SuperTherm - Lime Plaster
Verified by manufacturer 5 days ago
A ready mixed ultra-lightweight and low density fibred plaster to enhance the thermal insulation of solid walled masonry suitable for use within a two coat render application.
Application
Suitable for internal use, where the binder strength is appropriate for the host background or surface.
Relevant for applications requiring an insulation layer, SuperTherm can be applied directly to the wall as a basecoat plaster within a suitable plaster system, eliminating the need for boarded systems. SuperTherm requires a topcoat finish, including SuperTherm Finishing Plaster, Promix Fine Topcoat or Promix Medium Topcoat. Appropriate for various project types, including conservation, renovation, or sustainable construction.
A 3.75 kg bag yields up to 15 litres of lime render or plaster and covers up to 1.5 m² at a 10 mm thickness. Consumption rates will change based on how even the background is and suction. On-site trials are advised for the best yield indication for your specific project.
As this contains natural foamed aggregates, there may be variations in colour, texture, and shape. While these variations are minimal, when colour consistency is crucial, we strongly advise each elevation is completed using material from the same batch.
Supplied in 3.75 kg polythene-lined and colour and batch-code paper bags for easy identification on-site and palletised for ease of transport, storage, and handling.
Description
Cornerstone SuperTherm is a dry ready mixed lime plaster designed as an ultra-lightweight and low density fibred basecoat for internal applications within a minimum of a two-coat render application. Available in the colour off-white.
Engineered with precision to provide a revolutionary internal lime plaster with an unmatched insulating performance. Utilising an innovative foamed aggregate with a nanometre pore structure that prevents the directional flow of heat that results in heat loss through the building envelope. Available as standard with fibres and a high-purity Calcium Hydroxide with pozzolan.
Well-suited for projects requiring an ultra-lightweight plaster with exceptional insulating properties, with a measured K Value of 0.04, a 50 mm application will improve the U value of a solid wall by more than 75%.
Features and benefits:
- Our most insulating lime plaster.
- Functions as a thermal layer and basecoat plaster.
- Designed to improve insulation and reduce heating costs.
- Highly vapour permeable to support moisture management.
- Reduces relative humidity and controls condensation.
- Improves indoor air quality and thermal comfort
- Free from halogens, and heavy metals.
- Can be applied at 50 mm per pass as a high-build render.
- Ultra-lightweight for less demanding levelling and finishing.
- Enhanced workability for those behind the trowel.
- A viable solution for Part L legislation.
General information
Color | White |
Material | Lime |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | M20/47 One coat proprietary plaster M20/240 One coat proprietary plaster M20/42 Multicoat proprietary plaster M20/220 Multicoat proprietary plaster |
Specification data - Lime plasters
Classification data | |
Product reference | SuperTherm. |
Components | Non-hydraulic lime, foamed aggregate. |
Reinforcement | Fibres. |
Density | 260 kg/m³. Manufacturer guidanceDry hardened density. |
CompressiveStrength | To EN1015-11, 3.014 Nmm². |
Reaction to fire | Class B-s1, d0. |
Water vapour permeability | To EN1015-19, 4.2 µ. |
ThermalConductivity | 0.04 W/mK. |
Standard | To BS EN 998-1. |
Sustainability data
Country of product manufacture | United Kingdom |
Material | Lime |
Literature
Literature type
Cornerstone SuperTherm Plaster Datasheet
Cornerstone Supertherm Safety Datasheet
Cornerstone SuperTherm Mixing and Application Guidance
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