EXTERNAL WALL INSULATION
EXTERNAL WALL INSULATION
A thermal layer fixed to your property’s external walls, finished with a protective render to reduce heat loss and improve appearance.
Best for:
Solid‑wall homes, refurbishments, and energy‑efficiency upgrades.
Typical timeline:
5–10+ days for a standard semi.
Expected benefits: Lower heating b ills, improved comfort, refreshed façade, reduced condensation risk.
Finishes & options
Silicone thin‑coat colours and textures
Render beads, trims, corner protection
Brick‑effect and feature bands
Breathable mineral wool systems for period homes
Why choose Smart Building Solutions for EWI
NWQ‑qualified team with extensive rendering expertise
Premium, warrantied systems and finishes
Clean, considerate installation and clear communication throughout
Our process
Survey & specification
Substrate prep & fixings
Insulation boards (EPS/mineral wool as specified)
Basecoat + mesh reinforcement
Primer + decorative finish (e.g., silicone render)
Final QA and care briefing
Pricing guidance
EXTERNAL WALL INSULATION
Our Most Efficient Year
Every property is different; factors include substrate condition, access, detailing, chosen system and finish. We provide fixed quotes after survey.
Is planning permission needed?
Usually not for like‑for‑like finishes, but conservation areas or major appearance changes may require consent.
Will EWI cause damp?
Correctly specified, EWI helps manage moisture and reduce condensation risk by warming internal wall surfaces.
How long does it last?
High‑quality systems offer long‑term durability when maintained per manufacturer guidance.
Working With The Best
Our Partners
