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External Wall Insulation UK

Complete EWI Solutions for UK Properties

Buy External Wall Insulation (EWI) materials in the UK. We stock graphite EPS boards, adhesives, fiberglass mesh, profiles, primers and renders with fast UK delivery and same-day Wembley pickup. Trusted supplier of Lakma & Tytan systems. Need a full kit? Use the EWI Calculator to size materials and add everything to basket in one click.

Polystyrene Fiberglass mesh Polystyrene fixing

EPS Boards & Fixings

EWI Adhesives
Facade profiles

EWI Facade Profiles
Primers & Undercoats

Base Coats & Primers

External Renders
Plastering tools

Rendering Tools
Plastering aggregate - STANDARD GUN - RENT

Aggregate Rental

Save £530+ Yearly with External Wall Insulation UK

Premium EWI systems for London homes • Proven solutions • 25+ year guarantee

💰

Massive Energy Savings

Cut your heating bills by up to 35% with premium professional-grade EPS insulation systems expertly designed for UK climate conditions and long-term performance.

£530

Average Annual Savings

🏠

Boost Property Value

Improve your home’s EPC rating and boost market value by 5-10% while eliminating cold spots, condensation issues, and enhancing overall comfort.

5-10%

Property Value Increase

🛡️

Long-Term Protection

Durable insulation systems with 25+ year warranty, minimal installation disruption, and excellent weather resistance for UK homes.

25+

Years Guaranteed

External Wall Insulation Cost UK

The cost of external wall insulation in UK: London, Manchester, Birmingham and across the UK depends on property size size, insulation thickness, and chosen materials. Penguin BM offers affordable, high-performance graphite EPS boards and complete EWI systems with nationwide delivery.

Cost Per Square Metre

Initial Investment:

  • Average cost for a typical semi-detached house: £8,000-£15,000
  • Factors affecting cost: Property size and accessibility, Chosen insulation type and thickness, Selected finishing system, Necessary additional works (e.g., extending rooflines, relocating services)

Long-Term Savings:

  • Energy bill reduction: Up to £530 per year for a typical semi-detached house
  • Reduced maintenance costs due to weather protection
  • Potential property value increase: 5-10%

Financial Support Options:

  • ECO Scheme funding for eligible households
  • Green Homes Grant Local Authority Delivery scheme
  • Home Energy Scotland loans (for Scottish properties)
  • Local council grants (varies by region)

 

System TypePrice per m²PerformanceBest For
Basic EPS£80-120StandardBudget-conscious homes
Premium Graphite EPS£100-140EnhancedBetter thermal performance
Complete Installation London£120-180PremiumFull service package

Return on Investment

External wall insulation typically pays for itself within 10-15 years through energy savings alone, while providing immediate comfort benefits and reducing your carbon footprint by approximately 1.8 tonnes of CO₂ per year.

Contact our team for a detailed assessment and quote specific to your property.

Explore our full range of external wall insulation materials UK, including premium graphite EPS boards, professional adhesives, reinforcement mesh, base coats, finishing renders and complete tool kits – all with fast London and UK-wide delivery.

For more information on ECO funding and energy efficiency standards in the UK, visit the UK Government ECO Scheme page.

EWI Materials & Systems UK

1

EPS Insulation Boards & Systems

High-performance EPS insulation boards and complete external wall insulation systems available across London and the UK. Premium graphite EPS boards for maximum thermal efficiency.

  • ✓ Graphite EPS boards 100-200mm
  • ✓ White EPS insulation boards
  • ✓ Complete EWI systems
  • ✓ UK building regulation compliant
2

Professional Adhesives & Fixings

Professional-grade adhesives and mechanical fixings for secure external wall insulation installation. Trusted by contractors across London, Manchester, Birmingham and throughout the UK.

  • ✓ Premium foam adhesives
  • ✓ Mechanical fixings & screws
  • ✓ Weather-resistant adhesives
  • ✓ Professional fixing tools
3

Reinforcement Mesh & Profiles

Durable reinforcement mesh and facade profiles ensuring long-lasting external wall insulation performance. UK building regulation compliant materials for London properties.

  • ✓ Polystyrene fiberglass mesh
  • ✓ Facade corner profiles
  • ✓ Window reveal profiles
  • ✓ Reinforcement corner beads
4

Base Coats & Primers

Weather-resistant base coats and primers designed for UK climate conditions. Professional-grade materials for external wall insulation projects across London and surrounding areas.

  • ✓ Professional primers UK
  • ✓ Weather-resistant base coats
  • ✓ Undercoats for all surfaces
  • ✓ London climate tested
5

Finishing Renders & Topcoats

Premium finishing renders and topcoats for external wall insulation systems. Wide range of textures and colors available for London homes and commercial properties throughout the UK.

  • ✓ Premium acrylic renders
  • ✓ Silicone-based topcoats
  • ✓ Multiple texture options
  • ✓ Wide color range available
6

Complete Tool Kits & Equipment

Complete tool kits and professional equipment for external wall insulation installation. Everything contractors need for successful projects across London and the UK.

  • ✓ Professional plastering tools
  • ✓ Complete equipment hire
  • ✓ Mixing and application tools
  • ✓ London delivery available

Penguin BM supplies premium external wall insulation materials and complete EWI systems to contractors and builders across London, Manchester, Birmingham and throughout the UK. All products meet British Standards and building regulations for professional installations.

Buy External Wall Insulation Products

External vs Internal Wall Insulation

Choosing the right insulation method is essential for improving energy efficiency and comfort. Below is a comparison of external wall insulation UK systems versus internal and cavity wall insulation – helping you decide which option best fits your home or project.

FeatureExternal Wall InsulationInternal InsulationCavity Wall Insulation
Energy Efficiency⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
Preserves Floor Space✅❌✅
External Appearance✅ (Modern Finish)✅✅
Cost££££££
Disruption During InstallationLowHighMinimal
Best forSolid Walls (UK homes)Small Flats, Listed PropertiesHouses with cavity walls

External Wall Insulation FAQ

Is my property suitable for EWI?

Most properties with solid walls or cavity walls that are unsuitable for cavity filling are excellent candidates for external wall insulation. However, listed buildings or those in conservation areas may have restrictions. Our experts can assess your property and advise on suitability.

In most cases, external wall insulation is considered permitted development and doesn’t require planning permission. However, if your property is listed, in a conservation area, or the installation will substantially change the appearance, permission may be required. We can provide guidance specific to your situation.

A typical semi-detached house usually takes 2-3 weeks to complete, depending on weather conditions and property complexity. Our installation teams work efficiently to minimize disruption.

The total system thickness typically ranges from 60mm to 150mm, depending on the insulation material chosen and the level of thermal performance required. This includes the insulation board, reinforcement layer, and finishing coat.

Properly installed external wall insulation should reduce, not increase, condensation problems. The system includes vapour-permeable components that allow the building to “breathe” while preventing moisture ingress.

External wall insulation systems require minimal maintenance. Periodic cleaning with a gentle pressure wash or soft brush is recommended. Most systems have a life expectancy of 25+ years before any significant maintenance is needed.

Installation is possible throughout the year, though certain weather conditions (heavy rain, strong winds, or temperatures below 5°C) may temporarily halt work, particularly during the application of renders and finishes.

External wall insulation will change your property’s external appearance, but this is typically seen as an improvement. Our wide range of finishes allows you to maintain character features or completely transform your home’s look.

Yes! External wall insulation is an ideal solution for many UK properties, especially those with solid brick walls or poor energy ratings.

Why Choose Penguin Building Materials

As a trusted external wall insulation UK supplier, Penguin BM provides:

Comprehensive Product Range

  • Complete EWI system components from leading manufacturers
  • Latest insulation innovations and specifications
  • Professional-grade tools and application equipment
  • Technical accessories and installation consumables

Expert Technical Support

  • Qualified EWI technical advisors
  • System design assistance and U-value calculations
  • Installation guidance and troubleshooting support
  • Project-specific insulation recommendations

Competitive Trade Pricing

  • Volume discounts for contractors and installers
  • Competitive pricing on complete EWI systems
  • Flexible payment terms for trade customers
  • Next-day delivery across the UK

Professional Service Standards

  • Certified external wall insulation product knowledge
  • Reliable stock availability of all system components
  • Efficient order processing and project coordination
  • Comprehensive customer support throughout installation

Contact our external wall insulation specialists today to discuss your EWI requirements and discover why leading contractors choose Penguins Building Supplies for their external wall insulation projects.

Email: info@penguinbm.com
Phone: 075 1528 3453
Phone: 074 2438 1423
Phone: 020 8991 9590

416 Ealing Rd, London, Wembley HA0 1JQ, United Kingdom

Mon–Fri 7:00 AM – 4:00 PM
Sat 6:30 AM – 1:00 PM
Sun Closed