Warm Your Home from the Top Down

Up to 30% of your home’s heat is lost through the roof. Loft insulation is a fast, affordable upgrade that locks in warmth and slashes heating costs — with minimal disruption.

What is Loft Insulation?

Loft (or attic) insulation involves installing layers of insulating material in your roof space to stop heat rising and escaping.

We offer cold Loft Insulation (insulating the attic floor).

Key Benefits of Loft Insulation?

Improved Thermal Comfort
Reduced heat loss = warmer rooms below
Lower Heating Bills
Save up to 25% on annual energy costs
Fast & Non-Disruptive Installation
A BlueBuild project manager conducting a home consultation with residential clients.

Is My Home Suitable?

  • Homes with pitched roofs and uninsulated or poorly insulated attics
  • Attics with access via hatch or stairs
  • Homes experiencing uneven heat distribution or cold ceilings
  • Homes with unoccupied & unheated attic spaces.

We’ll assess your attic space during our free survey and recommend the best insulation method for your layout and budget.

An insulation installer wearing a protective dust mask and headlamp kneeling inside a residential attic spaces to unroll a bundle of mineral wool insulation between wooden roof rafters.

What’s Included in Our Service

  • Insulation of attic floor to SEAI specification (typically 300mm)
  • Ventilation upgrades to prevent condensation build-up
  • Water tank and pipe lagging for freeze protection
  • Insulated and draught-proofed attic hatch
  • Optional attic flooring over insulated areas for storage
A smiling woman wearing a headset takes notes with a pen while looking toward her open laptop at a wooden desk in a bright office environment.

Northern Ireland Grants for Loft Insulation

Homeowners in Northern Ireland may be eligible for support through a range of government-backed energy efficiency schemes — helping to reduce or even fully cover the cost of installation.

Available support can include:

  • NISEP (Northern Ireland Sustainable Energy Programme) – including fully funded options for eligible households
  • Affordable Warmth Scheme for lower-income homes
  • Potential support through local council or energy supplier initiatives

Our team will:

  • Assess your eligibility during your free survey
  • Guide you through the most suitable funding options
  • Handle the application process where applicable

👉 Find out if you qualify for fully funded loft insulation on our Residential Grants page.

Our 4-Step Installation Process

1
1
Free Attic Survey

We check your current insulation and ventilation

2
2
Tailored Insulation Proposal
3
3
Professional Installation

 in 1 day or less

4
4
Final Check & BER Upgrade

Frequently Asked Questions on Insulation for your home

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

We use mineral wool or glass wool, compliant with SEAI standards and safe for Irish homes.

Yes — we can install raised flooring sections on top of the insulation so you don’t lose usable space.

Absolutely. If your existing insulation is less than 300mm thick, we can add to it to meet current standards.

Most loft insulation jobs are completed in less than a day.

Hear from Our Customers

  • Thanks so very much for the wonderful work has been done to my house blue build energy fantastic people from office to work men and big thanks to David for all his hard work regards Richard gill
    Richard Gill
  • Exceptional quality. Let me tell you how we found out about Blue Build (it certainly wasn't the usual way... thanks, or should I say no thanks, to my wife Anne). We have a south-facing roof at the back of our house, and we always thought that we should get solar, being south-facing, but were always put off by the cost (this was about 10 yrs ago). Then about 2 yrs ago, my wife, who is a keen ukulele player, happened to be out at her weekly band practice when she was talking to a friend about solar energy. This friend said to her that she had it and she had got a local firm that did it. She was a teacher and had taught the guy that sold it to her. Anyway, my wife came home and told me about this friend having solar and all the benefits of making money from the extra energy going back to the grid. I asked her who the installers and she said, "I don't remember, but it had a colour in it's name, and this lady had taught the owner" I replied, "Was it Blue Build?" and she enthusiastically replied, "Yes, that's the company. So we headed off to find Blue Build, who had moved from Balloo Industrial Estate to Quarry Heights, Newtownards. We spoke to a young guy who was very helpful, and he asked me who had recommended them to us, and I went into this story about a teacher who had possibly taught him, and that wife couldn't remember the installers other than a colour in their name. He looked a bit puzzled but came out to our house in Bangor within an hour to do a survey, and because they had been 13 yrs in business, gave us a quote for 13 solar panels, an inverter and a Duracell Battery. It was much cheaper than we had been quoted some 10 yrs previous (obviously technology had moved on and things where now much cheaper). They came and did a fantasic job, really neat and tidy and in the first year we received nearly £500 from Power NI because of the surplus going back to the grid. Also our electricity bills dropped from about £150 -£200 a quarter to about £50 for a 2000 sq ft house with 3 reception rooms and 4 bedrooms, kitchen and utility room and a double garage. Now here is the bit in the story that always gets me. I happened to be at one my wifes Ukelel gigs and I got talking to my wifes friends husband who had supposely recommended Blue Build. I said, "Thanks to your wife we got Blue Build to install our Solar sytem and they were fabulous from the price to the installation.....it was fabulous, so thanks for recommending them to us" He looked puzzled and said, " We didn't get Blue Build to install our Solar System". "What?" I said, "you didn't?" but my wife said there was a colour in the name, and he laughed and said, "No, there was no colour in the name". I just couldn't believe it my wife had made that mistake about the colour in the name, but in saying that, I am delighted we went with Blue Build as they are so, so helpful and nothing is a bother to them, and we have a fantastic system that saves us money every single day and it works without doing anything to it. I recently bought an EV car and am using the solar to help charge the car. The other night I charged the car from 2% to 78% for about £9, and that gives me about 270 miles. I would thoroughly recommend Blue Build for Solar Installation; they are absolutely brilliant
    Harry Kerr
  • We decided we wanted to get a solar system for the house. So first things first did a bit of research online on local solar companies I had three different companies give me a quote. One of these companies was Bluebuild. First I had a call from a lovely guy called Ian Millar he came to have a look round my property then he sent me through a full layout of what would take place should I go with them. After speaking to the other two companies I found Ian to make the most sense plus I wanted to go with panels on the front and back of the house but Ian insisted that I ONLY needed 12 on the front. This in its self proved that they weren’t money grabbers they told you the truth this is VERY hard to get in this day and age. Anyway I decided that bluebuild was the guys to go with and I’m so glad I did … what a genuine top company I would have given them ten stars… from the guys with the scaffolding arrived to the full install was carried out all totally professional people and all nice guys to boot. Saving on my electric already…I am a very sceptical person and find it hard to trust anyone honestly if your thinking about going down the solar route please don’t go anywhere else this company has to be the best in the six counties. Thanks again Bluebuild👍👍😃👍👍
    Alan McClintock
  • Bluebuild Energy recently insulated my house and upgraded my heating system. I would highly recommend Jason and his team. They were so efficient and professional. 5 stars from me.
    Martin Byrne
  • From the very beginning, we have had excellent communication with Bluebuild. Vassily and his team are very hard workers and Fionn did a great job in the attic. Jason ensured that everything was reinstated perfectly. We are delighted with the job....... Michael and Jenny, Co. Wicklow
    Michael Purcell
Google Reviews
Rated 4.6 out of 5 stars on over 100+ reviews

Keep the Heat Where It Belongs — In Your Home

Our team can help you access SEAI grants, choose the best insulation method, and install  everything in one clean, professional visit.

  • • IAA -Registered Contractor
  • • Fully Qualified Installers
  • • 13+ Years’ Experience
  • • Satisfaction Guarantee