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BASECOAT ADHESIVE
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SILICONE RENDER
External Wall Insulation Specialists Southampton - Renders World
Complete EWI Systems & Building Materials Across the UK
Based in Southampton, Hampshire, Renders World delivers premium external wall insulation solutions to trade professionals and homeowners across the UK. With over 10 years of experience in EWI systems, we supply complete insulated render packages including silicone renders, insulation boards, adhesives, and professional tools.
Our insulated render systems transform properties by reducing heat loss up to 33%, cutting energy bills significantly while protecting your building from weather damage.
Certified Quality
BBA approved systems with 25-year warranties for lasting protection
Fast Delivery
Next-day delivery UK-wide from our Southampton warehouse
400+ Colours
Complete colour matching service for perfect aesthetic results
Expert Support
Technical guidance and project support from qualified specialists
Complete EWI Systems & Products
Silicone Renders
Premium silicone render systems including Atlas Gemini and Ceresit CT74, offering self-cleaning properties.
Mosaic Renders
Decorative mosaic render systems that combine insulation with stunning visual appeal.
Insulation Boards
High-performance EPS and XPS insulation boards including graphite-enhanced options.
Adhesives & Basecoats
Professional-grade EWI adhesives and basecoats including Atlas Hoter-U 2-in-1 systems.
Reinforcement Mesh
Fiberglass reinforcement mesh and PVC corner profiles for structural integrity.
Wall Primers
Specialist wall primers including Atlas Cerplast and Uni Grunt for optimal adhesion.
FASADE DESIGNER
Use one of our preprepared house models and try out your favourite colour combinations to design the house of your dreams!
Need a help?
Calculate the cost of materials required to insulate and render your property
Colours Chart
Choose the color you are interested in from the Ceresit or Atlas color range
INSTALLATION GUIDES
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Want to become autorized EWI installer?
Want to become autorized EWI installer?
UK-Wide Delivery & Southampton Collection
Next-Day Delivery UK-Wide
Fast, reliable delivery across the entire UK for all EWI systems and materials.
Same-Day Collection
Collect your external wall insulation materials directly from our Southampton warehouse.
Based in Southampton, we serve the entire UK with professional external house insulation solutions.
Call Us
023 8200 2442Store Location
Unit 9a, Central Trading EstateSO14 5JP, Southampton
Working Hours
MON–FRI 7am-5pmSAT 7am–12pm
External Wall Insulation FAQ
Get answers to the most common questions about external wall insulation systems
Q1 What is external wall insulation?
External wall insulation (EWI) is a system of insulation boards fixed to the outside walls of your property, finished with protective render. It creates a thermal barrier that can reduce heat loss by up to 33% and significantly lower energy bills.
Q2 How thick should external wall insulation be?
The optimal thickness depends on your property type and energy efficiency goals. Typically, 90mm to 150mm insulation boards provide excellent thermal performance while maintaining building aesthetics. Our Southampton specialists can assess your specific requirements.
Q3 How much does external wall insulation cost?
Costs vary based on property size, insulation thickness, and render finish. As a guide, expect £80-£120 per square metre for a complete EWI system. We offer free quotes and can help you calculate potential energy savings for return on investment.
Q4 Can I get grants for external wall insulation?
Various UK government schemes support EWI installations, including the Energy Company Obligation (ECO4) scheme. We can advise on current funding opportunities and help you access available grants to reduce installation costs.
Still Have Questions?
Our Southampton EWI specialists are here to help with expert advice and free consultations