Roundtower SuperTherm Finishing PlasterRoundtower SuperTherm Finishing Plaster is a breathable lime based finishing coat specifically designed for use over Roundtower SuperTherm insulating plaster systems. Applied as a thin reinforced finish layer, it stabilises the underlying insulating plaster, improves crack resistance, and creates a durable, vapour open surface ready for breathable decorative finishes such as limewash, silicate paint, or mineral paint systems. The finishing plaster

A reinforced centre boss sized for 5mm screws

such as tunnels

Recommended bonding width: min

while the curved profile prevents the leading edge from digging into the plaster

Its lightweight formulation and compatibility with cork insulation systems make it particularly suitable for breathable façade upgrades and renovation projects where moisture management is an important consideration

Reduces Efflorescence & Algae Growth – By preventing moisture penetration

Moisture-Regulating & Breathable: Helps maintain indoor humidity between 40–60%

Suitable for Uneven Masonry

Conventional cement renders often trap moisture and can accelerate deterioration in damp masonry

Property Value Product Type Lightweight Backing Mortar Binder Natural Cement Aggregate Lightweight Mineral Aggregates Reinforcement Fibre Reinforced Colour Natural Grey/Tan Application Internal & External Packaging 25kg Bags Typical Use Backing Coat for Cast & Run Mouldings System Compatibility In-Situ Running Render Casting Blend

this plasterer’s trowel offers a perfect balance of control

transport infrastructure