Unpainted, clean brick wall
If the wall is clean, stable and not painted, the surface is primed first. This helps prepare the brickwork before the EPS insulation boards are bonded to the wall.
What We Do
External wall insulation finished with Ceresit CT74 silicone render.
We currently focus on one main type of exterior work: insulating houses with Ceresit CT 315 graphite EPS boards and finishing the facade with a silicone render system. The aim is a clean, durable and weather-resistant finish, built from proper preparation rather than shortcuts.
Substrate Preparation
The first stage is making the wall ready for the system.
The quality of the finished render depends on what happens before the insulation boards go on. We check the existing wall and prepare it according to the condition of the surface.
Existing finish removed first
If the wall has pebbledash or another render finish, it is removed back to a suitable base. The wall is then cleaned, repaired where needed and prepared for the insulation adhesive.
Work Sequence
Layer by layer, the facade is built as a complete system.
The process below shows the typical order of work for EPS external wall insulation finished with silicone render. The exact specification can depend on the property, access, substrate condition and material requirements.
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Starter tracks
Starter tracks are fixed level around the building to set the base line for the insulation boards.
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Bond EPS insulation boards
EPS boards are bonded to the prepared wall with suitable adhesive, keeping lines tight and the surface controlled.
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Mechanical fixings
The insulation is fixed with approved insulation anchors after bonding, adding mechanical support to the system.
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Beads and drip details
Corner beads, stop beads and drip beads are installed to protect edges, form clean lines and manage water run-off.
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Basecoat, mesh and second coat
A basecoat adhesive is applied, reinforcement mesh is embedded, then another coat is applied to create the reinforced layer.
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Primer
Once the reinforced layer is ready, the facade is coated with primer before the final render is applied.
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Ceresit CT74 silicone render
The final silicone render is applied evenly and textured to create the finished facade surface.
System Materials
The insulation layer and the final render work together.
The graphite EPS board improves the thermal performance of the wall, while the silicone render creates the finished external surface. Presenting both products together helps clients understand what is inside the system and what they see on the outside.
Insulation Material
We use Ceresit CT 315 Facade Polystyrene EPS Graphite.
The insulation board is the thermal layer of the system. It is fixed to the outside of the house before the reinforced basecoat, mesh, primer and final silicone render are applied.
Better heat retention
External insulation helps reduce heat loss through the walls, so the home can hold warmth more effectively.
Improved comfort
Warmer wall surfaces can help reduce cold spots and make rooms feel more comfortable in everyday use.
Lower energy demand
A well-insulated wall system can help reduce heating demand, depending on the property and how it is used.
Protected exterior finish
The insulation is completed with reinforced layers and render, giving the house a renewed facade surface.
Final Render Product
Ceresit CT74 Silicone Self-Clean render.
Ceresit CT74 is a decorative thin-layer silicone render used for exterior facade finishes, including Ceresit ETICS systems with EPS insulation boards. It is designed for a stone-like textured finish and is available in different grain sizes.
Hydrophobic surface
Designed to repel water and help the facade resist dirt build-up in normal exterior conditions.
Vapour permeable
Low water absorption with high vapour permeability helps the external wall system perform properly.
Durable finish
Elastic, impact resistant and suitable for external facade surfaces exposed to everyday weather.
Clean appearance
Creates the visible silicone render finish that gives the property its final exterior look.
Available CT74 Colours
Ceresit CT74 colour range.
Clients can choose from the Ceresit CT74 colour range shown below. The images on this website are for guidance only and cannot represent the finished render colour with 100% accuracy. Before the final choice is made, the client will be shown a physical colour book so the selected shade can be confirmed properly.
Ceresit Video
Watch the Ceresit product video.
This manufacturer video introduces the Ceresit render product and helps clients understand the finish, performance and system quality behind CT74.
Open on YouTubeStart a Project
Send the postcode, photos and a short description.
Photos of the existing wall help us understand whether it is clean brickwork, painted brick, pebbledash or old render, and what preparation may be needed before insulation work begins.
strongwallse@gmail.com
WhatsApp +44 7352 035105
StrongWall is a branding name used by self-employed construction specialists. This website represents our work and services; it does not describe an incorporated company or limited company.
