Cornerstone Insulating Lime Render is a lightweight, high-performance insulating render and plaster designed to improve the thermal performance of solid wall masonry constructions. Manufactured using natural hydraulic lime (NHL2), recycled glass aggregates and specialist additives, this innovative product combines excellent insulation with breathability and flexibility associated with traditional lime mortar systems.
Its unique formulation delivers high vapour permeability, helping moisture escape from the building fabric while reducing the risk of trapped condensation. This insulating lime plaster can absorb, store and buffer excess moisture. It is ideal for consistently damp backgrounds, without the risk of render rot or breakdown.
It improves indoor air quality and thermal comfort. Its low 0.095 K-value, helps improve U-values on solid walls. With a 50mm application, this insulating render helps reduce wall heat loss by 50% or more.
Utilising NHL2 lime technology, Cornerstone Insulating Lime Render & Plaster offers excellent adhesion, flexibility and durability. The lightweight composition makes it easier to apply than traditional dense mortar and plaster systems while delivering superior thermal performance. Each 9kg bag yields approximately one litre-rich lightweight insulating mix suitable for a variety of rendering and plastering projects.
Key Features
- High-Performance Insulating Render: Designed to improve the thermal performance of solid wall masonry constructions. Its low 0.095 K-value, helps improve U-values on solid walls.
- Natural Hydraulic Lime (NHL2): Manufactured using premium NHL2 lime for breathability, flexibility and durability.
- Reduces Heat Loss: Helps reduce heat loss through walls and improve overall energy efficiency.
- High Vapour Permeability: Allows moisture vapour to pass through the wall structure while maintaining insulation performance. Ideal for consistently damp backgrounds
- Lightweight Formulation: Lightweight composition improves handling and application compared with traditional mortar systems.
- Suitable for Internal and External Applications: Can be used for a variety of rendering and plastering applications. Suitable for external use when finished with Cornerstone Promix Medium or Promix Fine and mineral paint.
- Flexible Lime-Based System: Provides greater flexibility than many conventional cement-based renders.
- Breathable Alternative to Traditional Mortar: Combines the benefits of lime mortar with enhanced insulation properties.
- It is a ready mixed natural hydraulic lime render and plaster that enhances thermal performance and moisture management of solid walled masonry
- Manufactured using 100% pure natural hydraulic lime and recycled glass aggregates.
- Well-suited for projects looking to reduce thermal losses within walls - A 50mm application will improve the U value of a solid wall by 50% or more.
- Supplied in a 9Kg Bag that yields approx. 15 litres
- This insulating lime render is a viable solution for Part L legislation
| Product Type | Insulating Lime Render |
| Brand | Cornorstone Mortars |
| Yield | A 9kg bag yields approx. 15 litres |
| Materials | Natural Hydraulic Lime, recycled glass aggregates, additives |
| Coverage | A 9kg bag covers approx. 1.5m2 at 10mm thickness |
| Fire Rating | A1 |
| Colour | White |
| Coat | Basecoat |
| Use | Internal, External |
| Order Value | Delivery Charges (Excluding VAT) |
|---|---|
| 1-10 | £30 across the Mainland UK |
| 11-20 | £50 across the Mainland UK |
| Pallet Charges apply Thereafter | |
Returns/Refunds And Cancellations:
- You can cancel your order and get a full refund anytime before we confirm your order via email.
- Orders cancelled after the order confirmation is sent may attract a restocking fee.
- If you want to return insulation that was ordered in excess or not of use anymore, you can return them within 14 days from the date of receipt, provided they are unused and in a resalable condition. Please contact us via email and we will assist you accordingly.
- If the product is damaged on receipt, email us immediately
For more information on returns and deliveries, please refer to our delivery information page.
