SELF-LEVELLING ANHYDRITE COMPOUND (FROM 2 MM TO 10 MM) FOR ROUGH FLOOR

AND LEVELLING ROUGH FLOORS FOR TERRACOTTA, FLOOR COVERING AND WOOD FLOORING
FOR INTERNAL USE

USE

ATLAS SAM 55 is a self-levelling anhydrite jointless floor suitable for making rough floor. It is also used for levelling and adjusting surface of existing substrates under PVC lining, fitted carpets, floor panels, terracotta, stone and natural marble. It can be used for repair and modernisation work as well as for new projects. It is recommended for levelling of existing substrates, slight elevation of rough floor level in the whole room, smoothing levels of two different floors, and when surface irregularities prevent application of appropriate thickness of an adhesive. It can be applied on concrete, cement or anhydrite jointless floor. ATLAS SAM 55 is suitable for all kinds of dry residential buildings, public buildings and other places provided that its parameters comply with utilisation and strength properties of such locations. It can also be used as the levelling layer in floor heating systems. It is suitable only for indoor use. Bed thickness of mortar should be 2÷10 mm.

PROPERTIES

ATLAS SAM 55 is a ready-made dry mixture based on anhydrite and gypsum. It is very convenient and easy to use. It has a self-levelling ability, can be easily and quickly poured on substrates using machines equipped with worm pumps. It ensures efficient application and reduces labour costs. ATLAS SAM 55 shows very good strength properties and after setting, it is virtually a non-contracting material.

SUBSTRATE PREPARATION

The substrate should be stable and structurally sound and, due to the risk of underlayment outflow, should have a tank-like appearance. All steel elements that are in contact with the rough floor should be protected against corrosion. Intermediate expansion joints are not necessary in case of pouring of jointless floor over a surface smaller than 50 m2 where the diagonal is less than 10 m. However, separate the jointless floor from walls and other elements within the pouring area using ATLAS expansion tape or thin strips of foamed polystyrene.

MIX PREPARATION

In case of mechanical pouring, pour a dry mixture to a basket in a mixing-pumping unit and appropriately set the fixed level of dosed water that ensures correct consistency of the mix flowing out from a hose. In case of manual pouring, prepare it by pouring dry mortar into a container with suitable amount of water (in the ratio of 5.0÷6.25 l of water for 25 kg of container) and mix until homogenous. Do it mechanically; a drill with a mixer is recommended. The mix is ready to use right after mixing. It maintains its properties for ca. 40-50 minutes. To check consistency, pour out the mortar from a 1 l container onto even non-absorptive substrate (for example - foil). The mortar should then form a "patch" of ca. 40÷50 cm in diameter.

APPLICATION

The mix is poured out mechanically using a mixing-pumping unit with continuous flow proportioning of water. It can be poured manually, but only on surfaces divided into 10÷15 m2 technological fields. Before starting work it is necessary to set the planned thickness of the rough floor (on the walls and in the pour area) in the rooms. This can be done using for example a level and portable height benchmarks. Pour the prepared mortar evenly and continuously up to the desired height, avoiding gaps. The assumed technological field should be completed in ca. 1 hour. Distribute the poured mix using e.g. a smooth float made of steel. Constantly check the mixing degree and consistency. During first two days of maturation of the jointless floor, do not expose the floor to direct sunlight and draughts, and provide proper ventilation of rooms. If white tarnish has appeared on the surface, remove it mechanically by grinding, and then vacuum the whole surface. Grinding accelerates the drying process. The drying time of anhydrite jointless floor depends on the bed thickness and also thermal conditions and humidity in a given room. Depending on the maturation conditions, humidity, type of floor covering and its permeability, floor covering operations can start on average after 7 – 10 days. Before commencement of work, it is recommended to dry jointless floor surface thoroughly and prime it with ATLAS UNI-GRUNT PLUS. The information comprises basic instructions of product application and does not relieve users of responsibility for work in accordance with good construction practice and OHS regulations.

CONSUMPTION

On average 2.0 kg of the mortar is used for 1 m2 for each 1 mm of the layer.

TOOLS

A drill with a mixer (manual pouring), mixing-pumping unit (mechanical pouring), float made of steel, height benchmarks. Wash the tools with clean water directly after use.

PACKAGING

Paper bags: 25 kg Pallet: 1050 kg in 25 kg bags

STORAGE & TRANSPORT

Keep dry. Store and transport dry on pallets in tightly closed bags. Shelf life is 6 months from the production date on the packaging.

CAUTION

Irritant. Contains cement. Irritates respiratory ststem and skin. May cause sensitisation in contact with skin. Keep out of the reach of children. Do not inhale dust. In case of contact with eyes, immediately rinse them with plenty of water and seek medical attention. Wear suitable protective clothing, gloves, goggles and face protection. In case of ingestion, immediately seek medical attention and show doctor the packaging or label.

TECHNICAL DATA

Mixing proportions ca. 0.2÷0.25 l of water for 1 kg of mortar ca. 5.00÷6.25 l of water for 25 kg of mortar Pot life - ca. 30 minutes Mortar preparation temperature – from +5°C to +25°C Substrate and ambient temperature – from +5°C to +25°C Rough floor use – after 6 hours Heating – after 7 days Complete setting and drying – 7-10 days Floor covering - rough floor humidity not greater than 1.5% (in case of non-permeable and wood-based floor covering, observe recommendations of adhesive and covering manufacturer) Maximum size of filler grains – 0.5 mm Min. bed thickness - 2 mm Max. bed thickness - 10 mm PN-EN 13813:2003 CA-C30-F5 Reaction to fire - A1fl class pH >7 Compressive strength C30 (min. 30 N/mm2) Flexural strength – F5 (min. 5 N/mm2) Corrosive substance release - CA Water and water vapour permeability – NPD Sound insulation - NPD Sound absorbance - NPD Thermal resistance - NPD Chemical resistance - NPD

CERTIFICATES

The product conforms with PN-EN 13813:2003 CA-C30-F5 and has been given Hygiene Certificate no. HK/B/0033/01/2006 by the National Institute of Hygiene.