Transform the Way Your Home Looks and Feels
What is External Wall Insulation?
External Wall Insulation (EWI) involves fixing rigid insulation panels to the outside of your home’s walls, then finishing them with a modern, weatherproof render.
Result: Your home feels warmer, looks better, and costs less to heat.
Why choose External Wall Insulation?
Is My Home Suitable?
We recommend a free survey to confirm suitability, but generally:
- For solid‑wall and hollow‑block homes
- Homes with poor insulation or constant cold spots
- Properties undergoing renovation or redecoration
- Detached, semi-detached and terraced homes with sufficient external space
If your home has cavity walls, Cavity Wall Insulation may be a more cost-effective solution.
Our External Wall Insulation System
We use high-performance EWI systems trusted across Ireland and Europe.
- Insulation Boards: Typically 100mm Expanded Polystyrene (EPS) or 120mm Mineral Wool
- Fixing Method: Mechanically fixed + adhesive
- Finish Options: Acrylic render, dry dash, brick slip or colour-tinted coatings
- Breathable, weatherproof and long-lasting
SEAI Grants Available
The Sustainable Energy Authority of Ireland (SEAI) offers generous grants for homeowners
installing EWI:
BlueBuild will support you through the grant application process from start to finish.
How Our Process Works
Typical EWI installations take 7–10 working days, depending on property size and weather conditions.
Frequently Asked Questions on Insulation for your home
We’ve answered some common questions to help you with any concerns
Soltherm External Wall Insulation systems come with a manufacturer-backed 30-year guarantee when installed by approved installers.
Yes — for the better. You’ll choose a new exterior finish, colour and texture.
In most cases, no. If you’re changing the external appearance significantly (e.g., a colour change in protected structures), we’ll advise.
Minimal. All work is external, and we protect all surrounding areas. You remain in your home throughout.
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