Transform the Way Your Home Looks and Feels

External Wall Insulation is the ideal solution for older homes that lack cavity walls. It improves your home’s warmth, energy efficiency, and curb appeal — all in one upgrade.

A high-angle front view of a detached two-story house mid-renovation, featuring orange-brown external wall insulation boards partially installed on the upper story facade with active scaffolding on the right side.
A high-angle front view of a fully renovated, cream-colored detached two-story house with a green front door, a manicured lawn, and a pristine rendered facade, set against an expansive green countryside background.

What is External Wall Insulation (EWI)?

External Wall Insulation (EWI) involves fixing rigid insulation panels to the outside of your home’s walls, then finishing with a modern weatherproof render or cladding.

Our Manufacturers

Why choose External Wall Insulation?

Draught Reduction
A decrease in draughts throughout your home will increase your heat level
Heating Costs
Your heating costs could be reduced by 30–40%
Home Appearance
Your home will have an external modern finish improving overall appearance
A close-up shot of grey external wall insulation panels being fixed onto a red brick building facade beside an installer standing on an aluminum stepladder with cordless power drills handy.

Our External Wall Insulation System

We use high-performance EWI systems trusted across Ireland and Europe.

  • Insulation Boards: Typically 100mm Expanded Polystyrene (EPS) or Mineral Wool
  • Fixing Method: Mechanically fixed + adhesive
  • Finish Options: Acrylic render, dry dash, brick slip or colour-tinted coatings
  • Breathable, waterproof and long-lasting
An interior view of a room undergoing renovations, showing grey insulated plasterboards being fitted onto an internal wall structure to provide drylining and thermal insulation next to an open doorway.

Is My Home Suitable?

For costs not covered by grants, this scheme offers low-interest loans to homeowners undertaking energy upgrades.

  • Solid wall homes (pre-1980s)
  • Homes with poor insulation or constant cold spots
  • Properties undergoing renovation or redecoration
  • Detached and semi-detached homes with sufficient external space

If your home has cavity walls, Cavity Wall Insulation may be a more cost-effective solution.

An angled front view of a traditional semi-detached two-story house featuring a red brick ground floor, a grey pebbledash upper facade, a white front door, a concrete driveway leading to a garage, and a small front garden under a clear blue sky.

SEAI Grants Available

The Sustainable Energy Authority of Ireland (SEAI) offers generous grants for homeowners
installing EWI:

Detached House: Up to €6,000
Semi-detached / End of terrace: Up to €4,500
Mid-terrace: Up to €2,750

BlueBuild handles the full grant application process for you, making it easy to start saving sooner.

How Our Process Works

1
1
Free Survey/Suitability Assessment

We provide a no-cost home survey to assess your insulation needs and identify the best energy-saving solutions.

2
2
Tailored Insulation Proposal

We provide a no-cost home survey to assess your insulation needs and identify the best energy-saving solutions.

3
3
Help with SEAI Grant Application

We provide a no-cost home survey to assess your insulation needs and identify the best energy-saving solutions.

4
4
Professional Installation

We provide a no-cost home survey to assess your insulation needs and identify the best energy-saving solutions.

5
5
Post–Installation Inspection

We provide a no-cost home survey to assess your insulation needs and identify the best energy-saving solutions.

Recent Success Stories

BlueBuild technician delivering insulation rolls to a house next to a branded service van.
BER improved from E2 to C1 for a Rural bungalow in Cork
External Wall Insulation
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Exterior of a two-story residential house undergoing renovation. A prominent yellow and metal scaffolding structure is erected against the front facade.
Electricity bills reduced by 24% for a business in Kerry
Solar Panels
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A classic Irish cottage, featuring thick white-washed stone walls, a simple slate roof, a central chimney, and a red door.
Rural bungalow in Cork: BER improved from E2 to C1
External Wall Insulation
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A two-story red brick house with white-framed windows, a black front door under a small tiled canopy, and a green front lawn.
3-bed semi-D in Dublin: Heating bill down 27%
Attic Insulation
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Frequently Asked Questions on Insulation for your home

We’ve answered some common questions to help you with any concerns

BlueBuild boosts your home’s energy efficiency with top-notch attic and wall insulation. Our certified team supports you from consultation to installation. With SEAI Grants, we make these upgrades affordable, helping you create a cozier space while lowering energy bills and minimizing your carbon footprint.

BlueBuild boosts your home’s energy efficiency with top-notch attic and wall insulation. Our certified team supports you from consultation to installation. With SEAI Grants, we make these upgrades affordable, helping you create a cozier space while lowering energy bills and minimizing your carbon footprint.

BlueBuild boosts your home’s energy efficiency with top-notch attic and wall insulation. Our certified team supports you from consultation to installation. With SEAI Grants, we make these upgrades affordable, helping you create a cozier space while lowering energy bills and minimizing your carbon footprint.

BlueBuild boosts your home’s energy efficiency with top-notch attic and wall insulation. Our certified team supports you from consultation to installation. With SEAI Grants, we make these upgrades affordable, helping you create a cozier space while lowering energy bills and minimizing your carbon footprint.BlueBuild boosts your home’s energy efficiency with top-notch attic and wall insulation. Our certified team supports you from consultation to installation. With SEAI Grants, we make these upgrades affordable, helping you create a cozier space while lowering energy bills and minimizing your carbon footprint.

BlueBuild boosts your home’s energy efficiency with top-notch attic and wall insulation. Our certified team supports you from consultation to installation. With SEAI Grants, we make these upgrades affordable, helping you create a cozier space while lowering energy bills and minimizing your carbon footprint.

Ready to Enjoy a Warmer, More Energy-Efficient Home?

With over 13 years’ experience and a wide range of homes upgraded, BlueBuild can upgrade your home through the SEAI-registered contractors