Breathable Lime Renders & Plasters for Sustainable Building
Natural lime renders and breathable plasters designed for hempcrete, solid wall renovation, retrofit, and low-carbon construction projects across the UK.
Our vapour-permeable lime render systems work in harmony with hemp blocks and natural building materials to create healthier, moisture-balanced buildings with durable, beautiful finishes. Suitable for both contemporary eco homes and heritage restorations, our mineral-based renders and plasters support breathable wall construction while helping reduce the risk of trapped moisture and condensation.
Manufactured in partnership with leading lime specialists, our range includes high-performance basecoat and finishing renders and plasters for internal and external applications.
Ideal for:
- Hempcrete and hemp block construction
- Passive House and low-energy homes
- Solid wall and heritage retrofits
- Timber frame systems
- Breathable wall assemblies
- Healthy, low-toxicity interiors
Build naturally. Finish beautifully.

Ironstone Basecoat Render
A professional grade premixed natural hydraulic lime render with a coarse texture and contemporary white finish for basecoats or float coats or as a textured finish topcoat. Manufactured in partnership with Heidelberg Materials Socli.
£16.50 + VAT per bag

Ironstone Basecoat Plaster
Ironstone Basecoat plaster can be applied directly to Hempcrete blocks. The Ironstone basecoat plaster features the feel of modern plaster with extended working time, excellent workability and enhanced plasticity. For use internally in building conservation, the addition of the fibres provides reinforcement and improved tensile strength of the scratch coat and assists to mitigate cracking on high suction backgrounds.
£16.50 + VAT per bag

Ironstone Finishing Render
A professional grade premixed natural hydraulic lime finishing render with a medium texture and refined tan finish. Manufactured in partnership with Heidelberg Materials Socli
£16.50 + VAT per bag

Ironstone Finishing Plaster
A high quality ready mixed natural hydraulic lime plaster with a superfine texture and refined white finish, providing a smooth and satisfying internal superfine finishing coat. Manufactured in partnership with Heidelberg Materials Socli.
£18.50 + VAT per bag









