ExternalRender.
Silicone Render Systems
Premium silicone render with hydrophobic technology — self-cleaning, breathable, and crack-resistant.
What Is
External Render?
External render is a polymer-modified coating applied directly to the outside of a building's walls — replacing or covering existing brickwork to create a smooth, textured, or patterned finish in any colour. It bonds to the substrate and forms a durable weatherproof skin.
It's chosen by homeowners modernising dated brick facades, developers transforming new-build elevations, and landlords replacing failing pebbledash — delivering a fresh, low-maintenance exterior that lasts 25–30 years.
Is Render Right for My Property?
Brick or blockwork facades
Ideal application
Failing or dated pebbledash
Full resurfacing
External wall insulation (EWI)
Compatible topcoat
New build masonry
SAP & Part L compliant
Rendered extensions & refurbs
Colour-matched finish
25–30yrs
Service Life
1000+
Colour Options
0.5–3mm
Grain Size
A+
Breathability
Why Silicone Render
Silicone systems deliver superior long-term performance through advanced hydrophobic chemistry and engineered breathability — outperforming acrylic and mineral render across every key metric.
WATER REPELLENT
Hydrophobic Technology
Nano-quartz silicone formulation repels water at surface level while maintaining high vapour permeability. Water beads and runs off, preventing penetration and dramatically reducing dirt adhesion — keeping your walls looking fresh year-round.
UV Stability
Superior UV resistance maintains colour vibrancy — the colour you choose stays the colour you see.
Crack Resistance
Flexible polymer matrix accommodates substrate movement and thermal expansion without cracking.
VAPOUR PERMEABLE
Breathability
High vapour permeability allows moisture from inside the building to escape through the render system, preventing condensation accumulation and eliminating damp issues that plague less breathable coatings.
Colour Palette
Browse EWIPRO's most popular range of silicone render colours, shown in a true 1.5mm grain finish. Select any swatch to preview it up close — and with RAL and NCS matching, virtually any colour is possible.
Open any colour in the browser and use “Ask about this colour” to enquire — we'll confirm your shade with real sample pots at the free survey.
Open any colour and use “Ask about this colour” to enquire — we confirm shades with real sample pots at the free survey.
Professional Application
Est. Duration: 7-14 DaysPrecision silicone render application with quality control at each stage. Professional technique ensures lasting finish and weather protection.
Surface Preparation
We thoroughly clean and prepare the surface, ensuring it's smooth and free from any loose material. Any cracks or imperfections are repaired to create the perfect base.
Base Coat Application
A strong base coat is applied to create a solid foundation. This layer ensures the render bonds properly and provides a smooth surface for the final finish.
Reinforcement Layer
A polymer-modified reinforcement layer is applied with embedded fibreglass mesh. This creates a durable, crack-resistant foundation that can withstand weather and impact.
Silicone Render Application
The premium silicone render is applied in your chosen colour. This creates a breathable, self-cleaning surface that resists weather and requires minimal maintenance.
Final Inspection & Clean Up
We complete a thorough quality check to ensure perfect finish quality. The site is cleaned and all materials are removed, leaving your property immaculate.
Surface Preparation
We thoroughly clean and prepare the surface, ensuring it's smooth and free from any loose material. Any cracks or imperfections are repaired to create the perfect base.
- Surface cleaning and inspection
- Crack and damage repair
- Primer application for adhesion
Service Life & Maintenance
Silicone render systems are engineered for 25-30+ year service life with minimal intervention. Self-cleaning properties and UV stability reduce ongoing maintenance requirements.
Optional Cleaning Guidance
While self-cleaning, occasional low-pressure rinse can be used for exposed/high-traffic areas:
Performance Variables
Actual service life and cleaning frequency affected by:
Annual Inspection Protocol
Simple visual checks to verify system integrity:
Surface Condition
Check for cracks, delamination, unusual staining (rare but possible).
Junction Details
Windows, doors, drip edges, expansion joints. Ensure sealants intact.
Water Management
Verify gutters/downpipes clear. Check for splash-back zones.
Impact Damage
Check for physical damage from ladders, vegetation, accidental impact.
Warranty Coverage
Comprehensive materials and workmanship warranty included. Covers adhesion, finish integrity, color stability. Full terms provided at quote stage.
Cost & Performance
Silicone render costs vary by property size, substrate condition, and number of storeys. Prices include supply, labour, scaffolding and waste disposal — your property's access and site conditions are part of why the rate per m² varies.
Fully Installed
Includes materials, labour, basecoat, mesh, silicone topcoat, reveals, and 10-year workmanship warranty. Final price confirmed after your free site survey.
Before you budget
Final costs factors in multiple site-specific variables, not just the wall area.
Use the figures above to plan a budget, not to fix a price. What your walls actually cost is decided on site: how scaffolding will reach them, what condition the existing substrate is in, the render system they actually need, and the finish you pick all move the number. That's why we put nothing in writing until after a free, no-obligation survey.
What Affects the Price
Property size
Total m² of external wall area — sets the baseline for materials and labour.
Substrate condition
Sound render can be overcoated; hacking off old or failed render adds cost.
Number of storeys
Each additional storey adds scaffold lifts and access cost.
Texture & grain
Finer grains need more careful application and finishing time.
Reveals & trims
Window and door surround detailing is part of the standard price.
Value Over Time
Service Life vs Alternatives
Silicone render
25–30 yrMasonry paint
5–8 yrAcrylic render
10–15 yrIncluded as Standard
Self-cleaning hydrophobic — no repainting
1000+ RAL & NCS colours
10-yr workmanship warranty
Low maintenance — annual rinse if needed
What Affects the Price
Property size
Total m² of external wall area — sets the baseline for materials and labour.
Substrate condition
Sound render can be overcoated; hacking off old or failed render adds cost.
Number of storeys
Each additional storey adds scaffold lifts and access cost.
Texture & grain
Finer grains need more careful application and finishing time.
Reveals & trims
Window and door surround detailing is part of the standard price.
10
Yr Warranty
10-year workmanship warranty on all silicone render installations — equating to ~£9 per m² per year.
Value Over Time
Service Life vs Alternatives
Silicone render
25–30 yrMasonry paint
5–8 yrAcrylic render
10–15 yrIncluded as Standard
Self-cleaning hydrophobic finish — no repainting
1000+ RAL & NCS colours — factory matched
10-yr workmanship warranty
Low maintenance — annual rinse if needed
Get a Fixed-Price Quote
We survey your property, specify the correct system, and provide a detailed fixed-price quotation — all free of charge, with no obligation.
Recent Render Projects
Real silicone render finishes from our portfolio — specified, installed and finished by our own team. Tap any project for the full case study.
Render System Questions
Common questions about silicone render systems, colour, application, and durability.
Silicone render is hydrophobic (water-repellent), self-cleaning, and highly breathable. Unlike acrylic, it doesn't attract dirt and allows moisture to escape, preventing damp issues. It maintains its appearance longer and requires virtually no maintenance for 25+ years.
We work exclusively with EWI Pro Render Systems, offering 50+ standard colours plus NCS and RAL colour matching for unlimited custom options. Physical sample pots are available for all colours.
Yes, silicone render can be applied directly to properly prepared brick, block, or existing render surfaces. We assess substrate condition during survey and prepare surfaces accordingly, including repairs and priming.
Premium silicone render systems last 25–30+ years with minimal maintenance. The silicone technology resists algae growth, stays cleaner longer, and maintains colour stability better than traditional renders.
EWI Pro Render Systems offer grain sizes of 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, and 3.0 mm. 1.5 mm is our most popular choice — an ideal balance of modern aesthetics and practical maintenance.
Absolutely. Silicone render systems are specifically designed to be highly breathable (vapour-permeable), allowing moisture to escape while preventing water ingress — crucial for preventing damp and maintaining healthy walls.
Ready for Silicone Render?
Book a free survey and get a fixed-price quote. Sample pots available for all colours and grain sizes.