Attic and Roof Insulation Contractors in Donegal, from Letterkenny to Donegal Town and Surrounding Areas
77 SEAI-registered attic and roof insulation contractors based in Donegal. Contact them directly, with no middleman and no fee.
Attic and Roof Insulation in Donegal
Heat rises, and in a house with a thin or settled layer of attic insulation it keeps going straight out through the roof. Laying a proper depth of mineral wool between and over the joists is the cheapest way to stop that, and on most houses it is a job of hours rather than days.
What the housing stock here is made of. A high proportion of stone and solid-block walls, including render-on-stone that was never designed to keep heat in.
Contractors listed on this page work across Donegal, including Letterkenny, Buncrana, Ballybofey, Stranorlar, Bundoran, Donegal Town, Carndonagh and Ballyshannon. Most travel well beyond their registered address, so a contractor based a county over is worth ringing rather than ruling out.
This page lists only the attic and roof insulation contractors in Donegal. To see every insulation contractor in Donegal regardless of measure, use the county directory.
SEAI-Registered Attic and Roof Insulation Contractors Based in Donegal
Listed where the company is registered. Search by company name, or by a county to see who covers it.
Nothing matches that. Try a county name, or clear the search.
What Attic and Roof Insulation Costs in Donegal
These are indicative market ranges to help you judge whether a quote is in the right area, not a price. What a job actually costs turns on the size and condition of the property, the state of the existing render or walls, access and scaffolding, the finish chosen and how exposed the site is. Get at least two quotes from SEAI-registered contractors.
Before the Grant
€700 to €1,200
Indicative for a three-bed semi. The low end is an open loft in a three-bed semi. The high end is a converted attic with slopes, dwarf walls and the flat ceiling all treated.
SEAI Grant
up to €2,000
Up to €1,700 for attic insulation and up to €3,000 for internal roof insulation in a converted attic, depending on property type. Your home must have been built and occupied before 2011.
What You Actually Pay
€0 to €0
An open attic is often close to fully covered. A converted attic leaves more. Compare quotes on which surfaces are included, not on the headline figure.
Other Insulation Work Covered in Donegal
The same register covers every measure. These are the other types with contractors based in Donegal.
Attic and Roof Insulation in Donegal: Common Questions
How Many Attic and Roof Insulation Contractors Are There in Donegal?
There are 77 SEAI-registered attic and roof insulation contractors based in Donegal. Every one is drawn from the official SEAI register, which is what keeps the work grant-eligible.
How Much Does Attic and Roof Insulation Cost in Donegal?
As indicative market guidance rather than a price, a three-bed semi runs €700 to €1,200 before any grant, with the SEAI grant currently up to €2,000 and most homeowners left with €0 to €0. Donegal being a rugged Atlantic coastal county in the northwest means access varies, and a quote should always come from a contractor who has seen the house.
Which Towns in Donegal Are Covered?
The contractors listed here work across Donegal, including Letterkenny, Buncrana, Ballybofey, Stranorlar, Bundoran, Donegal Town, Carndonagh and Ballyshannon. Most travel well beyond their registered address, so it is worth ringing a contractor based a county over rather than assuming they will not come.
Is My Donegal Home Suitable?
A high proportion of stone and solid-block walls, including render-on-stone that was never designed to keep heat in. If you can get into the attic and see the joists, it is the cheap job, and it is almost always worth doing. The question is usually not whether to insulate but whether you are topping up or starting again, since an attic that looks insulated from the hatch is frequently insulated to a third of what it should be.
How Is the SEAI Grant Paid in Donegal?
Through a One Stop Shop the grant comes off the price upfront. Apply yourself and you pay in full, then SEAI pays you back once the work is signed off. The grant for attic and roof insulation is up to €2,000, checked against SEAI on 31 July 2026. It works the same way everywhere in the country, so there is nothing specific to Donegal beyond choosing a contractor on the SEAI register, which every contractor on this page is.
Compare Attic and Roof Insulation Quotes in Donegal
Contact the contractors above directly and get three quotes before committing. Every one is on the SEAI register, which is what keeps the grant available to you.