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Amtico Signature, Spacia, Form, First, Signature 36+ and Spacia 36+
Installation Guidelines

Introduction & areas of use
Installation of Amtico tiles is straightforward, and follows the same
guidelines that apply to all quality resilient tile floors.
Amtico Signature, Spacia and Form are suitable for use in most heavy
commercial and residential areas.
Amtico First is designed for light commercial use.
Amtico Signature 36+ & Spacia 36+ are designed for commercial areas
where sustainable enhanced slip resistance is required.
In all cases Amtico International products are not suitable for external
installation or in unheated locations.
Note: For all acoustic backed products please consult the Acoustic
installation guide.
Receiving materials, conditioning & storage
Before laying flooring, all materials must be checked to ensure that the
batches are identical and free from defects. Complaints with regard to
clearly identifiable defects cannot be accepted once the flooring has
been laid.
Boxes of tiles should be removed from pallets and separated from one
another as part of the acclimatisation process. Ensure that the heating/
air conditioning is fitted and operating. Alternatively, temporary heating
or cooling may be used to maintain a constant temperature within the
specified range.
Tiles, adhesive and subfloor must be allowed to stabilise to a constant
temperature between 18°C-27°C for a period of at least 24 hours
before, during and after installation. If tiles and adhesive have been
stored outside of this temperature range, then it is recommended
that acclimatisation is increased to 48 hours. Tiles must be stored
flat and kept away from direct sunlight, heaters or air vents for proper
conditioning.
Preparation and Installation should not begin until all other trades have
been completed.
Subfloor Preparation
The suitability of subfloors and site conditions must be assessed prior to
beginning an installation to ensure that they are in accordance with
Amtico International and subfloor manufacturers’ guidelines and
national standards.
Good preparation is essential as the finished appearance of the floor will
only be as good as the quality of the base and preparation over which it
is installed. The base should be hard, smooth, clean, dry and free from
defects. The surface should be even in order to achieve good fitting and
adhesion. Any irregularities in the subfloor will show through the finished
floor.
The guidance notes provided by Amtico International are intended to
give general information on the methods that can be used to prepare
various subfloor types.
The quality and preparation of subfloors, testing for moisture content
and relative humidity, and installation procedures must be in
accordance with Amtico International technical guidelines and country
specific standards (BS 8203 and BS 8204 for UK).
Moisture in Subfloors
Moisture testing of all subfloors is essential before installation can
begin. This is true of new and old buildings. Moisture testing must be
carried out and recorded. All moisture tests must be undertaken in
accordance with local regulations (e.g. BS 8203 for UK) and using an
appropriate method to suit the subfloor type.
The subfloor may be considered dry when the relative humidity is
75% or below.
If readings are above this level, a surface damp proof membrane can be
applied. Consult manufacturers for instructions. Alternatively subfloors
can be given sufficient time to dry.
Solid subfloors
Concrete / Sand and Cement
Tiles must only be installed on suitably dry concrete or sand and
cement subfloors. Drying time will depend on several conditions,
including thickness of slab, location, type of construction, temperature
and humidity. New concrete bases contain a high percentage of
residual moisture.
Subfloors must be thoroughly mechanically cleaned of all paint, curing
agents, grease, wax and any other foreign matter. The use of solvents
to remove surface contaminants is not permitted.
The floor must be hard, smooth, level and free from cracks. Use a
suitable repair compound to fill grooves, cracks, holes and depressions.
Please refer to section titled Levelling / Smoothing Compounds for Solid
Subfloors.
Power Floated Concrete
Power floated concrete has a relatively non-absorbent, low porosity
surface which will increase the drying time. It is not a suitable surface
for direct application of adhesive. Surface laitance may also be
produced by the power floating procedure. For these reasons, it is
recommended that an appropriate method of mechanical preparation
such as shot blasting or scarifying is used to prepare the surface.
Please refer to section titled Levelling / Smoothing Compounds for Solid
Subfloors.
Anhydrite (Calcium Sulphate)
Anhydrite screeds can be difficult to identify and can be mistaken for the
more traditional cement based products.
Provided ambient conditions are acceptable, anhydrite screeds dry at a
similar rate to their cement-based counterparts. In the case of the floor
screed not being sufficiently dry please consult the manufacturer on
how to proceed, in most cases the screed should be allowed to dry out
to an acceptable level.
When the floor is sufficiently dry preparation can begin. Please refer to
section titled Levelling / Smoothing Compounds for Solid Subfloors.
Asphalt
Mastic asphalt is normally applied between 15 and 20 mm thickness
and sets to a dense hard mass which is impermeable to moisture and
therefore forms an efficient damp-proof membrane. Mastic asphalt is
often applied over an existing concrete base which lacks a conventional
DPM. If the asphalt is cracked or damaged it will need to be repaired
and damp proofing may be required.
The asphalt will need to be cleaned before preparation can begin.
Please refer to section titled Levelling / Smoothing Compounds for Solid
Subfloors.
Levelling / Smoothing Compounds for Solid Subfloors
Most solid subfloors will require an application of a compatible
compound to provide a hard, smooth and level surface to which
adhesive and tiles can be applied.
The selection of a suitable compound is critical in determining the long
term durability and appearance of the flooring system. Generally these
compounds should be applied at a minimum of 3 mm thickness. The
manufacturer of this compound can supply details of the product within
their range that should be used to suit the end use application together
with details of which primer should be used.
Expansion Joints
Expansion joints are incorporated into concrete floor slabs in order to
permit movement without causing cracks to form. These joints should
not be filled with smoothing compound or overlaid with Amtico floor
coverings.

Timber floors
Existing Floorboards
Loose floor boards should be firmly nailed down and any damaged
boards replaced. If necessary, the boards should be planed and/
or levelled with a suitable levelling compound prior to covering with
plywood. See section on Plywood Overlays.
Wood subfloors that exhibit excessive deflection, or are “springy” or
“give” when walked on are not suitable for installing Amtico tiles unless
suitable remedial work is carried out.
Chipboard, Hardboard, Particleboard
Tiles should not be adhered directly to such subfloors whether they are
free floating or fixed, and floors should always be overlaid with plywood
prior to installation of tiles. See section on Plywood Overlays.
Wood Block Floors
Existing wood block floors laid onto a concrete base are unsatisfactory
as an underlayment for resilient floors, even when plywood has been
fitted. Such floors must be lifted and the subfloor suitably prepared.
Plywood Overlays
Plywood should be a minimum nominal thickness of 5.5 mm with a
Plywood classification EN636-2 or 3, and a glue bond classification
EN314-2 Class 3 Exterior. The thickness selected should be
determined by the quality of the surface being covered.
Panels should be acclimatised to the site conditions as recommended
by the supplier. Plywood should be protected against damage or water
prior to application.
The plywood should be laid in sheet sizes not exceeding 2440 x 1220 mm,
and fixed using screws or ring shank nails. Fixings should be 2.5 times
the depth of the plywood selected, but should not protrude below the
timber base. Fixing should start at the centre of each sheet – screwing
or nailing at 150 mm intervals at intermediate centres and at 100 mm
centres along the perimeters with the fixing line 12 mm from the edge.
All fixings should be finished flush with the surface.
Joint lines should be staggered, and every effort made to prevent
coincidence of joints in the sheets and the timber base.
We would recommend the use of a suitable compound to ensure the
joints of the plywood and all fixings are not visible when the installation
is complete. The manufacturer of this compound can supply details of
the product within their range that should be used to suit the end use
application together with details of which primer should be used.
Other subfloor types
Existing Resilient Floors
It is recommended that Amtico products are not directly applied over
existing resilient floors (with the exception of Amtico Access and Amtico
Click). Generally, the old flooring should be removed and the base
prepared to suit the type of subfloor uncovered. Please refer to
relevant section.
Some older resilient tiles and adhesives can contain asbestos. In case
of doubt, contact the relevant local authority for advice on their removal
and disposal.
Terrazzo, Stone, Quarry tiles
Some existing flooring materials such as quarry tiles, ceramic or
terrazzo may be suitable for the installation of Amtico tiles if properly
prepared. These bases may be sufficiently porous to allow moisture to
pass through to the back of the tile, and must be checked for moisture
and damp-proofed if necessary. Worn and damaged areas must be
repaired, including any tiles that are insecure, which must be removed.
The surface must be thoroughly cleaned of all sealants and
varnishes, as well as foreign matter such as oil, grease, wax, etc. It is
recommended that a suitable mechanical method is used to prepare
the surface, as this will also provide a satisfactory surface ready
for preparation. Please refer to section titled Levelling / Smoothing
Compounds for Solid Subfloors.
Metal
(i) Direct Application
The metal surface should be cleaned/degreased and then prepared
by grinding or scarifying to ensure that it is clean and free from
any contamination, such as rust or metal oxide. It should then be
mechanically abraded to give a surface key. Amtico tiles can then be
installed onto the prepared surface using Amtico International Universal
2-Part Adhesive.
Note that under no circumstances should a water-based adhesive be
used for bonding directly to metal.
(ii) Indirect Application
The metal surface should be cleaned/degreased and then prepared
by grinding or scarifying to ensure that it is clean and free from
any contamination, such as rust or metal oxide. It should then be
mechanically abraded to give a surface key.
A suitable primer should be applied to the metal surface prior to putting
down a suitable compound, which must be applied as recommended by
the manufacturer.
Once the levelling compound has dried, any adhesive from our range
can potentially be used subject to the restrictions described in the
Adhesive Section.
Raised Access Floors
Amtico tiles cannot be fitted directly to raised floor panels. Where this
is required, the panels should be level and stable, and then overlaid
with plywood, using appropriate fixings to suit the panels surface – see
section on Plywood Overlays.
Note that Amtico Access has been specifically developed for fitting
directly onto raised access floor panels.
Underfloor Heating
There are various types of underfloor heating systems available –
including hot water pipes embedded in the subfloor and electrical
systems that can be laid onto the surface of the subfloor. In all cases,
the temperature limitations are the same – the heating system must
operate so that the temperature at the subfloor surface (i.e. the adhesive
interface) should not exceed 27˚C.
The heating system must be commissioned before the floor tiles are
installed, to ensure that the subfloor is stable, the heating system is
working as required with no leaks or cable breaks.
Underfloor heating should be switched off for 48 hours before, and
should not be switched back on until 48 hours have elapsed after
installation. It is recommended that the heating is slowly re-applied
avoiding full operating temperature for 7 days.
With underfloor heating systems, it is the responsibility of the
manufacturer and/or installer to recommend appropriate procedures
and materials for producing a surface suitable for installing floor tiles.
For electrical systems, this will require that the heating elements are
fully embedded in a well-bonded and appropriate levelling compound,
and that the temperature is adequately controlled to maintain the
temperature at the subfloor surface at a maximum of 27˚C.
Care should be taken in the placing of large insulating items such as
rugs, beanbags and towels onto floors containing underfloor heating.
This can result in localised “hot-spots” which may lead to discolouration
of the tiles. No responsibility can be accepted under
these circumstances

Adhesive Selection & Application
Recommended Adhesives
Only Amtico adhesives should be used – others may not give adequate
performance and could fail.
Amtico SF Adhesive
SF Adhesive is a very low emissions (EC1 Plus), water-based acrylic
adhesive with a working time of 1 hour that is recommended for use in
all areas except those subject to heat and moisture.
Amtico PS Adhesive
PS Adhesive is a water-based acrylic adhesive that has an extended
working time of 3 hours and is recommended for all areas except those
subject to temperature change or moisture.
Amtico HT Adhesive
HT Adhesive is a very low emissions (EC1 Plus), single-part, wetset water-based acrylic adhesive that has very good temperature
resistance; it has a working time of 30 minutes.
It is recommended for areas subject to some heat variations, such as
conservatories and areas receiving direct sunlight. It is also suitable for
use where underfloor heating has been installed.
Amtico HT Extra Adhesive
Amtico HT Extra is a single part, wet set, water based adhesive with
very low emissions (EC1 Plus): it has a working time of 20 minutes.
Recommended for all areas, including those with heat variation and
underfloor heating.
Amtico Universal 2-Part Adhesive
Universal 2-Part Adhesive is a wet-set adhesive that can be used for
bonding Amtico tiles in wet areas such as bathrooms. It may also be
used for high temperature areas. Universal 2-Part has a working time up
to 60 minutes, is entirely solvent free and classified as EC1R Plus very
low emissions.
Application:
Follow the instructions on the packaging. Spread adhesive evenly using
an A2 trowel. Do not use worn trowels.
Only spread sufficient adhesive that can be covered within the
recommended working time.
Tiles should be rolled with a 45kg (100lbs) roller after installation to
flatten the adhesive ridges, and then again approximately 20 minutes
after this to ensure full contact.
Always clean away excess adhesive before it is allowed to dry – use a
soft cloth moistened with Amtico Adhesive Remover. Dried adhesive
can be removed by carefully scraping it off the tile, or by using
a 3M red pad moistened with Amtico Adhesive Remover.