cement - lime plaster of category III

N1 paca stalowa gładka N1 paca stalowa gładka
N3  kielnia N3 kielnia
P1  na ściany P1 na ściany
P3  do wewnątrz P3 do wewnątrz
W2  wodoodporność W2 wodoodporność
N13  agregat do ścian N13 agregat do ścian
D141 grubość na ścianie 5-30mm D141 grubość na ścianie 5-30mm

Product description

Recommended for indoor cellular concrete plastering – in premises with normal air humidity as well as in kitchens and bathrooms.
Acts as category III plaster – can be used as traditional double-layer plaster consisting of the “scratch coat” and “surface floating coat”, as well as base coat or finishing coat.

Main properties

  • manual or machine application
  • light plaster – contains perlite
  • high output – from 11 kg/m²/cm
  • smooth – grain size up to 0.5 mm
  • easy workability

Main parameters

  • layer thickness: 5 - 30 mm
  • consumption: from 11 kg of mix/ 1 m² / 10 mm
  • improved thermal conductivity coefficient: 0.27 W/mK


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Recommended for indoor cellular concrete plastering – in premises with normal air humidity as well as in kitchens and bathrooms.

Acts as category III plaster – can be used as traditional double-layer plaster consisting of the “scratch coat” and “surface floating coat”, as well as base coat or finishing coat.

Suitable for manual and machine plastering – the use of plastering units allows for fast work progress.

Types of substrates – substrates of increased thermal insulation capacity: porous ceramics and cellular concrete; concrete, aerated concrete, particleboards, cement and cement-lime plasters.


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Increased output – due to specially developed recipe, it offers 50% higher output than traditional cement - based plasters.

Very good adhesion to the substrate – due to the content of lime, it fills in all irregularities of the wall tightly, seals it and strongly adheres to bricks, blocks, etc.

Transfers and distributes strain very well – due to the content of lime, it is a resilient plaster, self-protecting against cracking.

Enables increasing the distance between vertical expansion joints – in comparison with plasters based on cement as the only binding agent.

Limits the absorptivity of the wall – the tightness of cement-lime plaster protects the wall against water penetration and negative effects of it, e.g. against development of biological corrosion.

Perfect workability – the content of lime makes the preparation and the application of the mortar very easy.

Easy to apply and float – very convenient to work with, at plastering both ceilings and walls.

High water vapour permeability – the plaster coat does not interfere with vapour permeability of the wall executed in porous materials like cellular concrete.


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ATLAS LIGHT MACHINE APPLIED CEMENT-LIME PLASTER is manufactured in the form of dry mix of cement binder, lime, quartz fillers, perlite and improvers of the highest quality.

Bulk density (of dry mix)

ca. 1.2 kg/dm³

Wet density (after mixing)

ca. 1.2 kg/dm³

Dry density (after setting)

ca. 1.25 kg/dm³

Mixing proportions

(water/dry mix)
scratch coat 7.8 ÷ 9.0 l/30 kg
finishing coat 6.0 ÷ 7.8 l/30 kg
1000 kg plaster
= ca. 900 l of mortar
Max. aggregate grain size
0.5 mm

Min./max. plaster thickness

5 mm / 30 mm

Mortar preparation temperature,

substrate and ambient temperature

during work

from +5°C to +30°C

Pot life
ca. 2 hours


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The product conforms to PN-EN 998-1 standard. EC Declaration of Performance No. 101/CPR.

PN-EN 998-1:2012
(EN 998-1:2010)

Factory made light plastering mortar (LW),

of specified properties,

for manual and machine application,

for indoor use, on masonry walls,

ceilings, posts and partition walls

Reaction to fire – class
≥ 0.5 N / mm² - FP:B
Thermal conductivity coefficient
(average tabular value P=50%)
0.47 W/mK (λ10, dry)
(EN 1745:2002 tab. A.12)
Gross dry mortar density
≤1300 kg/m³

Durability. Compressive strength decrease

after 25 freeze-thaw cycles
≤ 15 %
Durability. Mass decrement
after 25 freeze-thaw cycles
≤ 3%
Release/content of hazardous
See: Material Safety Data Sheet

The product has been given the Radiation Hygiene Certificate.


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Substrate preparation

The substrate should be dry, stable, flat and capable of load bearing, i.e. sufficiently sound, and cleaned of materials that might affect mortar adhesion, especially dust, dirt, lime, oil, grease, wax, residues of release agents or paint. Insufficiently bound substrate fragments should be hammered off, whereas all loose or crumbling particles should be removed using a steel wire brush. Contacting edges of particleboards should be reinforced prior to plastering using strips of stainless steel mesh. Corners and edges of window and door reveals should be protected using galvanised steel corner profiles. If necessary, substrates characterised by excessive absorption capacity should be primed with ATLAS UNI-GRUNT emulsion. Directly before plastering, the substrate can be wet with clean water and the next step is the application of the preliminary scratch coat.

Plaster application

Apply the plaster with a plastering unit adapted for work with ready-to-use mixes. Apply the material upon walls using a spray gun, in overlapping horizontal stripes, from top to bottom. The sprayer nozzle should be guided in a smooth motion, at a constant distance from the surface. In case of manual application, apply the material with a trowel.

Plaster leveling

Even out the applied mortar using an H-shaped plastering rule and leave until the plaster begins to set. Fresh plaster can be smoothed with a long feather edge until a flat surface is obtained.


The moment to start floating has to be determined experimentally in order to avoid excessive drying of the plaster. Floating is usually carried out after the application of an additional thin layer of the mortar, corresponding to the grain size of the aggregate. The finishing works must be carried out in accordance with plastering works technology, with the use of tools appropriate for the expected finishing result and the intended use of the plaster. If the plaster is to be the substrate for ceramic facing, it should not be floated at all or coarsely finished. If the plaster is to be covered with gypsum finishing coat, float it with EPS float. Ensure proper room ventilation during drying.


Plastered substrates can be painted with all façade paints (e.g. ATLAS ARKOL S, ATLAS ARKOL N, ATLAS FASTEL-NOVA and ATLAS ARKOL E). Commencing painting works is possible after 2 ÷ 6 weeks after the completion of plaster application (depending on the type and colour of the paint). Only painting with ATLAS ARKOL S silicate paints or ATLAS FASTEL NOVA silicone paints can start after the plaster has set, not earlier, however, than after 48 hours (ATLAS ARKOL S) or after 5 days (ATLAS FASTEL NOVA).


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The average consumption is ca. 11 kg of mix/ 1 m² / 10 mm of layer thickness. 1,000 kg of mix allow to prepare 800 l of the mix.


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• Adjust the ratio of added water experimentally, following the desired consistency of the mortar, type of substrate and weather conditions. Inappropriate amount of water for mix preparation results in deterioration of strength parameters of the plaster.

• Tools must be cleaned with clean water directly after use. Difficult to remove residues of the set mortar can be removed with the ATLAS SZOP agent.

• Irritant - contains cement. Irritating to respiratory system and skin. Risk of serious damage to eyes. May cause sensitisation by skin contact. Due to its form - powder, the product may cause mechanical irritation of eyes and respiratory system. Keep out of reach of children. Do not breathe dust. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. If swallowed, seek medical advice immediately and show the container or label. Follow the instructions in the Material Safety Data Sheet.

• Content of soluble chromium (VI) in ready-to-use mix - ≤ 0.0002%.


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The mortar must be transported and stored in tightly sealed bags, in dry conditions (most preferably on pallets). Protect against humidity. Shelf life in conditions as specified is 12 months from the production date shown on the packaging.


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


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The above information constitutes basic guidelines for the application of the product and does not release the user from the obligation of carrying out works according to engineering principles and OHS regulations.

At the time of publication of this product data sheet all previous ones become void.
Date of update: 2014-06-03
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cement - lime plaster of category III

Current documentation