About MJS ECO

Improving Homes Across Ireland

At MJS Eco, we specialise in delivering high-quality energy upgrades for homes across Laois, Dublin, Kildare, Offaly and surrounding counties. With over 20 years’ experience in carpentry and more than 10 years working within the retrofit sector, we have grown from a small three-man team into a trusted company delivering complete home energy solutions.

Our core focus is external wall insulation, windows and doors, and full retrofit upgrades. Over time, we recognised the close relationship between external wall insulation, airtightness, and overall home performance. This led us to expand our services to include windows and doors, attic insulation, cavity wall insulation, dry lining, and selected building works — allowing us to offer a more complete, joined-up solution for homeowners.

Today, as both NSAI-approved and SEAI-registered contractors under the Better Energy Homes Scheme, we are in a unique position to help customers access grants while delivering high-quality workmanship. With the introduction of SEAI grants for windows and doors, we can now provide a full upgrade package — helping transform homes into warmer, more energy-efficient spaces.

We work with homeowners looking to upgrade their properties, as well as builders and main contractors, providing a reliable, professional service from start to finish.

One Contractor. One Point of Contact. One Happy Customer.

We pride ourselves on:

Quality workmanship with clean, lasting finishes
Clear communication throughout every stage of the project
A straightforward, stress-free process
Expert guidance on SEAI grants and eligibility

Every home is different, which is why we tailor our solutions to suit Irish housing types and conditions, ensuring the best possible results for each project.

From small upgrades to full retrofits, MJS Eco is committed to delivering real results — creating comfortable, efficient homes that stand the test of time.

Our Vision

Our vision is to become a trusted leader in energy-efficient home improvement across Ireland. By combining innovation, sustainability, and professional service, we strive to help more homeowners build better, smarter, and more efficient homes for the future.

Our Mission

Our mission is to provide high-quality insulation and home improvement services using trusted materials, skilled craftsmanship, and a customer-focused approach. We are committed to delivering projects on time, maintaining clear communication, and ensuring every client receives results they can depend on.

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.