ENHANCED LIGHT PLASTERING MIX FOR CELLULAR CONCRETE SUBSTRATES

FOR INTERNAL AND EXTERNAL USE

USE

ATLAS KB-TYNK is designed for manual or mechanical making traditional plasters of 0 to III grade, indoors and outdoors. The mixture is particularly suitable for plastering substrates of construction materials characterised by greater insulating abilities such as cellular concrete and aerated concrete. Concrete, gypsum, chip-cement boards as well as rough surfaces made of bricks, blocks, hollow bricks and other similar ceramic or lime-sand materials can serve as substrate for ATLAS KB-TYNK. It is suitable for indoor and outdoor use with maximum layer thickness of 2÷8 mm. For thicker plasters, apply two layers with a several-hour break necessary for initial setting of the first plaster layer. In this arrangement, plaster thickness should not exceed total of 15 mm.

PROPERTIES

ATLAS KB-TYNK is an enhanced dry mineral plastering mix based on cement, lime, quartz fillers, light mineral aggregates and improvers. The mix is very easy and convenient to use and is characterised by good adhesion and high plasticity owing to the content of improvers. It is frost- and water-resistant.

SUBSTRATE PREPARATION

The substrate should be dry, stable, even and structurally sound i.e. strong enough; it should be free from anything that may weaken mortar adhesion, in particular dust, dirt, lime, oil, fat, wax, remains of emulsion and oil paint. Hammer off poorly adhering elements and remove loose pieces using a steel brush. Immediately before plastering, wet the substrate with clean water. If necessary, use ATLAS UNI-GRUNT priming emulsion to reduce substrate’s excessive absorptivity. Before plastering of gypsum substrates, prime and scratch the wall face with a sharp chisel, making a diagonal dense pattern, where the scratches’ depth should be ca. 3 mm. Before plastering chip-cement boards, cover the board contact area with belts made of a metal mesh.

MORTAR PREPARATION

In order to prepare the mortar, pour dry mortar into a container with suitable amount of water (in proportion: 0.22÷0.25 l water for 1 kg of dry mortar) and mix until homogenous. It is best to mix it mechanically, using a drill with a mixer or in a concrete mixer. For mechanical plastering, use a plastering unit. The mortar is ready to use several minutes after mixing. It maintains its properties for 3 hours. Adjust the ratio of added water experimentally, following the desired consistency of the mortar, type of substrate and weather. Inappropriate amount of water for mass preparation results in deterioration of strength parameters of the plaster.

APPLICATION

Conduct all work in accordance with plastering work technology. Use plastering boards to obtain even plaster surface. They can be fixed mechanically or by placing them into the mortar (mesh boards). Plaster at both stages is applied evenly using a trowel or a plastering unit. Collect the excess of the mortar using a float made of foamed polystyrene or wood and put back into the container. Even fresh plaster using a long rule and screeds. The moment when float finish is to be commenced needs to be determined experimentally so that the plaster does not dry too much. To smooth the surface, use tools appropriate to obtain a given finishing effect e.g. a float made of foamed polystyrene. When internal plasters dry, ensure appropriate room ventilation. Protect external plasters from drying too quickly e.g. by sprinkling with water. 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

A 30 kg bag is sufficient for ca. 1.8÷2.0 m2 of 8 mm thick plaster

TOOLS

Trowel or plastering machine, float made of foamed polystyrene or wood. Wash the tools with clean water directly after use. Clean the remainder of the set mortar that is difficult to remove with ATLAS SZOP.

PACKAGING

Paper bags: 30 kg Pallet: 1080 kg in 30 kg bags

STORAGE & TRANSPORT

Store and transport in tightly closed bags, in dry conditions (pallets are particularly recommended). Keep dry. Shelf life in conditions complying with the requirements is 12 months from the date on the packaging.

CAUTION

Irritant. Contains cement and lime. Protect skin, eyes and respiratory system. In case of contact with eyes, immediately rinse them with plenty of water and seek medical attention. In case of ingestion, immediately seek medical attention and show doctor the packaging or label.

TECHNICAL DATA

Mixing proportions 0.22÷0.25 l of water for 1 kg of mortar 6.60÷7.50 l of water for 30 kg of mortar Pot life – ca. 3 hours Temperature mortar preparation temperature – from +5°C to +30°C Substrate and ambient temperature during work – from +5°C to +30°C Temperature resistance during work – from -20°C to +60°C Min. thickness of mortar layer - 2 mm Max. thickness of mortar layer - 8 mm Content of soluble chromium (VI) in ready-to-use mix - ≤ 0.0002% PN-EN 998-1:2004 Factory-made, light plastering mix, intended for manual or mechanical preparation of outdoor and indoor plasters. Reaction to fire - A1 class Adhesion 0.5 N/mm2 - FP:B Compressive strength CS I category (0.4÷2.5 N/mm2) Water absorption - W1 category Water vapour permeability (tabular value) µ 15/35 Thermal conductivity (tabular value) 0.93 W/mK (λ10, dry) Gross dry mortar density ≤ 1200 kg/m3 Durability: mass decrement after freeze-thaw cycles ≤ 5% Durability: category of compressive strength after freeze-thaw cycles CS I

CERTIFICATES

The product conforms with PN-EN 998-1: 2004 and has been given Hygiene Certificate no. HK/B/1552/01/2005 by the National Institute of Hygiene.