42 Years as a Family Run Business

Fitzsimons Attic & Wall Insulations

Fitzsimons Insulations is now in its 42nd year as a family-run business specialising in domestic insulation and commercial thermal insulation, airtightness, passive fire protection, dry-lining and cavity wall insulation.

In recent years, we installed insulation upgrades to 1,300 local authority houses in Co. Kildare. This included Attic Insulation & Draught-Proofing. Our most recent involvement in the Better Energy Warmer Homes Scheme involving attic and cavity wall insulation has seen our crews working in places such as Dungarvan, Dunmore, Gort, Kilrush, Kinsale, Lettermore, Lixnaw, Moyne, Ravensdale, Renvyle and Swanlinbar to name but a few.

Fitzsimons Attic Insulation Dublin

Insulating Your Home as if it Were our Own

Our Services

Grants available

Grants Available

Save money on the cost of your insulation

Save on bills

Save on your Electricity Bill

Reduce your heating bill by up to 30%


A Warmer, Happier Home

Enjoy a warmer home and an increased BER

Success Stories from Happy Clients

Customer Testimonials

I would highly recommend Fitzsimons Insulation, very professional service, no mess afterwards and all the work was carried out to a very high standard. Very competitive prices.

Sarah-Jane Byrne

The insulation in my attic has made such a huge difference to the heat in my house. Great service from start to finish, very high standard of work! I can warmly recommend.

Johanna Gillen

Great company, delighted with the job done. Peter, Eddie & all the staff are very friendly and professional. Worked around my schedule and tidied up every day.

Janine Coll

I can highly recommend Fitzsimons Insulations, their work is excellent, from turning up on time, craftmanship, tidiness, and value for money. Peter and his team are very very professional, delighted with the work they carried out on my attic.

Loraine Sherry

Peter and his team were a pleasure to work with. Very professional with excellent time keeping, attention to detail and flexible to any requests we had. I would highly recommend them

Carraig Rushe

Peter and all the team were totally professional and carried the work out to a very high standard. Nothing was too much trouble for them and all at a very competitive price. Delighted I got it done and delighted I used Fitzsimons Insulations.

Eleanor Harper

Had Peter and the crew out yesterday to insulate the attic fantastic job excellent advice from start to finish couldn’t be happier. I would totally recommend them. Thank you guys.

David Smith

Superb workmanship and service competitively priced for attic and walls insulated and benefited in having a much warmer and sound proof house. Thanks Peter and team and highly recommend you.

Connie Higgins

We are Accredited & Certified by

Certifications & Accreditations

NSAI logo
SEAI logo

Reliable insulation services since 1980. Our primary aim is to insulate your home as if it were our own.


T. +353 1 8391111


Registered in Dublin, Ireland
No. 151715 – VAT. No. 6549115H

Fitzsimons Holdings Ltd

t/a Fitzsimons Insulations
Unit 55 Baldoyle Industrial Estate
Dublin 13, D13 NF21, Ireland