LIMELITE BACKING PLASTER
Product Data Sheet
LIMELITE BACKING PLASTER
LIMELITE PLASTER PRODUCTS
LIMELITE BACKING PLASTER
Typical Performance
Identification
Technical Data for Limelite Backing Plaster
Pre-blended and dry-bagged, Limelite Backing Plaster is designed to
provide a lightweight plastering system having similar working properties
to a traditional 1:1:6 cement:lime:sand plaster, but with a reduced
bulk density. For high suction backgrounds Limelite Backing Plaster
with X ADDs’ should be used.
Dry powder density
600 kg/m3
Density air dried
800 kg/m3
Density oven dried
725 kg/m3
Compressive strength at 28 days
3.0 N/mm2
Flexural Strength at 28 days
1.4 N/mm2
Modulus of Elasticity
2,100 N/mm2
Appearance as supplied
Fine grey powder
Appearance after
application (dried)
Light grey keyed finish
Thermal conductivity (k) at 0%
moisture by volume
0.13 W/m°C
Thermal conductivity (k) at 3%
moisture by volume
0.21 W/m°C
Thermal resistance (R) at 13mm
and 3% moisture by volume
0.058 m2 °C/W
Authority
Refer to BS 6100–9, Building and civil engineering. Vocabulary.
Work with concrete and plaster. Use in accordance with recommendations
in BS EN 13914-2 (Design, preparation and application of external
rendering and internal plastering. Design considerations and essential
principles for internal plastering), BS EN 13914-1:2005 Design,
preparation and application of external rendering and internal plastering.
External rendering and BS 8481, (Design, preparation and application of
internal gypsum, cement, cement and lime plastering systems).
Description
Composition and manufacture
Limelite Backing Plaster is manufactured under strictly controlled
conditions to ensure consistency.
The plaster is manufactured from ordinary Portland cement, hydrated
lime, Perlite lightweight aggregate and workability aids.
Man-made fibres are incorporated in to the mix to control shrinkage and
improve flexural strength.
Fire Resistance
Limelite Backing Plaster is non-combustible as defined in
BS 476 : Part 4, and can be designated Class O in accordance with the
requirements of the National Building Regulations for use as a surface
finishing material.
Applications
For plastering most traditional backgrounds particularly where surface
hardness, resistance to efflorescence and early decoration are important.
Limelite Backing Plaster with ‘X ADDS’ should be used on high
suction backgrounds.
Limelite Backing Plaster has a controlled setting time, does not
segregate and can be spray applied.
As a comparison below are typical results for a 1 : 1 : 6 Mortar
Technical Data for 1 : 1 : 6 Mortar
Dry powder density
2000 kg/m3
Density air dried
1900 kg/m3
Density oven dried
1850 kg/m3
Compressive strength at 28 days
3.5 N/mm2
Flexural Strength at 28 days
1.0 N/mm2
Modulus of Elasticity
12,400 N/mm2
Thermal conductivity (k) at 0%
moisture by volume
0.61 W/m°C
Thermal conductivity (k) at 3%
moisture by volume
0.97 W/m°C
Thermal resistance (R) at 13mm
and 3% moisture by volume
0.015 m2 °C/W
Thermal data above is obtained from CIBSE A3 Guide : Thermal Properties
of Building Structures.
LIMELITE BACKING PLASTER
Typical Coverage
Thickness
Area
10 mm
120 m2/tonne
10 mm
3m2 / 25kg bag
Figures do not allow for site wastage.
Model Specification
The plaster throughout to be Limelite Backing Plaster
or Limelite Backing Plaster with ‘X ADDS’ and
Limelite High Impact Finishing Plaster. Use in accordance
with manufacturers instructions.
Health & Safety
Health and safety advice, which must be followed, can be found
on the Material Safety Data Sheet. Users are advised to wear face
mask, goggles, gloves and overalls when handling, mixing and
applying cementitious products
Contains Portland Cement. Contains Chromium (VI), which may
produce an allergic reaction. Clothing contaminated by wet cement
should be removed immediately and washed before reuse.
R38 - Irritating to skin. R41 - Risk to serious damage to eyes.
S26 - In case of contact with eyes, rinse immediately with water
and seek medical advice. S37/39 - Wear suitable gloves and eye/
face protection. S2 - Keep out of reach of children.
Quality Control
Limelite products are factory blended, tested and packaged to quality
control procedures in accordance with BS EN ISO 9001.
Clean Up & Spillages
Dry powders should be swept up and disposed of in accordance with
the Local Authority.
Packaging & Storage
Limelite Backing Plaster is available in nominal 25kg bags, palletised
and shrink wrapped.
Palletised Limelite Backing Plaster should be stored in cool dry areas
clear of the ground, sheeted or under cover and stacked not more than
two pallets high.
The product should be used on a first in – first out basis. Shelf life is
minimum 3 months when properly stored but could be in excess of
6 months subject to temperature and humidity.
Information, Prices & Ordering
If you have any questions about choosing the right product for your
particular job, or if you are ready to order, please call us on:
08444 63 00 46
Tarmac Building Products Ltd
Swains Park Industrial Estate
Park Road, Swadlincote
Overseal, Derbyshire
DE12 6JT
Tel:
08444 63 00 46
Fax:08443 09 97 03
Email: limelite@tarmacbp.co.uk
Web: www.limeliteplaster.co.uk