Exterior and interior raised floor



Raised Access Floors reduce installation times, minimize inconvenience in work areas and cost less than laying a traditional floor.


Technical solutions to installations for special uses.

Since their creation, Raised Access Floors have been used as a technical solution for installations in any type of special use buildings, in which these installations need to be accessible at all times, yet protected below the flooring.

Nowadays, their use has become more widespread in all types of new and refurbished offices and other buildings, mainly due to the ease of installation of the different systems and the versatility of heights of raised access floors, up to 100 cm.

It is usual for companies or specific departments to move or extend their work stations, therefore making it necessary to expand or modify their networks of services. If this is carried out on a traditionally laid floor, or in other words, glued, handicaps are generated with the added problem that once the pipes and installations have been laid below the floor, they may not be modified.

The use of Raised Access Floors simplifies all types of actions to be carried out in the internal life of the company, as far as mobility or expansion of work stations or equipment are concerned, and allows them to be performed under the floor, in the free space below the lower part of the tile, whereby hot and cold water, drainage, electrical, communications and air conditioning systems are always accessible by simply raising a tile in the event of a fault.

The finish of the upper part of the Porcelain Tile Raised Access Floor provides this type of flooring with a wide range of finishes, textures and colours and aesthetic qualities, as well as resistance, hygiene, insulation and safety advantages that other materials do not possess.

System design

The different systems of Alcalagres Raised Access Floors are made up of a series of independent aluminium pedestals, which allow the floor to be levelled, within the limits of UNE 41953,3.1.1. When the height exceeds 18 cm or the loads to be
supported by the floor are very high, this structure is braced with aluminium crossbeams.

The raised floor tile consists of a central core, which may be of different materials depending on the final application of the floor (prefabricated wood, calcium sulphate, injected steel, etc.), protected by an inner metal covering and an outer plastic edge, which also avoids friction between the different panels.

The finish of the Alcalagres Integral Porcelain Tile allows different lappato or polished finishes, colours and sizes. As the central core is 600 x 600, we may use porcelain tiles of 600×600, 300×600 or 300×300 combining two tiles on the same base, or combining four tiles on the same base. The final result is a material with an M-1 or M-0 fire reaction classification, highly resistant to deep abrasion and flexion and with minimal dimensional deviation, as all of the tiles manufactured by Alcalagres are gauge rectified and classified.



Highly resistant to traffic, chemical attack and frost.Reusable and long lasting. Perfectly level surfaces and flexible designs.


Easy access from any point. Installation and repairs to ventilation and suction outlets, piping, electrical systems,
telephone and computer networks are easy and costeffective.


The air chamber created between the raised floor and the sub-floor improves thermal insulation


Porcelain tiles are a material with a M-0 Fire Reaction classification as per the UNE 23727 standard. This
classification is maintained when combined with inert cores. For wooden cores with metal bottom-side coverings, the final classification is M-1 (non-flammable).

Super-low estructure

The SUPER-LOW structure is comprised of a series of injected aluminium or pressed steel elements that form each pedestal beneath the tile intersection point. The top of each pedestal is fitted with a rubber washer that ensures perfect panel placement.

Each pedestal is height-adjustable and can vary between 7.5 cm. and 20 cm. over the tiles. Pedestals are fixed in place with lateral blocking screws or slotted nuts.

Super-level estructure

The SUPER-LEVEL structure is a semi-rigid construction formed by galvanised steel crossbeams supported at each intersection point by pedestals. Each one is comprised of a steel screw rod and a pressed steel head and base set.

The height of each pedestal can be adjusted by turning the nut on the screw rod and can vary between 16 cm. and 100 cm. Each pedestal is fitted with a regulating slotted nut that guarantees that the system stays fixed in place. Sound is dampened by a PVC strip bonded to the crossbeam that also helps to make the floor surface leak-tight.


Xtreme 2.0 and its benefits

Alcalagres is proud to present Xtreme 2.0, a 20mm-thick porcelain tile collection perfect for all kinds of outdoor settings.

The manufacturing process includes the selection of raw materials (white clays, uartz, feldspar, kaolin etc.), pressing at a pressure of 4,600 tons (400 kg/cm2), firing at a temperature of over 1,180 ºC for 100 minutes, and rectifying the tiles. The outcome are tiles of outstanding characteristics, layable using differing outdoor tile-laying systems.


To temperature changes

Xtreme 2.0’s water absorption rate of < 0.1 % guarantees resistance to frost, ice and temperature changes.

To chemical attack

Xtreme 2.0 is resistant to swimming pool salts, acids and chemical substances.

To staining and the passage of time

Xtreme 2.0 is resistant to stains and its colours are unaffected by sunlight.

To heavy weights

Thanks to its high breaking strength (≥ 12,000 N), optimum performance is guaranteed in public areas, homes, and places subject to high traffic.


To lay

The tiles can be laid using a variety of different systems, avoiding the problem of drying times and rubble removal.

To remove

The tiles can be laid and later removed for re-use in another place or to gain access to drains and/or perform maintenance work to the substrate below.

To clean

Because they are low on maintenance and easy to clean, they are perfect for outdoor use.


Slip resistance

Preventing slips or falls outdoors, in wet areas, on pavements and in places like squares is essential. To ensure this, all the models in the Xtreme 2.0 collection meet or surpass the required class 3, R11, group C and DCOF > 0,60 ratings.

Thanks to their uniform appearance

All the tiles in the Xtreme 2.0 collection have matching indoor tile models, so as to ensure continuous flooring indoors and out.

Thanks to their variety

The collection encompasses 42 models, available in a multitude of different formats..

Standard laying

Laying on gravel

Laying on sand

Laying on grass

The outdoor raised access floor is designed to obtain unsloped flat surfaces allowing its use to be extended to terraces, offering a wide range of designs and finishes. Water elimination efficiency from this type of flooring depends on the inclination of the tiles, their size and texture.

The plenum below the floor provides sound and thermal insulation for the lower floor and it can be used to conceal pipes, electrical wiring and drains. By keeping the 4mm tile joints unfilled, this allows water to drain away.

This tile-laying method ensures access to drains and allows for maintenance to the substrate or floor slab.

To assemble the floor, PVC pedestals or plots must be used. The assembly process includes measuring floor levels round the perimeter and round projecting features using a plumb line, planning the layout and number of required tiles, laying the reference rows, continuing with the rest of the assembly process, and laying cut tiles in corners and round the perimeters.

The second row of two perpendicular sides of the perimeter should be laid first as reference rows, so as to ensure a wellsquared surface. ./span>

The number of pedestals will vary, depending on the chosen tile format (see table)


UNE-EN 12825:2002 Raised Access Floors

This European standard specifies the characteristics and requirements regarding the behaviour of raised access floors, which are mainly used for installation inside the buildings in order to offer full access to the services located in the plenum. This standard is not applicable to the requirements related to dangerous substances which may be subject to regulations. This European standard includes provisions from other publications for reference, which may or may not be dated. These references to standards are quoted in the appropriate places of the text of the standard and are listed below. For dated references, subsequent reviews or modifications of any of the publications are not applicable. For undated references, the current publication of the document for the standard referred to is applicable (including its modifications).

EN 1081 Resilient Floor Coverings. Determination of the electrical resistance.

EN 1815 Resilient and Textile Floor Coverings. Assessment of static electrical propensity.

EN-ISO 140-12 Acoustics.Measurement of sound insulation in buildings and of building elements. Part 12: Laboratory
measurement of room-to-room airborne and impact sound insulation of an access floor.

prEN 12524 Building Materials and Products.
Hygrothermal properties. Tabulated design values.

EN 12664 Building Materials. Determination of thermal resistance by means of guarded hot plate and heat flow meter
methods. Dry and moist products of medium and low thermal resistance.

EN 12667 Building Materials. Determination of thermal resistance by means of guarded hot plate and heat flow meter
methods. Product of medium and high thermal resistance.

prEN 13501-1 Fire Classification of Construction Products and Building Elements. Part 1: Classification using data from reaction to fire tests.

prEN 13501-2 Fire Classification of Construction Products and Building Elements.Part 2: Classification using data from reaction to fire tests (excluding products used in ventilation systems).

ENV 61024 Protection of Structures Against Lightning. Part 1: General principles.

HD 384.4.41 Electrical Installations of Buildings. Part 4: Protection for safety. Protection against electric shock.

HD 384.4.473 Electrical Installations of Buildings.
Protection for safety. Application of protective measures for safety. Protection against overcurrent.

HD 384.5.54 HD 384.5.54 Electrical Installations of Buildings. Selection and instalation of electrical equipment. Earthing arrangements and protective conductors.

HD 384.6.61 Electrical Installations of Buildings. Initial verification. Initial verification (prior to being put into service).