Insulated render for a renewed façade

Exterior render is a plaster finish for external walls, available in different colours and textures. At Nu-Isoleren, render is part of a complete external wall insulation system.

The EPS insulation improves the thermal performance of the wall, while the render protects the façade and gives the property a renewed, uniform appearance.

Render is the visible finish of a complete façade system. The existing wall is first assessed and prepared, then the insulation and reinforced base layers are installed before the final decorative finish. The quality of the underlying layers and junction details is essential for long-term performance.

Nu-Isoleren installs render together with external wall insulation. A continuous layer of EPS insulation boards is first fitted to the exterior wall, followed by the reinforcement system, base coats and final render finish.

This build-up combines façade renovation with thermal insulation without reducing the interior living space.

Render is the visible finish of a complete façade system. The existing wall is first assessed and prepared, then the insulation and reinforced base layers are installed before the final decorative finish. The quality of the underlying layers and junction details is essential for long-term performance.

Insulated exterior render combines a renewed façade finish with a continuous insulation layer fitted to the outside of the property.

Insulated render addresses two renovation goals at the same time: improving the thermal performance of the external wall and completely renewing the appearance of the façade. Because the insulation is applied externally, internal floor area is preserved and many thermal-bridge-sensitive junctions can be incorporated more effectively.

For external wall insulation behind render, Nu-Isoleren uses EPS insulation boards from Hisfa nv in Hulshout. The boards form a continuous exterior insulation layer before the complete render system is applied.

Read more on our EPS insulation page.

Nu-Isoleren uses EPS insulation boards from Hisfa nv in Hulshout for the insulation layer. The boards are carefully fitted to create a continuous thermal envelope. Read more on our EPS insulation page.

The final look depends on colour, texture and façade detailing. The chosen finish should work together with windows, plinths, sills and roof edges.

A rendered façade does not require complicated maintenance, but dirt, algae and local damage should be dealt with in time. Cleaning methods must be appropriate for the finish, as excessive pressure or unsuitable products can damage the surface.

The substrate must be stable. Cracks, loose areas, moisture problems and poor pointing should be assessed first.

With external insulation, detailing around windows, doors, roof edges and plinths is especially important.

The substrate must be stable. Cracks, loose areas, penetrating moisture and defective details need to be assessed before installation. Windows, sills, roof edges, plinths and junctions with other façade materials must also be integrated correctly into the system.

External wall insulation is the standard basis of our render system. We build up the façade step by step, from preparation and EPS insulation to reinforcement and final finishing.

After preparation, the Hisfa EPS boards are fixed according to the selected system. The base coat, reinforcement and additional system layers are then applied before the final render. Junctions around openings and edges receive particular attention.

Render is exposed to dirt, moss and algae. Suitable maintenance and cleaning help preserve the finish. Cleaning should be matched to the system to avoid damage.

A rendered façade does not require complicated maintenance, but dirt, algae and local damage should be dealt with in time. Cleaning methods must be appropriate for the finish, as excessive pressure or unsuitable products can damage the surface.

The price of insulated exterior render depends on the façade area, substrate condition, accessibility, insulation thickness, connection details and chosen render finish.

Because every façade is different, we prepare a quotation based on the property and the complete insulation and façade system.

Cost depends on façade area, insulation thickness, substrate condition, accessibility, window and sill detailing and the selected finish. Because this is a complete façade system, a generic price per square metre is only indicative. Request a free quotation for a project-specific calculation.

Because our render work includes external wall insulation, grants or support for façade insulation may be available depending on the region, property and applicable conditions.

See our grants section for current information.

Because Nu-Isoleren installs render together with external wall insulation, insulation grants may be relevant depending on the region. Conditions change over time, so consult our grants page.

View completed rendered façade projects by Nu-Isoleren.

Answers about insulated render, Hisfa EPS boards, pricing, colours, maintenance, substrate preparation, installation and grants.