paid to the product quality and surface treatment.

The anticipated floor traffic must always govern what product should be specified in an area. We recommend using oiled surfaces in areas with more extreme wear and tear, and always in conjunction with the recommended maintenance programme. Oiled surfaces are easier to maintain in such areas and will retain their quality and appearance if serviced on a regular basis. In other areas the choice of surface treatment is more flexible and both oiled and lacquered surfaces can be used.

General recommendations:

  Kährs Supreme Kährs Supreme Kährs Supreme Kährs Supreme Kährs Original/
Avanti
Kährs Original/
Avanti
Kährs Spirit Kährs Spirit Kährs Linnea Kährs Linnea Kährs
Activity
Floor
20 mm 15 mm 15 mm 15 mm 15/13mm 15/13mm 10 mm 10 mm 7 mm 7 mm 30 mm
Oil Oil Lacquer High gloss lacquer Oil Lacquer Oil Lacquer Oil Lacquer Lacquer
OFFICE
Reception                      
Corridors                      
Office                      
Conference room                      

 

    Recommended
    If the wear and tear is equivalent to domestic use, installation is OK if a well defined maintenance program is followed.
    NOTE! If the wear is heavy in the area we do not recommend installation.
    Not applicable
Underfloor Heating

All Kährs floors, except Beech and Hard Maple, are suitable for use with floor heating. The electrical underfloor heating system must deliver no more than 80 W/m2, evenly distributed.

In a normally insulated house, with a properly functioning underfloor heating system, the temperature of the floor surface is generally 2°C higher than the room temperature. In a hot-water underfloor heating system, the flow temperature is usually 7–12°C higher than the floors’ surface temperature and must therefore, never exceed 39°C.

For any system, the surface temperature of the floor must never exceed 27°C. This applies even next to and above radiator pipes, above pipe runs and under carpets, furniture etc.

Always follow the instructions and recommendations given by the supplier of the heating system.

Installation Methods

Kährs floors can be installed floating or glued-down (also nailed-down if the floor has a tongue & groove joint).

Floating installation
This method is the most cost-effective way of installing the floor. Sub-floor requirements are less demanding. However, the sub-floor must be dry, clean, flat and solid. We recommend that a 0,2 mm PE-film with 200 mm overlap is placed on the sub-floor as moisture protection. An intermediate layer can also be installed on any film to reduce footstep noise. The intermediate layer, e.g. Kährs foam or lump paper, should be installed edge to edge. When installing a Kährs wood floor on an organic subfloor you must make sure that the floor covering including subfloor construction never contains more than one layer of moisture barrier. An alternative is to use Kährs Tuplex, which combines both moisture protection and sound installation. In this case no other intermediate layer should be used.

The humidity of the room must not exceed 60% RH and both boards and the room shall be heated to at least 18° C.

Glue-Down Installation
The preparation and quality of the subfloor, in combination with the correct type of glue, are crucial for a well functioning surface. The demands and recommendations given here must always be followed in conjunction with instructions from the supplier of glue and preparation materials.

The following steps must always be taken for successful installation:

Acclimatisation
The wood flooring must be acclimatised prior to installation. If the wood boards have not achieved equilibrium in moisture content with their environment then excess expansion/contraction might occur.

Working conditions
The relative air humidity in the room must be between 30% and 65%. Too high air humidity leads to water absorption of the wood floor and causes expansion. All works which add significant quantities of water to the environment around the floor e. g. painting and wallpapering must be finished prior to wood floor installation.

Subfloor Requirements

Substrate temperature
During application and until the glue is fully cured, the substrate temperature must be 15°C, or +20°C when applied in combination with underfloor heating.

Substrate quality
The substrate must be clean and dry, homogenous and even. It must also be free from oil, grease, dust and loose or friable particles. Paint, cement laitance and any other contaminants must be removed.

Subfloor evenness: (2m length +/- 3 mm)

Substrate preparation
Concrete and cementitious screeds must be mechanically prepared as necessary to achieve the desired substrate quality, then thoroughly vacuumed. On strongly absorbent cementitious substrates, use a primer or dust binder.

Substrate moisture content
Permissible substrate moisture content without underfloor heating is 2.5% CM for cementitious substrates (approximately 4% Gravimetric percent by weight.) Permissible substrate moisture content with underfloor heating is 1.8% CM for cementitious screed (approximately 3% Gravimetric percent by weight.)

Concrete/cement screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner.

Anhydrite screeds/Anhydrite floating screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner shortly before bonding starts.

Wood/gypsum boards (e.g. chipboard, plywood)
Glue/screw the boards to the substructure. They must be fixed to the substrate.

Maintenance

Kährs floors are factory lacquered or oiled. For products with oiled surfaces we recommend the application of a fresh layer of oil instantly after installation, to enhance the durability of the floor. This is normally performed after the cleaning of the surface, before the handover of a project. This preventive maintenance should be done prior to installing furniture. For products with a lacquered surface the need for additional coating is normally limited to areas with extreme use or areas with very heavy foot traffic, i.e. bar areas.

Specifying Guidance: Hospitality >> Wear and Tear

Ensure the specified floor has the ability to withstand wear and tear in its specific application area.

In the application area matrix below, you will find the product quality/surface treatment we generally recommend for various areas. However, sometimes an area can experience more floor traffic than usual, e.g. a small bar with people entering with wet and dirty shoes directly from the street. In such cases attention must be paid to product quality and surface treatment.

The anticipated floor traffic must always govern what product should be specified in an area. We recommend using oiled surfaces in areas with more extreme wear and tear and always in conjunction with the recommended maintenance programme. Oiled surfaces are easier to maintain in such areas and will retain their quality and appearance if serviced on a regular basis. In other areas the choice of surface treatment is more flexible and both oiled and lacquered surfaces can be used.

General recommendations:

  Kährs Supreme Kährs Supreme Kährs Supreme Kährs Supreme Kährs Original/
Avanti
Kährs Original/
Avanti
Kährs Spirit Kährs Spirit Kährs Linnea Kährs Linnea Kährs
Activity
Floor
20 mm 15 mm 15 mm 15 mm 15/13mm 15/13mm 10 mm 10 mm 7 mm 7 mm 30 mm
Oil Oil Lacquer High gloss lacquer Oil Lacquer Oil Lacquer Oil Lacquer Lacquer
HOSPITALITY
Reception                      
Corridors                      
Restaurant                      
Bar                      
Hotel room                      

 

    Recommended
    If the wear and tear is equivalent to domestic use, installation is OK if a well defined maintenance program is followed.
    NOTE! If the wear is heavy in the area we do not recommend installation.
    Not applicable
Underfloor Heating

All Kährs floors, except Beech and Hard Maple, are suitable for use with floor heating. The electrical underfloor heating system must deliver no more than 80 W/m2, evenly distributed.

In a normally insulated house, with a properly functioning underfloor heating system, the temperature of the floor surface is generally 2°C higher than the room temperature. In a hot water underfloor heating system, the flow temperature is usually 7–12°C higher than the floors’ surface temperature and must therefore, never exceed 39°C.

For any system, the surface temperature of the floor must never exceed 27°C. This applies even next to and above radiator pipes, above pipe runs and under carpets, furniture etc.

Always follow the instructions and recommendations given by the supplier of the heating system.

Installation Methods

Kährs floors can be installed floating or glued-down (also nailed-down if the floor has a tongue & groove joint.)

Floating installation
This method is the most cost-effective way of installing the floor. Sub-floor requirements are less demanding. However, the sub-floor must be dry, clean, flat and solid. We recommend that a 0,2 mm PE-film with 200 mm overlap is placed on the sub-floor as moisture protection. An intermediate layer can also be installed on any film to reduce footstep noise. The intermediate layer, e.g. Kährs foam or lump paper, should be installed edge to edge. When installing a Kährs wood floor on an organic subfloor you must make sure that the floor covering including subfloor construction never contains more than one layer of moisture barrier. An alternative is to use Kährs Tuplex, which combines both moisture protection and sound installation. In this case no other intermediate layer should be used.

The humidity of the room must not exceed 60% RH and both boards and the room shall be heated to at least 18° C.

Glue-down installation
The preparation and quality of the subfloor, in combination with the correct type of glue, are crucial for a well functioning surface. The demands and recommendations given here must always be followed in conjunction with instructions from the supplier of glue and preparation materials.

The following steps must always be taken for successful installation:

Acclimatisation
The wood flooring must be acclimatised prior to laying. If the wood boards have not achieved equilibrium in moisture content with their environment then excess expansion/contraction might occur.

Working conditions
The relative air humidity in the room must be between 30% and 65%. Too high air humidity leads to water absorption of the wood floor and causes expansion. All works which add significant quantities of water to the environment around the floor e. g. painting and wallpapering, must be finished prior to wood floor installation.

Subfloor Requirements

Substrate temperature
During application and until the glue is fully cured, the substrate temperature must be 15°C, or +20°C when applied in combination with underfloor heating.

Substrate quality
The substrate must be clean and dry, homogenous and even. It must also be free from oil, grease, dust and loose or friable particles. Paint, cement laitance and any other contaminants must be removed.

Subfloor evenness: (2m length +/- 3 mm)

Substrate preparation
Concrete and cementitious screeds must be mechanically prepared as necessary to achieve the desired substrate quality, then thoroughly vacuumed. On strongly absorbent cementitious substrates, use a primer or dust binder.

Substrate moisture content
Permissible substrate moisture content without underfloor heating is 2.5% CM for cementitious substrates (approximately 4% Gravimetric percent by weight.) Permissible substrate moisture content with underfloor heating is 1.8% CM for cementitious screed (approximately 3% Gravimetric percent by weight.)

Concrete/cement screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner.

Anhydrite screeds/Anhydrite floating screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner shortly before bonding starts.

Wood/gypsum boards (e.g. chipboard, plywood)
Glue/screw the boards to the substructure. They must be fixed to the substrate.

Maintenance

Kährs floors are factory lacquered or oiled. For products with oiled surfaces, we recommend the application of a fresh layer of oil instantly after installation, to enhance the durability of the floor. This is normally performed after the cleaning of the surface, before the handover of a project. This preventive maintenance should be done prior to installing furniture. For products with a lacquered surface, the need for additional coating is normally limited to areas with extreme use or areas with very heavy foot traffic, i.e. bar areas, or in connection with Kährs Activity Floor and the protective coating of line markings and similar.

Specifying Guidance: Retail >> Wear and Tear

Ensure the specified floor has the ability to withstand wear and tear in its specific application area.

In the application area matrix below, you will find the product quality/surface treatment we generally recommend for various areas. However, sometimes an area can experience more floor traffic than usual, e.g an area used for the display of fast-moving products. In such cases attention must be paid to product quality and surface treatment.

The anticipated floor traffic must always govern what product should be specified in an area. We recommend using oiled surfaces in areas with more extreme wear and tear and always in conjunction with the recommended maintenance programme. Oiled surfaces are easier to maintain in such areas and will retain their quality and appearance if serviced on a regular basis. In other areas the choice of surface treatment is more flexible and both oiled and lacquered surfaces can be used. 

General recommendations:

  Kährs Supreme Kährs Supreme Kährs Supreme Kährs Supreme Kährs Original/
Avanti
Kährs Original/
Avanti
Kährs Spirit Kährs Spirit Kährs Linnea Kährs Linnea Kährs
Activity
Floor
20 mm 15 mm 15 mm 15 mm 15/13mm 15/13mm 10 mm 10 mm 7 mm 7 mm 30 mm
Oil Oil Lacquer High gloss lacquer Oil Lacquer Oil Lacquer Oil Lacquer Lacquer
RETAIL
Entrance                      
Cashier area                      
Showroom                      
Back office                      

 

    Recommended
    If the wear and tear is equivalent to domestic use, installation is OK if a well defined maintenance program is followed.
    NOTE! If the wear is heavy in the area we do not recommend installation.
    Not applicable
Underfloor Heating

All Kährs floors, except Beech and Hard Maple, are suitable for use with floor heating. The electrical underfloor heating system must deliver no more than 80 W/m2, evenly distributed.

In a normally insulated house, with a properly functioning underfloor heating system, the temperature of the floor surface is generally 2°C higher than the room temperature. In a hot water underfloor heating system, the flow temperature is usually 7–12°C higher than the floors’ surface temperature and must therefore, never exceed 39°C.

For any system the surface temperature of the floor must never exceed 27°C. This applies even next to and above radiator pipes, above pipe runs and under carpets, furniture etc.

Always follow the instructions and recommendations given by the supplier of the heating system.

Installation Methods

Kährs floors can be installed floating or glued-down (also nailed-down if the floor has a tongue & groove joint.)

Floating installation
This method is the most cost-effective way of installing the floor. Sub-floor requirements are less demanding. However, the sub-floor must be dry, clean, flat and solid. We recommend that a 0,2 mm PE-film with 200 mm overlap is placed on the sub-floor as moisture protection. An intermediate layer can also be installed on any film to reduce footstep noise. The intermediate layer, e.g. Kährs foam or lump paper, should be installed edge to edge. When installing a Kährs wood floor on an organic subfloor you must make sure that the floor covering including subfloor construction never contains more than one layer of moisture barrier. An alternative is to use Kährs Tuplex, which combines both moisture protection and sound installation. In this case no other intermediate layer should be used.

The humidity of the room must not exceed 60% RH and both boards and the room shall be heated to at least 18° C.

Glue-down installation
The preparation and quality of the subfloor, in combination with the correct type of glue, are crucial for a well functioning surface. The demands and recommendations given here must always be followed in conjunction with instructions from the supplier of glue and preparation materials.

The following steps must always be taken for successful installation:

Acclimatisation
The wood flooring must be acclimatised prior to installation. If the wood boards have not achieved equilibrium in moisture content with their environment then excess expansion/contraction may occur.

Working conditions
The relative air humidity in the room must be between 30% and 65%. Too high air humidity leads to water absorption of the wood floor and causes expansion. All works which add significant quantities of water to the environment around the floor e. g. painting and wallpapering must be finished prior to wood floor installation.

Subfloor Requirements

Substrate temperature
During application and until the glue is fully cured, the substrate temperature must be 15°C, or +20°C when applied in combination with underfloor heating.

Substrate quality
The substrate must be clean and dry, homogenous and even. It must also be free from oil, grease, dust and loose or friable particles. Paint, cement laitance and any other contaminants must be removed.

Subfloor evenness: (2m length +/- 3 mm)

Substrate preparation
Concrete and cementitious screeds must be mechanically prepared as necessary to achieve the desired substrate quality, then thoroughly vacuumed. On strongly absorbent cementitious substrates, use a primer or dust binder.

Substrate moisture content
Permissible substrate moisture content without underfloor heating is 2.5% CM for cementitious substrates (approximately 4% Gravimetric percent by weight.) Permissible substrate moisture content with underfloor heating is 1.8% CM for cementitious screed (approximately 3% Gravimetric percent by weight.)

Concrete/cement screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner.

Anhydrite screeds/Anhydrite floating screeds
Must be ground and thoroughly cleaned with an industrial vacuum cleaner shortly before bonding starts.

Wood/gypsum boards (e.g. chipboard, plywood)
Glue/screw the boards to the substructure. They must be fixed to the substrate.

Maintenance

Kährs floors are factory lacquered or oiled. For products with oiled surfaces, we recommend the application of a fresh layer of oil instantly after installation, to enhance the durability of the floor. This is normally performed after the cleaning of the surface, before the handover of a project. This preventive maintenance should be done prior to installing furniture. For products with a lacquered surface, the need for additional coating is normally limited to areas with extreme use or areas with very heavy foot traffic, i.e. bar areas.

Specifying Guidance: Sport facility >> Wear and Tear

The floor is developed and approved by the global standard for sports floors, DIN, 18032:2 and may be used within major indoor sporting arenas, gyms, aerobic studios etc.

Kährs Activity Floor is 30 mm thick and includes an extra layer compared with our Kährs Original and Kährs Linnea ranges. This fourth layer is absorptive, using several layers of polyethylene and polyether, which provide the flooring with the correct energy absorption qualities.

The surface treatment is designed to provide the optimal level of friction, matching the needs of an Activity floor surface.

General recommendations:

  Kährs Supreme Kährs Supreme Kährs Supreme Kährs Supreme Kährs Original/
Avanti
Kährs Original/
Avanti
Kährs Spirit Kährs Spirit Kährs Linnea Kährs Linnea Kährs
Activity
Floor
20 mm 15 mm 15 mm 15 mm 15/13mm 15/13mm 10 mm 10 mm 7 mm 7 mm 30 mm
Oil Oil Lacquer High gloss lacquer Oil Lacquer Oil Lacquer Oil Lacquer Lacquer
SPORTS FACILITY
Basketball                      
Fencing hall                      
Aerobic studio                      
Gym                      
Squash hall                      

 

    Recommended
    If the wear and tear is equivalent to domestic use, installation is OK if a well defined maintenance program is followed.
    NOTE! If the wear is heavy in the area we do not recommend installation.
    Not applicable
Underfloor Heating

All Kährs floors, except Beech and Hard Maple, are suitable for use with floor heating. The electrical underfloor heating system must deliver no more than 80 W/m2, evenly distributed.

In a normally insulated house, with a properly functioning underfloor heating system, the temperature of the floor surface is generally 2°C higher than the room temperature. In a hot water underfloor heating system, the flow temperature is usually 7–12°C higher than the floors’ surface temperature and must therefore, never exceed 39°C.

For any system the surface temperature of the floor must never exceed 27°C. This applies even next to and above radiator pipes, above pipe runs and under carpets, furniture etc.

Always follow the instructions and recommendations given by the supplier of the heating system.

Installation Methods

Kährs Activity Floors can only be installed floating.

Floating installation
This method is the most cost-effective way of installing the floor. Sub-floor requirements are less demanding. However, the sub-floor must be dry, clean, flat and solid. We recommend that a 0,2 mm PE-film with 200 mm overlap is placed on the sub-floor as moisture protection. An intermediate layer can also be installed on any film to reduce footstep noise. The intermediate layer, e.g. Kährs foam or lump paper, should be installed edge to edge. When installing a Kährs wood floor on an organic subfloor you must make sure that the floor covering including subfloor construction never contains more than one layer of moisture barrier. An alternative is to use Kährs Tuplex, which combines both moisture protection and sound installation. In this case no other intermediate layer should be used.

The humidity of the room must not exceed 60% RH and both boards and the room shall be heated to at least 18° C.

Installation on battens, ventilated subfloors or similar, demands a specific stability, equal to one of a concrete subfloor. If this is not considered, the risk of having a flexing Activity floor surface is high and will jeopardise the function of the Activity Floor.

Acclimatisation
The wood flooring must acclimatised prior to laying. If the wood boards have not achieved equilibrium in moisture content with their environment then excess expansion/contraction may occur.

Working conditions
The relative air humidity in the room must be between 30% and 65%. Too high air humidity leads to water absorption of the wood floor and causes expansion. All works which add significant quantities of water to the environment around the floor e. g. painting and wallpapering, must be finished prior to wood floor installation.

Subfloor Requirements

Substrate quality
The substrate must be clean and dry, homogenous and even. It must also be free from oil, grease, dust and loose or friable particles. Paint, cement laitance and any other contaminants must be removed.

Subfloor evenness: (2m length +/- 3 mm)

Substrate preparation
Concrete and cementitious screeds must be mechanically prepared as necessary to achieve the desired substrate quality then thoroughly vacuumed. On strongly absorbent cementitious substrates, use a primer or dust binder.

Maintenance

Kährs Activity floors are factory lacquered. For Kährs Activity floor with a lacquered surface, the need for additional coating is normally limited to areas with extreme use or areas with very heavy foot traffic, and the protective coating of line markings and similar.

Kährs Supreme Thickness: 14-20mm. Resandable: 2-4 times
Småland Collection
Shine Collection
Opaque
Pearl
Fumoir
Tabac
Black Silver
Baccarat
Black Copper
Grande Collection
Manor Oak
Maison Oak
Espace Oak
Chateau Oak
Casa Oak
Citadelle Oak
Castillo Oak
Elegance Collection
Tapis Blanc Oak
Tapis Marron Oak
Da Capo Collection
Indossati
Natura
Vecchio
Maggiore
Unico
Sparuto
Ereditato
Kährs Original Thickness: 15 mm. Resandable: 2-3 times
Capital Collection
Oak Paris
Oak Berlin
Oak Dublin
Arbusto Collection
Oak Canus
Oak Albus
Oak Genuin
Oak Fumeus
Oak Nigri
Craftsman Collection
Oak Hultaby
Oak Kronoberg
Oak Brahehus
Oak Danaborg
Oak Trollaborg
Founders Collection
Oak Gustaf
Oak Olof
Oak Sture
Oak Johan
Oak Fredrik
Oak Ulf
Nordic Naturals Collection
Birch Lapland
Birch Aaland
Ash Gotland
Ash Kalmar
Ash Gothenburg
European Naturals Collection
European Maple Salzburg
Oak Vienna
Oak Siena
Oak Ardenne
Oak Jersey
Oak Verona
Oak Cornwall
Oak Hampshire
Oak Heidelberg
American Naturals Collection
Hard Maple Edmonton
Hard Maple Toronto
Hard Maple Winnipeg
Hard Maple Manitoba
Hard Maple Alberta
Cherry Charleston
Cherry Columbus
Cherry Kentucky
Cherry Savannah
Walnut Georgia
Walnut Montreal
Walnut Philadelphia
Walnut Vermont
Walnut Atlanta
Walnut Hartford
American Traditionals Collection
Oak San Antonio
Oak Java
World Collection
Rauli/Roble Cautin FSC® and Fairtrade
Rauli/Roble Piedra FSC® and Fairtrade
Rauli/Roble Roja FSC® and Fairtrade
Rauli/Roble Tierra FSC® and Fairtrade
Jatoba Brasilia FSC
Jatoba La Paz FSC
Jarrah Sydney
Marina Collection
Oak Biarritz
Oak/Dark strip Aruba
Oak/Ash Stavanger
Oak/Dark strip Marbella
Sand Collection
Ash Sandvig
Ash Falsterbo
Oak Sorrento
Oak Brighton
Oak Portofino
Ash Skagen
Ash Mariehamn
Oak Cancun
Classic Nouveau Collection
Oak Nouveau Snow
Oak Nouveau White
Oak Nouveau Haze
Oak Nouveau Bronze
Oak Nouveau Greige
Oak Nouveau Brown
Oak Nouveau Tar
Oak Nouveau Dun
Oak Nouveau Charcoal
Oak Nouveau Black
Artisan Collection
Oak Oyster
Oak Saw White
Oak Linen
Oak Camino
Oak Concrete
Oak Tan
Oak Slate
Oak Saw Brown
Oak Earth
Heritage Collection
Oak Valois
Oak Plantagenet
Oak Romanov
Harmony Collection
Oak Cirrus
Oak Dew
Ash Alabaster
Oak Frost
Oak Limestone
Oak Creme
Oak Smoke
Oak Kernel
Oak Granite
Oak Ember
Oak Stone
Oak Bean
Oak Soil
Oak Moss
Oak Lava
European Renaissance Collection
Oak Palazzo Bianco
Oak Palazzo Rovere
Oak Palazzo Fumo
Walnut Palazzo Noce
Bayside Collection
Oak Amatique
Oak Hilo
Oak Fundy
Oak Chesapeake
Vineyard Collection
Oak Estrella
Oak Villicana
Oak Estacado
Oak Dominus
Kährs Avanti Thickness: 13 mm. Resandable: 2-3 times
Tres Collection
Ash Vaila
European Maple Gotha
Oak Abetone
Ash Ceriale
Red Oak Nature
Oak Treviso
Oak Trento
Oak Pima
Oak Bisbee
Oak Supai
Kährs Spirit Thickness: 10 mm. Resandable: once
Rugged Collection
Fossil
Husk
Trench
Crater
Groove
Safari
Unity Collection
Reef Oak
Arctic Oak
Sand Oak
Ridge Hickory
Park Oak
Cliff Oak
Garden Walnut
Orchard Walnut
Forest Oak
Kährs Linnea Thickness: 7 mm. Not resandable.
Living Collection
Oak Bisquit FSC
Hard Maple Cream
Oak Sugar FSC
Walnut Cocoa
Oak Coffee FSC
Habitat Collection
Oak Colony
Oak Dome
Oak Castle
Dwell Collection
Lodge Collection
Oak Tide
Hard Maple Spring
Hard Maple Summer
Beech Autumn
Oak Breeze
Cherry Winter
Walnut Bloom
Kährs Activity Floor Thickness: 30 mm. Resandable: 2-3 times
Hard Maple Activity Floor
Beech Activity Floor
Oak Activity Floor
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