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  • Energy Efficiency Retrofit Experts

Upgrade Your Home With Professional Insulation & Energy Upgrades

Helping homeowners across Leinster & the Midlands improve comfort, reduce heating bills and navigate SEAI grants.

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SEAI Registered Contractor
Fully Insured & Certified
Serving Leinster & Midlands
  • SEAI Grants

SEAI Grants & Home Energy Upgrades

Upgrade your home with the help of SEAI grants and make it warmer, more energy efficient, and more comfortable all year round.

At MJS Eco, we specialise in energy upgrades including external insulation, windows & doors, attic insulation, dry lining, and cavity wall insulation — all supported by available SEAI grants.

SEAI Grants
  • Derryguile, Mountmellick, Ireland
Benefits
  • Reduce heating bills
  • Improve comfort throughout your home
  • Increase property value
  • Upgrade the appearance of your home
  • Our Professional Services

Everything You Need to Upgrade Your Home

External Insulation

Improve your home’s thermal performance and exterior appearance with high-quality external wall insulation systems designed to reduce heat loss and lower energy bills.

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Windows & Doors

Energy-efficient windows & Doors that enhance natural light, security, and insulation while improving the overall look of your home.

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Attic Insulation

Reduce heat escaping through your roof with professional attic insulation solutions that keep your home warmer year-round.

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Cavity Insulation

Efficient cavity wall insulation that prevents heat loss and significantly improves your home’s energy rating.

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Dry Lining

Internal wall insulation and finishing systems that improve thermal performance and create smooth, modern interiors.

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Building Works

Complete building and renovation services to support insulation upgrades and home improvement projects.

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  • Our Service Areas:
  • Serving Laois
  • Kildare
  • Dublin
  • Offaly & surrounding counties
Explore All Services

Why Choose MJS Eco?

  • Specialists in Energy Upgrades & Building Works
    From insulation and windows & doors to selected building works, we deliver complete home improvement solutions.
  • Quality You Can See
    Clean finishes, attention to detail, and work that stands the test of time. 
  • Guidance You Can Trust
    We help you navigate SEAI grants with confidence and clarity. 
  • Real Homes, Real Results
    See before & after transformations from projects across Dublin. 
  • Straightforward Process
    No confusion, no stress — just a smooth, professional experience. 

Built for Irish Homes
Solutions tailored to local housing types and conditions.

Years of Experience
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Homes Insulated & Upgraded
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Customer Satisfaction Rate
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Fully Insured & Certified Team
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  • Previous Work

Take a Look at Our Work

  • Howth
  • Sutton
  • Donnybrook
  • Castleknock
  • Mountmellick
  • Seapark
Explore All Works
  • Before & After

See the Transformation

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  • Client Stories

What Our Clients Say About Working With Us

“We recently had external insulation completed by MJS Eco and the results are fantastic. Our home feels much warmer, and the finish has completely transformed the exterior. The team was professional, tidy, and completed the work on time. Highly recommended.”
Patrick O’Connor

Portlaoise

“From the first consultation to the final handover, everything was handled professionally. The crew worked efficiently and kept the site clean. We’ve already seen an improvement in our energy bills.”
John Murphy

Dublin

“Reliable, skilled, and very detail-oriented. The external insulation has completely changed the appearance of our home. The whole process was smooth and stress-free.”
David Walsh

Laois