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RENDERS BASECOATS & ADHESIVES PRIMERS PAINTS THE LIME RANGE MESH BUILDING MATERIALS

EWI-745 Insulating Cork Render

Product Overview

EWI-745 Insulating Cork Render is a lime-based thermal insulation mortar that combines the natural breathability of lime with the insulating performance of cork. Designed for both internal and external use, it creates a lightweight, vapour-permeable render layer that improves thermal performance while allowing the building fabric to manage moisture naturally.

The inclusion of cork provides effective insulation without compromising adhesion or workability, making it well suited to projects where breathable construction and improved energy performance are required. EWI-745 can be applied by spray machine or trowel, allowing efficient application across large areas as well as irregular or complex architectural surfaces, making it suitable for both heritage refurbishment and modern construction.

Intended Uses

EWI-745 Insulating Cork Render is suitable for internal and external applications on a range of mineral substrates, including brick and masonry, thermo-clay blocks, concrete blocks and lime-based mortars. It can be used on both vertical and horizontal elements where breathable insulation and thermal improvement are required. The product is particularly suited to projects that require natural materials and vapour-permeable wall construction. Use on OSB panels is not recommended, and where insulation thicknesses greater than 80 mm are required, rigid insulation systems should be considered.
SPRAY OR
HAND APPLIED
HIGHLY
BREATHABLE
λ-value:
0.055 W/mK
COVERAGE RATE:
2.6 KG/M² PER CM

Data Sheets

Product Data Sheet

Safety Data Sheet

Install Video Guide

VIDEO COMING SOON

Application Conditions

Substrates must be solid, clean and free from dust, gypsum, cement residues, biological growth or any contaminants that could impair adhesion. Before application, the substrate should be lightly dampened with clean water to support proper curing and reduce the risk of dehydration and cracking. For older or uneven backgrounds, a levelling parge coat may be required to achieve a uniform surface.

EWI-745 is supplied as a dry powder and should be mixed with approximately 4.5 litres of clean water per 10 kg bag until a consistent, homogeneous mortar is achieved. Once mixed, the material has a working time of approximately 60 minutes. The render can be applied using a spray machine or by hand with a trowel, building the required thickness in layers where necessary to ensure even coverage and proper curing.