Schlüter®-BEKOTEC-EN 12 FK | Function | Schlüter-Systems
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Schlüter®-BEKOTEC-EN 12 FK

Application and function

Schlüter®-BEKOTEC-EN 12 FK is a reliable covering assembly system for crackfree and functionally safe floating screeds and heated screeds with coverings made of ceramic tiles, natural stone, and other materials.

The floating system is installed directly on load-bearing, weight-distributing substrates such as concrete or existing wooden floor structures, using the thin-bed method. The thin-bed screed must be manufacturer recommended for the corresponding substrate. The suitability of the substrate for heating purposes (movement joints, edge strips etc.) must be verified. The system is based on the studded polystyrene screed panel Schlüter®-BEKOTEC-EN 12 FK with an anchoring fleece on the underside. The studded screed panel is directly installed onto suitable weight-distributing substrates as a bonded assembly, using the thin-bed method. The geometry of the studded panel Schlüter®-BEKOTEC-EN 12 FK results in a minimum screed thickness of 20 mm between the studs and 8 mm above them. The studs are designed to hold the heating pipes of the system (diameter: 10 mm) in a grid pattern of 50 mm in order to create heated screeds.

The floor heating system is easily adjustable and ideally suited for use with low temperatures, since the screed volume to be heated or cooled is relatively small (approx. 40 kg/ m² ≙ 20 l /m² with 8 mm coverage). The curing stresses that occur in the screed due to shrinkage are absorbed by the studded pattern, thus controlling deformations such as curling. It is therefore unnecessary to install dummy joints or movement joints in the screed. As soon as the cement screed is ready to support weight, the uncoupling mat Schlüter®-DITRA 25 can be installed (calcium sulfate screed < 2 CM-%). Ceramic or natural stone tiles are then installed directly over this layer, using the thin-bed method. Movement joints in the covering layer are created using Schlüter®-DILEX according to industry guidelines. Cover materials that are not susceptible to cracking, such as parquet or carpeting, can be directly installed over the screed as soon as it reaches the necessary residual moisture level for the corresponding covering. See the Technical Manual for further details.


Schlüter®-BEKOTEC-EN 12 FK

Installation

  1. Schlüter®-BEKOTEC-EN 12 FK is a bonded assembly that is installed on a sufficiently load-bearing and level substrate in the thin-bed method with the anchoring fleece on the underside. The substrate must be level, ready to support weight, and free of all substances that may weaken the bond. Any levelling must be completed prior to installing Schlüter®-BEKOTEC-EN 12 FK.
    The adhesive used for bonding Schlüter®-BEKOTEC-EN 12 FK must be selected to suit the substrate type. The adhesive must bond well with the substrate and mechanically set in the anchoring fleece of Schlüter®- BEKOTEC-EN 12 FK. Standard dry-set mortars are suitable for most substrates. Check for any incompatibilities of materials. Apply thin-bed mortar on the substrate with a notched trowel (recommended size: 6 x 6 mm).
  2. Adhere the 5 mm edge strip Schlüter®- BEKOTEC-BRS 505 KSF in places where the covering adjoins walls and other construction elements. The edge strip features an adhesive segment on the bottom for secure attachment. The adhesion on the substrate and the pre-tensioning of the integrated foil leg push the edge strip toward the wall. When the studded Schlüter®-BEKOTEC panel is adhered over the adhesive strip, the panel is permanently adhered to the substrate and flowing screed can no longer get beneath the panel.
  3. Fully embed the anchoring fleece of Schlüter®-BEKOTEC-EN 12 FK in the adhesive and observe the curing times of all materials. The studded screed panels Schlüter®-BEKOTEC-EN 12 FK must be precisely cut to size in the perimeter areas. The Schlüter®- BEKOTEC panels are connected by overlapping a row of studs as shown in the image. In door transition areas and near distributor boxes, the smooth levelling panel Schlüter®-BEKOTEC-ENFGK may be used to simplify the pipe installation. This panel is used underneath the studded panels and is adhered with double-sided adhesive strips. If necessary, apply the included double-sided adhesive tape on the surface of the levelling panel. The self-adhesive pipe clamping strip Schlüter®-BEKOTEC ZRKL 10/12 allows for precise routing of pipes in these areas.
  4. To create a Schlüter®-BEKOTECTHERM ceramic thermal comfort floor, the system pipes with a diameter of 10 mm are now clamped between the cutback studs. The spacing of the pipes must be determined on the basis of the required heating output, as shown in the Schlüter®-BEKOTEC heating diagrams.
  5. As part of the screed installation, cement screed with strength class CT-C25-F4 (ZE 20) or calcium sulfate screed CA-C25-F4 (AE 20) is installed with a minimum screed cover of 8 mm over the studded panels. The flexural strength of the screed may not exceed F5. The screed thickness may be increased to max. 15 mm above the studs for levelling. To avoid sound transmission between individual rooms, the screed should be separated in these places, using the expansion joint profile Schlüter®- DILEX-DFP.
  6. As soon as the cement screed is ready to support weight, the uncoupling mat Schlüter®-DITRA 25 may be installed in accordance with the manufacturer’s recommendations (see product data sheet 6.1). Calcium sulfate screeds may be covered with Schlüter®-DITRA 25 as soon as they have reached a residual moisture level of < 2 CM-%.
  7. Ceramic tile or natural stone can be directly installed on top of Schlüter®- DITRA 25, using the thin-bed method. The ceramic covering must be divided into fields with movement joints above Schlüter®-DITRA 25 in accordance with the applicable regulations. We recommend the profiles Schlüter®- DILEX-BWB, -BWS, -KS or AKWS for creating movement joints (see product information sheets 4.6, 4.7, 4.8 and 4.18).
  8. Our corner movement profiles Schlüter®-DILEX-EK or -RF (see product data sheet 4.14) can be used as a flexible edge joint in wall to floor transition areas. The protruding sections of the Schlüter®-BEKOTEC-BRS edge strip should first be trimmed.
  9. The Schlüter®-BEKOTEC-THERM ceramic thermal comfort floor is ready for heating just seven days after the completion of the cover assembly. Increase the supply temperature by a maximum of 5 °C a day to reach the desired operating temperature, starting from 25 °C water temperature.
  10. All other covering materials that are not susceptible to cracking (e.g., parquet, carpeting or synthetic coverings) can be directly installed over the Schlüter®-BEKOTEC screed without the Schlüter®-DITRA 25 uncoupling mat. The height of the screed must be adjusted to the corresponding material thickness. In addition to the applicable installation guidelines, note the permissible residual moisture level of the screed for the selected covering material.

Schlüter®-BEKOTEC-EN 12 FK

Material

Schlüter®-BEKOTEC-EN 12 FK is made of a high-impact polystyrene deep-drawn foil and is suitable for use with conventional cement screeds of strength class CT-C25-F4 (ZE 20) or calcium sulfate screed CA-C25-F4 (AE 20) as well as flowing screed.


Schlüter®-BEKOTEC-EN 12 FK

Notes

Schlüter®-BEKOTEC-EN 12 FK, -ENFGK, and -BRS are non-rotting and require no special maintenance or care. Before and during the installation of the screed, the studded screed panel may need to be protected from mechanical damage with suitable measures, such as laying out timber boards.

Schlüter®-BEKOTEC-EN 12 FK

Products


Schlüter®-BEKOTEC-EN 12 FK

Schlüter®-BEKOTEC-EN 12 FK

Note:
The uncoupling mat Schlüter-DITRA must be adhered over the screed prior to the installation of ceramic tiles or natural stone. The mat can be installed as soon as the screed is sufficiently ready to bear weight (calcium sulfate screeds ≤ 2% residual moisture). The edge strip BRS 808 KSF must be used with the studded screed panels EN 12 FK.

Technical data:

  • Installation spacing
    50 - 100 - 150 - 200 - 250 - 300 mm
  • Approved heating pipe
    BT HR 10 RT
  • Building material class
    B2 acc. to DIN 4102
  • Working area
    110 x 70 cm = 0.77 m²

Schlüter®-BEKOTEC-ENFGK


Schlüter®-BEKOTEC-EN 18 FTS / BEKOTEC-EN 12 FK

Advantages of the Schlüter®-BEKOTEC system

  • Warranty:
    Schlüter-Systems offer a five-year warranty for the life of the covering assembly, provided all installation instructions were observed and the covering is used as intended.
  • Crack-free covering:
    The Schlüter®-BEKOTEC system is designed to reduce shearing tensions in the screed within the grid of the studded panel. No construction reinforcement is required.
  • Curl-resistant construction:
    The cover assembly of the Schlüter®- BEKOTEC system is free of inherent stresses. Consequently, curling is virtually impossible to occur in the area. This is especially applicable in the presence of temperature fluctuations, for example with heated screeds.
  • Joint-free screed:
    The regular patterns of the Schlüter®- BEKOTEC system evenly reduce tensions in the screed, which allows for constructing the screed without movement joints.
  • Movement joints in the joint pattern of the tile or stone covering:
    With the Schlüter®-BEKOTEC system, the design of movement joints can match the joint pattern of the tiles or stone covering, since it is not necessary to continue construction joints from the screed into the surface covering. The applicable regulations for the dimensions of the covering pattern must be observed.
  • Short construction time:
    As soon as the screed produced with the Schlüter®-BEKOTEC system is able to support weight, coverings of ceramic tile, natural or artificial stone can be directly installed on top of the Schlüter®-DITRA 25 membrane. Ceramic thermal comfort floors are ready for heating only 7 days after the completion of the cover assembly.
  • Material savings:
    Just 40 kg/m² ≙ 20 l /m² of screed are required with a screed cover of 8 mm.
  • Fast-reacting heated floor assembly:
    Compared to conventional heated screeds, cover assemblies installed with a Schlüter®-BEKOTEC system react much faster to temperature changes, since the volume to be heated or cooled is much smaller. Consequently, the heated floor system is particularly suitable for operation at low temperatures.

Schlüter®-BEKOTEC-EN 12 FK

Technical data

  • Stud size: approx. 44 mm
  • Grid spacing: 50, 100, 150 mm ...
  • Diameter of system heating pipes: 10 mm
  • The studs have a cutback design to securely keep heating pipes in place without the need for clamps.
  • Connections: The studded panels are connected by overlapping a row of studs and clicking the panels together.
  • Working area: 1.1 x 0.7 m = 0.77 m²
  • Panel height: 12 mm 4.
  • Packaging: 10 units/box= 7.7 m²
  • Box size is approx. 1160 x 800 x 80 mm

Schlüter®-BEKOTEC-EN 12 FK



Contact Schlüter-Systems Ltd

Units 3-5 Bardon 22,
Beveridge Lane, Coalville,
Leicestershire, LE67 1TE
Phone: +44 (0) 1530 813396

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Further information

on our products and specifications can be found here:

Legend "Products"

We use the following symbols and abbreviations to illustrate our price charts.

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= new products

= radius perforation available   

 

Dimensions:
H = height
L = length
B = width


Packaging:
PL = euro pallet 
KV = case packaging 
BV = bundle (there is a 10 item bundle packaging for all the profile types)
P = box packaging 
R = roll
St. = unit