AB Gustaf Kähr
Box 805 | S-382 28 Nybro Sweden
Tel +46 (0)481-460 00 | Fax +46 (0)481-178 31
www.kahrs.com
REPAIR OF KÄHRS WOOD FLOORS
CONTENT
GENERAL RECOMMENDATIONS ON PARTIAL REPAIR PAGE
REPAIR OF SMALL SURFACE DAMAGES, CRACKS AND DENTS PAGE
CHANGING OF LAMELLAS PAGE
GLUING OF UNLOCKED WOODLOC S JOINTS PAGE
REPLACEMENT OF BOARDS PAGE
Replacing boards with Woodloc® joint
Replacing boards with Woodloc 5S
Replacing glued T&G boards
®
joint
CLEANING AND MAINTENANCE PRODUCTS DESCRIPTION
PAGE
REPAIR OF KÄHRS WOOD FLOORS
SERVICE AND REPAIR OF KÄHRS WOOD FLOORS
To retain the original durability and beautiful appearance, Kährs wood floors should be
maintained following a simple regime. This information will be available in the Kährs Maintenance guide which can be found on www.kahrs.com
This guide will give a description of the complete range of service and repair products useful
to the professional floor layer. This document will give guidelines and recommendations that
will enable a professional floor layer to perform small repairs of indentations, correct unlocked
Woodloc 5S
We will also inform and guide on how to manage a complete replacement of damaged boards,
on a traditional T&G joint, Kährs Woodloc and on the Kährs Woodloc 5S® joint.
®
joints and how to change a broken lamella.
REPAIR OF KÄHRS WOOD FLOORS
GENERAL RECOMMENDATIONS ON PARTIAL REPAIR – LACQUERED FLOORS
REPAIRS
Partial repairs to multi-layer parquet and Kährs
Linnea:
• Treat small surface scratches and scrape-marks with Kährs
Lacquer Refresher. On deeper scratches, use Kährs Touch-up
Lacquer first.
• Fill small indentations that have cracked the surface with
Kährs Touch-up Lacquer. Dirt can collect in the “hollows” on
brushed products. Remove dirt from individual areas using a
small brush and Kährs Spray Cleaner. Apart from that, look
after floors with brushed boards just like other lacquered
products. Re-lacquer these floors with Kährs Lacquer. The
brushed parts naturally hold more lacquer, and will retain their
brushed appearance even after re-lacquering, if somewhat
less so. Kährs Lacquer Refresher can be used for
maintenance, but the gloss level will gradually increase.
• Fill deep dents, scratches and cracks with Woodfiller or Kährs
Hot-Melt Wax in a matching colour, then lacquer with Kährs
Touch-up Lacquer. Strips or boards with major damage can be
replaced.
RENOVATION
Renovating surface treatment on wood floors:
Microscratches: If small areas of the lacquer have been
scratched (by chairs, tables etc.) the floor can be treated with
Kährs Lacquer Refresher. This conceals the microscratches.
Damp cleaning gradually removes the Lacquer Refresher.
Partial repairs to Kährs multi-layer parquet and Linnea:
If a small area is damaged, worn through or needs to be
repaired for any other reason, it is best to replace the damaged
boards. This is easy with the Woodloc
®
joint. This applies
particularly to stained or special finish boards.
It is important to maintain stained products in good time. Do
not allow the stained finish to wear.
Renovation with Kährs Lacquer (re-lacquering):
The main reason for re-lacquering is that after many years’ use,
the floor needs to be ”freshened up”. The surface to be
lacquered must be cleaned thoroughly with Kährs Spray
Cleaner. If the floor surface is heavily contaminated, use a
rotary floor scrubber (red pad) and Kährs Remover to ensure
that the floor is free from grease and dirt. Remove all Kährs
Lacquer Refresher using Kährs Remover. Then rub down any
residues of Refresher using fine (150 grit) sandpaper or a
sanding disc (150 grit) before re-lacquering. During relacquering, the temperature in the room and of the lacquer
must not be lower than 14°C. The entire floor area must be relacquered to prevent the formation of ridges of lacquer. Apply
the lacquer using a roller or lacquer brush. When re-lacquering,
one coat is enough to cover joints and protect from water.
Remember that the surface to be re-lacquered must not have
been treated previously with wax, polish, etc. This prevents
adhesion, which would mean that the floor would have to be
sanded down to bare wood.
Before re-lacquering, apply lacquer onto a sample area to test
adhesion. If the floor has been re-lacquered previously, follow
the lacquer manufacturer’s instructions. If the floor is likely to
be subjected to heavy wear, apply several coats of lacquer.
The floor can be walked on carefully approx. 8 hours after
lacquering. Rugs can be laid on the floor one week after
lacquering. Be careful with spilt water on the newly lacquered
surface during the first week, because this can cause
permanent stains. Always follow the instruction for the specific
product.
Note that re-lacquering produces a more “plastic” surface
appearance than a factory-lacquered floor, and that scratches
are more visible because the lacquer used for re-lacquering is
less scratch-resistant. Re-lacquering is not carried out in a dustfree environment, so there is a risk that dust particles will
adhere to the surface and form little bumps that are visible
when the lacquer dries.
Total renovation of a wood floor:
If the floor is heavily worn, or needs renovation for some other
reason, it can be machine-sanded to bare wood and have a
new surface treatment applied.
Note. Kährs Linnea cannot be sanded.
Particular attention must be given to stained products or
products with special finishes. Follow the lacquer
manufacturer’s instructions.
! Underfloor heating must be switched off during re-lacquering.
! When a factory-finished floor that has been glued down using
an MS polymer is re-lacquered, the bond between the new coat
of lacquer and the factory-finished lacquer cannot be
guaranteed.
Note. Any sanding of wood floors includes a risk of
delamination of the wood veneers.
This should always be communicated, in writing, to the
consumer, prior to starting of the renovation job.
REPAIR OF KÄHRS WOOD FLOORS
GENERAL RECOMMENDATIONS ON PARTIAL REPAIR – OILED FLOORS
RENOVATION
After extended use, it may be necessary to renovate the
surface treatment and replace it with a new oil treatment. For
very dirty non-stained floors:
1. Clean the floor and make sure that loose particles are
removed.
2. Apply the Kährs Satin Oil to the surface and spread out
evenly and plentifully using a Yarn Mop.
3. Buff the floor with a green disk pad.
4. Remove any excess oil using a rubber squeegee or cloth.
5. Let the surface rest until the oil has dried (about 30 minutes)
6. Buff the floor with a cloth applied on a white disk pad to
remove any excess oil.
Repeat the last step if needed. Please observe that two layers
of thin oil gives a better result than one thick layer. Applying a
too high amount of oil will result in a sticky surface. After a
drying time of 5 hours the floor can be used with care, but
needs 12 hours before lighter furniture can be moved back.
Wait 24 hours to move back carpets and heavier furniture.
Recommended dosage
1 l of Kährs Satin Oil per 40–80 m²
RENOVATION OF FLOORS WITH HEAVY TEXTURE
After extended use, it may be necessary to renovate the
surface treatment and replace it with a new oil treatment.
1. Apply Kährs Cleaner evenly over the surface.
2. Clean the surface using a machine with brush (for example
Orbot Machine with a brush). Please note, do not use too
hard brush. This will prevent damaging of the wood
structure.
3. Dry off the surface using an Absorber Pad or a wet vacuum
machine. This will remove cleaner and dissolved dirt from the
surface.
4. Leave to dry for 30 minutes.
5. Apply Kährs Satin Oil on the surface with a machine (for
example Orbot Machine) using white pad (150–180 rpm)
6. Let the surface rest until the oil has dried (about 30 minutes)
7. Apply a second layer of Kährs Satin Oil on the surface with a
machine (for example Orbot Machine) using white pad (150–
180 rpm)
8. Let the surface rest until the oil has dried (about 30 minutes)
RENOVATION OF STAINED FLOORS
After extended use, it may be necessary to renovate the
surface treatment and replace it with a new Tinted Satin Oil
treatment.
1. Apply Kährs Cleaner evenly over the surface.
2. Clean the surface using a machine with brush (for example
Orbot Machine with a brush). Please note, do not use an
aggressive hard brush. This will prevent damaging of the
wood structure.
3. Dry off the surface using an Absorber Pad or a wet vacuum
machine. This will remove cleaner and dissolved dirt from the
surface.
4. Leave to dry for 30 minutes.
5. Apply Kährs Stained Satin Oil on the surface with a machine
(for example Orbot Machine) using white pad (150–180 rpm)
6. Let the surface rest until the oil has dried (about 30 minutes)
7. Apply a second layer of Kährs Stained Satin Oil on the
surface with a machine (for example Orbot Machine) using
white pad (150–180 rpm)
8. Let the surface rest until the oil has dried (about 30 minutes)
If a stronger recolouring is needed, repeat step 7 and step 8.
The amount of Stained Satin Oil layers are maximum 3 times,
since too thick layers will result in a sticky surface.
9. Buff the surface with a buffing machine (for example Orbot
Machine) using white pad (150–180 rpm). This is done to
secure that the oil has been evenly spread.
Please observe that two thin layers of oil give a better result
than one thick layer. Applying too much oil will result in a sticky
surface.
Recommended dosage
1 l of Kährs Satin Oil per 40–80 m²
Note! A danger of self-ignition exists in contact with organic
materials (e.g. cotton cloths, saw dust, absorbing insulation
materials etc.) due to self-drying oil content. Rags and other
organic materials soaked in oil have to be put into water
immediately after use, in order to avoid self-ignition.
In the case of heavily worn floors, it might be necessary to
repeat step 7 and step 8.
9. Buff the surface with a buffing machine (for example Orbot
Machine) using white pad (150–180 rpm). This is done to
make sure that the oil has been evenly spread.
Please observe that two thin layers of oil give a better result
than one thick layer. Applying too much oil will result in a sticky
surface.
Recommended dosage
1 l of Kährs Satin Oil per 40–80 m²
REPAIR OF KÄHRS WOOD FLOORS
REPAIR OF SMALL SURFACE DAMAGES, CRACKS AND DENTS
In the case of repairing deep dents, scratches and cracks, the
edges of the damaged areas must first be cleaned from sharp
edges and loose particles. This is done using a scalpel.
When repairing dents or similar: you have an option to use
putty or Kährs meltable filler sticks.
MINOR SCRATCHES AND SCUFF MARKS
LACQUERED FLOORSOILED FLOORS
MINOR INDEN TATIONSDEEP DENTS, SCRATCHES AND C RACK S
In case of repair always follow the instructions on the product
packaging.
More information is available on www.kahrs.com.
REPAIR OF KÄHRS WOOD FLOORS
CHANGING OF LAMELLAS
REPLACING STRIPS
Only 3-strip products can have strips replaced.
1. The defective strips must be removed without damaging the
lacquer edges of the surrounding strips. Therefore, cut
through the lacquer layer in the joints around the relevant
strip. Use a straight edge and a very sharp knife.
2. Then carefully chisel out the strip using a wood chisel.
3. Cut down approximately 2 mm into the underlying core
within the four corners, which will support the new strip.
Choose a replacement strip that matches the surrounding
strips in colour and wood structure. Factory-treated repair
strips can be ordered from us. The new strip must be
trimmed to fit the chiselled-out area precisely. Fitting is
easier if the bottom edges of the new strip are chamfered.
We recommend using a suction cup to lift the strip out when
testing the fit. The new strip is fixed in place with a polyester
filler, e.g. Plastic Padding. Apply a bead of filler to the middle
of the chiselled-out section and around the edges of the
underside of the new strip.
Press down the strip so that it is level with the surrounding
strips and hold it in place with your fingers until the polyester
filler has hardened (approx. 3-4 minutes). Always have a cloth
available for quickly cleaning up any surplus filler. After replacing
a strip, it may be necessary to apply a small amount of Kährs
Woodfiller or Kährs meltable filler sticks in a matching colour
around it. Apply Kährs Touch-up where filler has been used. A
correctly replaced factory-treated strip is difficult to detect by
non-experts.
Replacement strips
Kährs can supply replacement strips in all species and surface
treatments (and untreated) currently available in its 3-strip
range. Strips can of course also be cut from finished boards.
Cut through the lacquer layer in the
joints around the strip. Use a straight
edge.
Chisel out the strip and 2 mm of the
intermediate layer using a wood
chisel.
Select and fit a replacement strip.
Fill the cavity with polyester filler and
press the strip down.
REPAIR OF KÄHRS WOOD FLOORS
GLUING OF UNLOCKED WOODLOC 5S JOINTS
In case of an unlocked Woodloc 5S joint, this is a simple way
of rectifying the problem.
1. Mark at the tounge side of the board according to picture.
2. Drill 10–12 mm depth into the board. Note, the drilling depth
is important, you have to drill in order to reach the cavity
(see picture 4).
3. Lift up the board using a suction cup.
4. Inject glue into the drilled holes while continuing lifting the
board.
5. Put pressure immediately after injecting glue. Maintain
pressure for at least 3 minutes.
Repair the drilled holes using Kährs meltable filler sticks.
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45
Recommended glue: Loctite 3090
REPAIR OF KÄHRS WOOD FLOORS
REPLACEMENT OF BOARDS, WOODLOC
Replacing boards with Woodloc® joints, option one
The best method is to lift the boards up to the damaged board,
replace the damaged board and then re-lay the lifted boards.
For best results, re-use a board that was laid near the damaged
one, because it will be a similar colour and have comparable
wear. Install the new board where its “brand new” colour is less
obvious, e.g. near a wall. With the Woodloc
from the front or the back, and from left to right or vice versa.
Replacing boards with Woodloc
1. Saw through the damaged board along its centre line. Saw a
“V” at each short end.
2–3. Pick out the pieces of old board.
4. Cut away the locking moulding on the underlip on both the
long and short sides. Check that the new board fits.
®
joint, you can lay
®
joints, option two
5. Cut off the tongue on the long and short sides. Lightly sand
(0,5mm) the tongue to allow room for the adhesive.
6. Cut the corner on the short side at an angle.
7. Apply Kährs Adhesive to the underlips of the surrounding
boards and the replacement board.
8. Tap the new board in place using a Kährs Hand Block,
beginning on the long side.
9. Then push the board in sideways. Then tap in the whole of
the long side. Place the old board on top of the new one –
on the tongue side – and apply pressure while the adhesive
dries. The wide contact area for the adhesive makes the
joint sufficiently strong.
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REPAIR OF KÄHRS WOOD FLOORS
REPLACEMENT OF BOARDS, WOODLOC 5S
If a board is severly damaged and need replacing, follow
the illustrations below.
Replacing boards with Woodloc 5S joints, option two
1. Saw through the damaged board along its centre line. Saw a
“V” at each short end.
2–4. Pick out the pieces of old board. Use a sharp chisel and
make sure you don´t damage the adjacent boards.
5–6. Cut away the locking moulding on the underlip on both the
long and short sides. Check that the new board fits.
7. Cut off the tongue on the long and short sides. Lightly sand
(0,5 mm) the tongue to allow room for the adhesive.
8. Cut the corner on the short side at an angle.
123
9. Apply a new locking pin on the groove side of the new
board.
10. Apply Kährs Adhesive to the underlips of the surrounding
boards and the replacement board.
11–12. Tap the new board in place using a Kährs Hand Block,
beginning on the long side. The positioning of the new
board will be easier if you apply a weight to the far end
of the board. Then push the board in sideways. Then tap
in the whole of the long side.
13. Place the old board on top of the new one – on the tongue
side – and apply pressure while the adhesive dries. The wide
contact area for the adhesive makes the joint sufficiently
strong.
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78
9101112
13
REPAIR OF KÄHRS WOOD FLOORS
REPLACEMENT OF BOARD, GLUED T&G
Replacing tongue and grooved boards
Where there is major damage involving several wear surface
strips, one or several boards may need to be replaced as
follows: Saw through the damaged board all round, approx. 30
mm from its edge. Lift out the sawn piece and clear the
remaining tongue and groove pieces from the surrounding
material. It is simple to check with a piece of board that no
adhesive residue. Check that the new board is the correct
length. Cut off the lower section of the groove on both the
Saw through the board approx.
30 mm from the edges, lift out
the sawn piece and clear the
Saw through with a circular saw
tongue and groove pieces.Saw through with a circular saw
long and short sides. After testing the fit and making any
necessary adjustments, apply glue to the board and place it in
position (see illustration). Place the old board on top of the new
one – on the tongue side – and apply pressure while the
adhesive dries. Multiple boards can be replaced using the same
method.
Apply a generous amount
of adhesive all round
Glue together – use a clamp
DAMAGED BOARD
Apply pressure while the adhesive
dries
NEW BOARD
The lower section is removed
REPAIR OF KÄHRS WOOD FLOORS
CLEANING AND MAINTENANCE PRODUCTS – DESCRIPTION
MORE DETAILED INFORMATION ABOUT EACH PRODUCT (TECHNICAL DATA AND APPLICATION
INSTRUCTIONS) IS AVAILABLE TO BE DOWNLOADED FROM WWW.KAHRS.COM
KÄHRS CLEANER 1,0 LITER
– effective cleaner for lacqured and oiled floors
Kährs Cleaner is an effective and environment friendly product specially formulated for
cleaning wood and floors. Does not contain any organic solvents or pigments.
Art no. 710518
KÄHRS SPRAY CLEANER 0,75 LITER
– effective cleaner for lacquered and oiled floors
Kährs Cleaner is an effective and environment friendly product specially formulated for
cleaning wood floors.
Does not contain any organic solvents or pigments. For normal daily cleaning. Ready to use.
Art no. 710529
KÄHRS REMOVER 1,0 LITER
– effective remover of polishes and lacquer refresher
Kährs Remover is a remover for Kährs Lacquer Refresher and Wax based polishes from
wooden floors. Kährs Remover can also be used for heavy duty cleaning.
Art no. 710523
KÄHRS LACQUER REFRESHER 1,0 LITER
– restores finished floors
Kährs Refresher is an easy-to-use refresher for finished parquet and wooden floors. The
product gives the wood a protective top surface which simplifies the cleaning and
maintenance process.
Art no. 710522
REPAIR OF KÄHRS WOOD FLOORS
KÄHRS LACQUER
– floor finish
Kährs Lacquer is a one-component water based polyurethane/ acrylate finish for wood and
parquet floors. Suitable for relacquering of satin-lacquered Kährs-floors. Apply with roller,
brush or applicator. The finish has excellent durability and is highly resistant to mechanical
wear and commonly used household cleaners and detergents. Kährs Lacquer is suitable for
residential and commercial use. For Kährs matt lacquered floors or Sport floors use Kährs
Matt Lacquer.
Art no. 1,0 liter: 710521
Art no. 5,0 liter: 710519
KÄHRS MATT LACQUER 1,0 LITER
– floor finish
Kährs Matt Lacquer is a 2-component water based polyurethane finish for wood and parquet
floors. Suitable for re-lacquering of matt-lacquered Kährs-floors. Apply with roller, brush or
applicator. The finish has excellent durability and is highly resistant to mechanical wear and
commonly used household cleaners and detergents. Kährs Matt Lacquer is suitable for
domestic and commercial use, as well as Sport floors.
Art no. 710618
KÄHRS HIGH GLOSS LACQUER 1.0 LITER
– floor finish
Kährs high gloss Lacquer is a 2-component water based polyurethane finish for wood and
parquet floors. Suitable for re-lacquering of high gloss-lacquered Kährs-floors. Apply with
roller, brush or applicator. The finish has excellent durability and is highly resistant to
mechanical wear and commonly used household cleaners and detergents. Kährs high gloss
Lacquer is suitable for domestic and commercial use.
Art no. 710630
SATIN OIL 1 LITER
– clear maintenance oil
Kährs Satin Oil is a hardening urethane oil for maintaining wood and parquet floors. Satin Oil
gives the floor a protective oil layer with a beautiful shine. Satin Oil protects by penetrating
the floor surface.
Art no. 710553
STAINED SATIN OIL 1.0 LITER
– tinted maintenace oil
Kährs tinted Satin Oil is a hardening urethane oil for maintaining wood and parquet floors.
Satin Oil gives the floor a protective oil layer with a beautiful shine. Satin Oil protects by
penetrating the floor surface.
Art no. 710585 Satin Oil Dark-Brown 01, matching for example Romanov
Art no. 710586 Satin Oil Dark-Grey 01, matching for example Ulf
Art no. 710587 Satin Oil Grey-Brown 01, matching for example Sture
Art no. 710588 Satin Oil White 01, matching for example Olof
Art no. 710589 Satin Oil White 02, matching for example Gustaf
REPAIR OF KÄHRS WOOD FLOORS
PARQUET POLISH
– restores finished floors
Kährs Parquet Polish is an effective, environment friendly product that revives finished wood
and parquet floors. Self-polishing, waterproof and protecting against mechanical wear, Kährs
Parkett Polish both cleans and protects your floor.
Art no. 710520
MATT PARQUET POLISH
– restores finished floors
Kährs Matt Parquet Polish is an effective, environment friendly product that revives
finished wood and parquet floors. Self-polishing, waterproof and protecting against
mechanical wear, Kährs Matt Parkett Polish both cleans and protects your floor.
Art no. 710539
SPRAY MOP KIT
Complete cleaning kit for damp mopping of wooden floors. Suitable for both lacquered and
oiled floors. Convenient and ergonomic use with trigger controlled cleaner application The kit
kit includes: Mop holder plate with an ergonomic pole, Replaceable Spray Cleaner tank 0,75
liter, Cleaner Spray 1 liter, 3 pieces of high end washable microfiber mop with Velcro
anchoring.
Art no. 710574
SPRAY MOP CLEANER 0,75 LITER
Refill Package for Spray Mop Kit
Art no. 710576
KÄHRS FLOOR CARE KIT
The perfect all in one cleaning solution for your Kährs floor. The kit contains a 0.75 litre bottle
of Spray Cleaner, a dry mop, and felt floor protectors.
REPAIR OF KÄHRS WOOD FLOORS
KÄHRS FLOOR CARE KIT OILED
The perfect all in on cleaning solution for your oiled Kährs floor. The kit contains Satin Oil in a
spray mop can (250 ml), a dry mop and felt protectors.
Art no. 710564
KÄHRS MOP PAD
Replacement pad for your Kährs mop to be used only with Kährs Spray Cleaner. Can be
machine washed.
Art no. 710512
KÄHRS TOUCH-UP
Used for minor repairs to the floor finish. Available for: satin lacquered floors, oiled floors,
matt lacquered floors and Oak Brighton, Nouveau White, Nouveau Bronze, Nouveau Black,
Nouveau Almond , Nouveau Mocha, Nouveau Brown and Linnea Brown.
Art no. 710223
KÄHRS WOODFILLER
Used for repairs when the wood has become dented or scratched. For best results use in
combination with Kährs Touch-up lacquer.
Ash, Hard Maple Art no. 710619. Birch, Pine, Fir Art no. 710620.
Oak Art no.710621. Natural Oak Art no. 710622.
Beech, Cherry Art no. 710623. Jarrah, Merbau Art no. 710624.
Walnut Art no. 710625. Cherry Art no. 710626.
Black Art no. 710627. White Art no. 710628.
Wenge Art no. 710629
REPAIR OF KÄHRS WOOD FLOORS
KÄHRS REPAIR KIT PRO
For repair of damages in oiled, lacquered and stained wooden surfaces. Firstly test on a
place, which is not so visible.
Art no. 710517
Content
• 7x Touch Up Stains
• 1x Touch Up Oil Brown
• 1x Touch Up Oil, stain free oil
• 3x Touch Up Lacquer; semi matte, matte and high gloss
• 11x Hard Wax Bars, different nuances
• 1x Melting Device and Gas Refill
• 1x Scalpel, Scouring Pad and Plastic Spatula
• 10x Flex Pens, different nuances
KÄHRS REPAIR KIT LACQUERED FLOOR
For the repair of scratches, holes, bruises on parquet, veneer parquet, stairs, doors, furniture
Art no:
Repair kit lacquered floor 710577
Repair kit lacquered floor 5 set 710565
Content
• 10x Hard Wax sticks (4cm)
• 1x Special Fillers Applicator including Sanding Pad and small Sanding and Polishing Cloth