External Wall Insulation

Warmer, More Efficient Homes with SEAI Grants

Upgrade your home’s comfort and appearance with SEAI-approved external wall insulation.

SEAI one stop shop

Grants offered are provided by the Government of Ireland through the Sustainable Energy Authority of Ireland (SEAI)

Why External Wall Insulation Matters

If your home has solid, stone or poorly insulated walls, external wall insulation is one of the most effective ways to improve its energy efficiency.

At Retrofit Design Ltd, we’ve completed hundreds of external wall insulation projects nationwide, helping homeowners reduce heat loss, cut heating costs and give their homes a modern, refreshed look.

With a proper external insulation system, your home stays warmer in winter, cooler in summer and far more comfortable all year round.

What Is External Wall Insulation?

External wall insulation ireland home exterior

External Wall Insulation (EWI) involves fixing rigid insulation boards to the outside of your home’s exterior walls, then applying a weatherproof render or decorative finish.
This creates a continuous, protective thermal layer around your property, reducing heat loss and enhancing your home’s appearance.

The process delivers:

  • Improved energy efficiency
  • Reduced heat loss
  • A clean, modern exterior finish

Benefits of External Wall Insulation

  1. Cut heat loss and improve indoor warmth
  2. Lower energy bills and heating demand
  3. Reduce condensation and mould growth
  4. Upgrade your home’s exterior look
  5. Increase property value and comfort
  6. Access SEAI retrofit grants 

SEAI Grants for External Wall Insulation

Irish homeowners can apply for SEAI insulation grants to help cover the cost of upgrading their homes.

SEAI one stop shop

Through the SEAI One Stop Shop or Better Energy Homes scheme, our team can assist you with every step of the process.

Our team will:

  • Confirm your eligibility for SEAI insulation grants
  • Handle the entire application process
  • Ensure your installation meets all SEAI standards
Retrofit design ireland OSS project management

Why Choose Retrofit Design Ltd?

  • SEAI-approved insulation specialists nationwide
  • Over 50 years’ combined experience in home energy upgrades
  • Trusted by homeowners and local authorities across Ireland
  • High-quality materials and professional finish
  • Quick, tidy installation with minimal disruption

FAQs - External Wall Insulation

How long does external wall insulation last?

Our systems are designed for a lifespan of 60 years or more when installed correctly.

Will it change how my home looks?

Yes, but for the better. You can choose from a range of finishes and colours to suit your home’s style.

Can I get a grant for external wall insulation?
Yes – SEAI grants cover a portion of the cost for approved installations.
1980s home retrofit Ireland upgraded from E2 to B2 BER
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Ready to Transform Your Home?

Upgrade your home’s energy efficiency, comfort and appearance with professional External Wall Insulation.

What our Customers Say

“I have to give Retrofit Design and their workers credit, as the communication was excellent throughout the works and works were completed more than I was expecting. They [Retrofit Design] kept me up to- date every day and worked around my needs with my children and pets, and always cleaned up after themselves. I would give them 100% credit for the work and communication”

Ann, Co. Laois

April 2023
Thanks to Retrofit Design for an amazing job, well done and to their team
Paul, County Cork
July 2024
Great works and workers. Everyone very friendly and helpful
Charlie, Cork City
October 2021