External wall insulation (EWI) wraps your home in a thermal blanket, reducing heat loss by 40-50% while transforming the external appearance. Perfect for solid wall properties where internal space is limited. For cavity wall homes, see our cavity wall insulation Manchester service.
Lower Energy Bills
Reduce heat loss through solid walls by 40-50%. Save £400-£700 per year on heating bills.
Transform External Appearance
EWI acts as a render — refresh tired brickwork, add a modern finish, and choose your colour. Silicone, acrylic, or mineral renders available.
No Internal Disruption
Work happens outside — no furniture moving, no room size reduction, no need to redecorate. If you prefer an internal solution, explore our internal wall insulation Manchester service.
ECO4 Grants Available
Eligible homeowners may receive fully funded EWI under ECO4. Learn more about our ECO4 scheme support and eligibility checks.
Improve EPC Rating
EWI significantly improves EPC rating — typically from E/D to C/B.
Solid Wall Properties
Not Suitable For
Component and Specification:
Roof Eaves Extension
EWI increases wall thickness by 100-150mm. Roof eaves may need extending to protect insulation from weather. We install eaves extensions or over-fascia ventilation trays.
Window and Door Reveals
Insulated reveals with compression seals prevent thermal bridging. We use insulated PIR boards for reveals (25-50mm thick).
Ground Level
EWI stops 150-200mm above ground with bellcast bead. Prevents damp bridging from ground.
Stop Beads at Junctions
Stop beads at windows, doors, corners, and roof lines. Provides clean finish and protects insulation edges.
We assess wall construction, roof eaves, windows, ground levels, and access. Check for planning permission or conservation area restrictions.
We specify insulation thickness, finish (silicone, acrylic, mineral), and detail all junctions. Handle planning permission if needed.
Erect scaffolding around property Clean walls (pressure wash) Remove downpipes, satellite dishes, external lights Repair any damaged brickwork or mortar
Apply adhesive to wall Fix insulation boards (adhesive + mechanical fixings) Install mesh embedded in base coat Apply primer Apply finish render (silicone, acrylic, or mineral)
We provide certification and BBA warranty. Re-fit downpipes, lights, etc.
A: 2-4 weeks depending on property size and complexity. Scaffolding erected week 1, installation week 2-3, finish render week 3-4.
A: Usually permitted development, but listed buildings and conservation areas (e.g., parts of Didsbury, Chorlton, Hale) may require permission. We advise on your specific property.
A: Yes. We offer a range of colours and finishes including silicone (self-cleaning), acrylic (durable), and mineral (breathable).
A: No. EWI includes breathable renders and proper detailing at ground level, windows, and roof to prevent damp. It can actually reduce condensation by warming external walls.
A: Yes, if you receive qualifying benefits or meet ECO4 Flex criteria. Contact us for a free eligibility check.
Book your free consultation today.
Call us on 0161 302 1985 to discuss your external wall insulation.
