Cornerstone SuperTherm Topcoat Plaster

A ready-mixed non-hydraulic topcoat for SuperTherm, with a fine texture and a refined creamy off-white finish.

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.
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
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.
The SuperTherm Topcoat should be applied in 2 passes of 2-3mm per pass with a
4mm Alkaline resistant mesh embedded between the passes.
See the Technical Data and Documentation section for detailed product information,
application guidance, and datasheets. Always review any available documents before use.
Do not use in temperatures below 5°C or above 30°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.