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LK Slotted Board Wood 22

LK Slotted Board Wood 22

LK Slotted Board Wood 22

600mm x 1800mm x 22mm

Chip Board for Underfloor Heating

22 mm floor grade chipboard ‘tongue & grooved’ all round. The board has 3 slots centred at 200 mm for LK Universal Pipe Ø 16 mm. The board is made in two quality classes, standard V20 and moisture resistant V313. The board shall be supplemented with LK Heat Distribution Plate 16/190, Art. no. 241 80 09.

Building height incl. pipes 22 mm.

£15.19

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Next day to London and 1-2 days to UK Mainland

We supply Slotted Boards for Underfloor Heating. Slotted and Turning Boards Wood 22 is intended for installation on standard wood joist floors of a max. 600mm c/c. The construction comprises of a load bearing slotted 22mm chipboard floor, which replaces the standard board in a floor construction. It is manufactured from environmentally approved and labelled floor grade chip-board (NOTE: as c/c 400mm is standard for the UK, c/c 600mm systems are safe) Underfloor heating on joists

They come in two different types:

1. Moisture Resistant

2. Non-Moisture Resistant

We can also supply the Heat Diffusion Plates to go with these boards for 16mm and 20mm pipe

Design

LK Under Floor Heating using LK HeatFloor 22 Slotted and Turning board is intended for installation on
standard wooden joist floors c/c 600 mm max. The construction consists of a load bearing slotted 22 mm
chipboard floor, which replaces the standard board in floor constructions. Construction outlines has Sitacs
approval certificate 0255/07.
Requirements
A prerequisite for good function of the underfloor heating system is weather dependent control of supply
temperature and a well-conducted and documented adjustment of the primary and secondary loop flow.
In general the guidelines apply in accordance with local building codes and for selected bespoke design
solutions.

1. Floor joists
2. Insulation
Joist insulation should fill up the entire joist cavity. The intermediate joist is not usually fully insulated. But to
avoid any problems with cooling underside of the plates at the leaky/drafty floor is recommended that the
insulation fills up or rest against the underside of the plate.
3. LK HeatFloor 22, Slotted board
Dim. 1800 x 600 x 22 mm with “tongue and groove” on all four sides. The board has 3 slots c/c 200 mm suitable
for use with LK Heat Distribution Plate 16 and LK Universal Pipe 16 mm.
4. LK Heat Distribution Plate 16/190
L=1150 mm, W=190 mm
5. LK Universal Pipe dim.16 mm
6. LK HeatFloor 22, Turning board
Dim. 595 x 800 x 22 mm
7. Vapour barrier according to the floor manufacturer’s instructions and cell foam / rag paper

Surface layer
Parquet
The heating system is first covered with a vapour barrier (PE sheet) according to the floor manufactures
instructions followed by rag paper or open-cell foam sheet. Parquet flooring (min. 14 mm thick) is then laid in
the same direction as the floor heating circuits. Always adhere to the flooring supplier's instructions. Always
ask LK for advice for floors exceeding 25 mm thickness.

Plastic or linoleum flooring
Dry areas
Where using plastic or linoleum flooring, an intermediate floor of approved 16 mm T & G chipboard is laid
floating according to the manufactures instructions. The vinyl/linoleum is then fixed (glued) over the chipboard
to the manufactures instructions.

Wet areas
In wet room areas, lay and fix T & G chipboard (min. 16 mm) to the manufactures instructions. The board must
be primed. In Sweden, for gradient screed shower rooms, the screed must be minimum of 12 mm at drains.
Follow suppliers and local building regulations.

Ceramics or natural stone
For ceramics or natural stone, centre between joists must not exceed 300 mm generally requiring cross battening.
Dry areas
LK Heat Distribution Plate must, after completing laying the pipe, be screwed in place in a zigzag pattern c/c
150 mm. Use suitable flat headed screws (length 14-20 mm). Make sure that the floor and heat distribution
plates are clean, vacuum carefully.
Apply LK Kiilto Start Primer on the entire surface, let dry for 1-2 hours. If there is oil or grease on the plates
this must be washed off before applying primer. Glue a 12 mm floor grade form stable board for floors (for
example plasterboard or fibre cement board) onto the floor with LK Kiilto Flytfix mixed with LK Kiilto
Fixbinder. Apply the glue with a putty-knife, and then "comb out" the glue with a notched trowel (notched 6-8
mm). Fix the floor grade form stable board within 10-15 minutes after the glue is applied. Mark out the position
of the pipes at the same time, to avoid any damage in the next step, when the boards are screwed in place.
The boards are screwed in place with a screw for plaster board along all sides and between the pipe rows. For
cement-boards, use chipboard screws and for plasterboards use plasterboard screws. Begin to screw the sides
of the board 50 mm in from the corners and after that with a distance of max. 300 mm in between. Screw between
the pipe rows with a distance of max. 500 mm between the screws. When the glue has dried after approx. 5 h
the tiling can begin.

Wet areas
LK Heat Distribution Plate must, after completing laying the pipe, be screwed in place in a zigzag pattern c/c
150 mm. Use suitable flat headed screws (length 14-20 mm). Make sure that the floor and heat distribution
plates are clean, vacuum carefully.
Apply LK Kiilto Start Primer on the entire surface, let dry for 1-2 hours. If there is oil or grease on the plates
this must be washed off before applying primer. Glue a 12 mm floor grade form stable board for wet areas (for
example plasterboard or fibre cement board) onto the floor with LK Kiilto Flytfix mixed with LK Kiilto
Fixbinder. Apply the glue with a putty-knife, and then "comb out" the glue with a notched trowel (notched 6-8
mm). Mount the floor grade form stable board within 10-15 minutes after the glue is applied. Mark out the
position of the pipes at the same time, to avoid any damages in the next step, when the boards are screwed in
place.
The boards are screwed in place with a screw for plaster board along all sides and between the pipe rows. For
cement-boards, use chipboard screws and for plasterboards use plasterboard screws. Begin to screw the sides
of the board 50 mm in from the corners and after that with a distance of max. 300 mm in between. Screw between
the pipe rows with a distance of max. 500 mm between the screws. When the glue has dried after approx. 5 h
the tiling can begin. Use levelling compound on the boards to create a sloping floor in wet areas, min. 12 mm
by the floor drain. After that a waterproofing/sealing layer and ceramic tiles. Follow the supplier’s instructions.

Alternative solution for dry and wet areas
For wet rooms and as an alternative solution for dry rooms a slab with levelling compound can be made with
LK Kiilto UFH Levelling Compound. Lay 2 layers of good quality DPM over the under floor heating and ensure
the DPM forms a skirt up walls of 100 mm. Then lay mats of LK Steel Mesh 70x70x2,5. Let the mats overlap
min 70 mm. Cover the installation with LK Kiilto UFH Levelling Compound. Total thickness should be min.
30 mm by floor drain. When the compound has dried after 3-5 days, tiling can begin. Follow suppliers and local
building regulations.

LK Heating Circuit Manifold
The LK Heating Circuit Manifold should be assembled in the intended place as shown in the drawing. Please
read the instructions enclosed with the manifold first.
Lay the piping out before assembling slotted and turning boards to avoid obstructing access to the supply and
return lines.
Evenness of floor joists
Before the boards are laid, the desired degree of evenness under the floor should be inspected. Maximum
curvature ±3 mm over a distance of 2 metres and ±1,2 mm over a distance of 0,25 metres.

Assembly of LK HeatFloor 22 Slotted and turning boards
Slotted and turning boards are laid at right angles to the joists. The maximum allowed distance between joists
is 600 mm For ceramics or natural stone, (in Sweden) centre between joists must not exceed 300 mm. The board
measures 1800x600x22 and is tongue and grooved on all four sides, making possible continuous installation,
i.e. joints can be made between the joists. Short sided joints must not be positioned closer than 200 mm to the
short sided joint in the next row if the joints occur between the same pair of joists.

The turning boards are not tongue and grooved on the long sides. When the short side of the slotted board meets
the turning board the tongue/groove of the slotted board must be cut/ removed. Note that the joint between the
slotted board and the turning board needs to be supported in the middle by a floor joist.
If the installer decides not use turning boards, but to use a routing tool, the board must be fully supported from
beneath. To produce the correct routed profile, the use of LK Router Steel is recommended.
The boards must be fully supported by joists or studs along all walls. Ensure 10 mm expansion gap is left around
all walls and fixtures.
Glue the boards thoroughly to the joists and studs using Casco mounting glue 3303 or the equivalent. Make
sure that the grooves in the slotted boards are set in line with the groves in the turning board.

The grooves and joints of the boards must be glued using Casco mounting glue 3303 or the equivalent. The
amount of glue must be generous so that an excess will be pressed out during laying; excess should then be
wiped off. The amount of glue required is approx. 1,3 L per 10 m2 of floor area.

Screw the boards to each joist and joist support using a row of screws. Where the short joints meet insert a row
of screws in each board on the same joist. Use a maximum screw distance of 150 mm along all supported outer
edges and short joints and 300 mm along the intermediate supports. Use 3,9 x 55 mm chipboard screws
countersunk approx. 2 mm into the board. Complete the installation one board at a time.

Sample drawing we can supply

SLOTTED BOARDS FOR UNDERFLOOR HEATING/ON JO

IST INSTALLATION

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