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Technical
Specifications: Cork Floor Tiles - raw and coloured
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General
& Other Characteristics |
Application &
Maintenance |
Installation Specification |
Workmanship | Preparation
of Materials | Schedules
 Product
Description:
High-density tiles for use in areas where a durable
hardwearing floor surface is required. Manufactured
from granules of cork oak tree bark, bound together
with non-toxic resins and baked into blocks, split and
then cut into tiles.
Three size profiles (all 6.0mm thick):
305 x 305 tile
450 x 450 tile
900 x 100 plank
Area
of Application
Kitchens, family rooms, bedrooms (particularly for allergy
and asthma sufferers), bathrooms, toilets, laundries,
dining rooms, reception areas, foyers, bars, halls,
church floors, classrooms and theatres.
General
Characteristics
Composition
Made from agglomerated cork granules which are taken
from the outside (Bark) of the cork oak tree, grown
in Portugal. These are bound together with resins, baked
in a mould and then sliced, rested, split then sanded
on all surfaces. `ORVALHO' tiles are sanded twice on
the top surface and once on the back and sides. Tiles
are guaranteed square cut to within ISO Norm standards
of +/-0.5%.
Dimensions
- 3 profiles available
305 x 305 x 6mm (11 tiles per square m)
450 x 450 x 6mm
900 x 100 x 6mm
Finishes
and Colours
Polyurethane: Four coats of water-borne or moisture
cured polyurethane. Colour variation is an inherent
characteristic as cork is a natural product.
Important
Cork Tiles are a natural product. As such colour variation
will occur, and no claims will be entertained once laying
has commenced . It is the floor layer's responsibility
to check the tiles before laying.
Textures
Different densities, different granule sizes and different
baking times give different appearances and shades.
Weight
/ Density
500 - 540 kg/m3
Other
Characteristics
- Attractive
- Durable
- Easy
to clean
- Traditional
- Warm
- Excellent
insulation properties
- Soft
underfoot
- 30
year life-span
- Very
low maintenance costs
Tolerance / Variations
Squareness
+/- 0.5%
Density
+/- 10%
Manufacturing
Standards
Produced by ORVALHO to ISO 9002 Specifications.
Performance
and Durability
Guaranteed with regular maintenance of polyurethane
surface to last a lifetime.
Chemical
Properties
Cork is resistant to fluids, chemicals. The polyurethane
may react to some chemicals.
Thermal
Properties
One of the best known insulation materials. Used in
the Apollo spacecraft and submarines.
Fire
Resistance
Self-extinguishing. Non flammable.
Moisture
Behaviour
Repels water, however constant dampness from substrate
will result in discolouration.
Biological
Resistance
Mould resistance if laid correctly. Insect resistant.
Sound
and Noise
Extremely good acoustic properties
Light
Cork tiles will fade with exposure to U.V
Odour
No odour from the cork floor tiles but there is a strong
odour emission from the moisture-cured polyurethane
while laying. Water-borne polyurethane is more commonly
used today.
Weather
Resistance
Cork tiles are not to be specified for areas exposed
to weather. Resistant to moisture in doorways etc as
long as polyurethane surface is maintained.
Test
Procedures
ISO 9002
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Application
and Maintenance
Areas of Application
Anywhere a hard flooring is required - ideal in rest
homes, hospitals, libraries, theatres etc.
Design
Considerations
Used extensively as a wall and ceiling lining material
in other parts of the world.
Limitations
Cork should not be used outside in the weather. Cork
should not be laid on imperfect sub floors.
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Installation
Specification
General:
Scope:
Supply and install Cork Supplies (NZ) Limited `ORVALHO'
cork floor tiles as shown on the plans / scheduled below.
Materials
Primary Materials:
Tiles: Cork Concepts, a division of Cork Supplies (NZ)
Ltd `ORVALHO' cork floor tiles.
Sizes:
305 x 305 x 6mm
450 x 450 x 6mm
900 x 100 x 6mm
Accessory Materials:
Adhesive: Tiles are purchased preglued.
Contact latex adhesives supplied to spread on floor.
Finish: Water-borne Polyurethane or
moisture curing Polyurethane.
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Workmanship:
Material Storage:
Store product flat to prevent bending.
Preparation
of Structure:
Check substrate moisture content: Concrete slabs must
have matured and be quite dry. Check moisture content
with a moisture gauge if in doubt. Check that there
is no risk of future dampness.
Maximum allowance of moisture: 62% residual humidity
or 6% moisture content
Check surface:
Concrete must be smooth and well screeded and free of
holes, rough spots, lumps, rain damage or other damage.
Ensure there are no drummy spots or loose plaster.
Prepare T&G Floorboards:
Check for defective floor joists or floor boards. Lay
4.75 mm hardboard over flooring and nail or staple at
100mm centers both ways and at 50 mm centers at edges.
All fastening shall be countersunk.
Prepare Particle Board:
Ensure that particle board is clean and sanded free
of dirt, concrete or other polyurethane finish.
Do not use:
`White Floor Fill' except to fill narrow cracks, chips
and holes in concrete floors.
Lay Levelling Compound:
Lay levelling compound where floor levels are uneven.
Only operators experienced in the use of these materials
shall be used for this part of the work.
Pre-Sand sub floor in preparation for laying cork tiling.
Confirm position and layout of any underfloor systems.
Ensure that fastenings do not penetrate into this area.
(Contact supplier re tolerances of Under Floor Heating)
Clear Area of all debris, equipment and other
trades material. Ensure that other operators will not
require access to the area while tiles are being laid.
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Preparation
of Materials
Check tiles and reject any that are damaged or out of
square. It is preferable that cork tiles are laid and
finished prior to new carpet being laid.
Installation
Ensure that the client has signed off and agreed with
the colour of the tiles to be laid.
Install in accordance with the specifications as set
out in the Master Flooring Contractors Manual on Resilient
Flooring.
Fix
tiles to the pattern shown on the plans / Check and
confirm pattern with Principal.
Note:
Apply polyurethane at specified coverage rate.
Allow 3 hours for the polyurethane to dry and as
many days as possible to cure before bringing heavy
furniture and appliances onto the floor.
Completion
Leave work clean / Protect work:
Protect work until polyurethane has fully hardened -
approximately 48 hours.
Remove Rubbish:
Remove all trade waste and surplus material from the
site.
Give maintenance instructions to the principal or customer.
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Schedules
Supply and Install the specified goods and services
as scheduled below.
Important
Cork tiles are a natural product. As such colour variation
will occur and no claims will be entertained once laying
has commenced. It is the floor layer's responsibility
to check the tiles before laying. Ensure that the client
has signed off and agreed with the colour of the tiles
to be laid.
Accessory
Products
Cork tiles can be covered with wax or oil preparations.
Adhesives are supplied. Polyurethane comes with the
purchase - either water-borne or moisture-cured.
Storage
Product to be stored flat to prevent bending.
Cleaning
Use a sponge rung out of hot water - no detergents.
To cut through grease, place methylated spirits or lemon
juice in the water. Use 'Versatile' polyurethane surface
cleaner for tiles finished with moisture-cured polyurethane
only.
Estimating
and Ordering
Units of supply - Cartons holding 4.65m (50 tiles).
Estimating
Guide
Adhesive
1 Litre = 3 m
Polyurethane
1 Litre = 10 - 12 square metres
Delivery
Factors
Ex stock. Cork Supplies (NZ) Limited hold plentiful
supplies of raw tiles ex Portugal at all times.
Cortiça coloured tiles: 5 working days from receipt
of order
Reference
to further technical information
Brochures are available from Cork Supplies (NZ) Limited.
Conditions
of Sale
Normal trading terms apply.
Pricing
Laid price depends on complexity of the job and type
of tile specified.
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