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SuperTherm Topcoat Plaster
A ready-mixed non-hydraulic topcoat for SuperTherm, with a fine texture and a refined creamy off-white finish.
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More about SuperTherm Topcoat Plaster
Cornerstone SuperTherm Topcoat is a dry ready-mixed lime plaster that provides the optimal balance of strength and breathability to support SuperTherm’s exceptional insulation and moisture management properties. Available in the colour off-white.
Engineered with precision to work seamlessly with SuperTherm’s innovative foamed aggregate, which uses a nanometre pore structure to limit heat loss through the building envelope. Available as standard with a high-purity Calcium Hydroxide with pozzolan.
Well-suited for projects aiming to significantly enhance thermal insulation while providing the moisture management solid walls need.
- Specifically engineered as a compatible topcoat for SuperTherm
- Balanced breathability and strength for SuperTherm applications
- Features the feel of creamy fatty plaster
- Enhanced workability for those behind the trowel
- Vapour permeable and actively porous to support moisture management
- No pigments to prevent colour fading
Materials:
Non-Hydraulic Lime, Natural Sands, Additives
Mix Ratio:
1:2
Binder:
CL90, Pozzolan
Aggregate:
2mm down silica sand
Work:
Plastering
Coverage:
A 25kg bag covers approx. 2.5m² at 6mm thickness
Yield:
A 25kg bag yields approx. 15 litres
Colours:
Off-White
Use:
Internal
Coat:
Topcoat
Standard:
BS EN 998-2: 2016
Fire Rating:
A1
Application:
Manual
Data Validation:
2 months ago
Suitable for internal use, where the binder strength is appropriate for the host background or surface.
Relevant for applications requiring a compatible topcoat for SuperTherm, our most insulating thermal layer and basecoat plaster. Appropriate for various project types, including conservation, renovation, or sustainable construction.
A 25kg bag yields up to 15 litres of lime plaster and covers up to 2.5m² at a 6mm 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 natural products, our kiln-dried sands may exhibit 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 25kg polythene-lined and colour and batch-code paper bags for easy identification on-site and palletised for ease of transport, storage, and handling.
Do not use in temperatures below 5°C or above 25°C, or if freezing conditions are predicted within the following few weeks, including wind chill. We always advise following best practices for curing and protecting fresh lime renders and plasters. Protect from adverse environmental conditions, including frost, rain, direct sunlight and drying winds.
Store in covered and dry conditions, protected from environmental conditions, including water, damp or frost and clear from the ground. Always reseal packaging if product is still present.
Always read the available documentation before use. See the Download Documentation section below for more detailed product information, application guidance and datasheets.
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