Wall Insulation Contractors in Sligo
22 SEAI-Registered Installers in Sligo. Compare Contractors, Check Grant Eligibility and Get in Touch Directly.
SEAI-Approved Wall Insulation Contractors in Sligo
Wall insulation contractors in Sligo are registered under the SEAI Better Energy Homes scheme, with 22 approved installers covering cavity wall, external wall and dry-lining across Connacht. All are eligible to carry out grant-assisted works and can handle the SEAI application on your behalf. Through a One Stop Shop the grant comes off the price upfront; apply yourself and SEAI pays you once the work is signed off.Specialists in cavity wall (3 contractors), external wall insulation (3), dry-lining (21) are included in the listings.
SEAI grants in Sligo range from €1,800 for cavity wall up to €8,000 for external wall insulation (amounts as of July 2026). Most homes built before 2011 qualify. Browse the listings below and use our SEAI grant guide to confirm your eligibility.
Choose the Measure You Need in Sligo
The 22 contractors registered in Sligo do not all do the same work, so the lists are split by measure. Pick the one you need and you get only the contractors who hold it, with the costs and grant for that job.
A contractor holding more than one measure appears on each list they qualify for, which is why the numbers above add up to more than 22.
SEAI-Registered Insulation Contractors in Sligo
Every contractor covering Sligo, 22 of 22 with direct contact details. The lists above split them by measure if you already know which job you need.
Nothing matches that. Try a county name, or clear the search.
SEAI Better Energy Homes 2026
SEAI Grants for Wall Insulation in Sligo
All contractors listed here are registered under the SEAI Better Energy Homes scheme. They carry out grant-eligible wall insulation works and can handle the SEAI application. Through a One Stop Shop the grant comes off the price upfront; apply yourself and SEAI pays you once the work is signed off.
- No income test: open to all homeowners
- Houses built and occupied before 2011 are eligible
- Grant off the price upfront through a One Stop Shop, or paid to you after the works if you apply yourself
- Combine multiple measures for a higher total grant
Wall Insulation in Sligo
Homes across Sligo are eligible for SEAI Better Energy Homes grants for cavity wall, external wall and dry-lining insulation. Most properties built before 2011 qualify, and there is no income test. The grant is available to all eligible homeowners regardless of income.
The contractors listed above are SEAI-registered and can advise on which type of insulation suits your property in Sligo. They can handle the full SEAI grant application on your behalf. Through a One Stop Shop the grant comes off the price upfront; apply yourself and SEAI pays you once the work is signed off.
Which Type of Insulation Suits Your Home?
Cavity wall insulation suits homes built after 1930 with a clear, dry cavity. It is the most affordable option and is typically completed in a single day. External wall insulation is suitable for any wall type and delivers a larger thermal improvement, but costs more and takes longer to install.
Before you call a contractor, read our cavity wall insulation guide or external wall insulation guide to confirm which type suits your home. Our SEAI grant guide explains the full process, and the 2026 cost guide covers typical prices before and after grant. If you are planning a wider retrofit, our SEAI home energy upgrades guide sets out the whole journey in order, from insulation to heat pump and solar.
Insulation Guides for Sligo Homeowners
Understand your options, check grant amounts and learn what to expect before you hire a contractor.
Find Wall Insulation Contractors in Sligo Today
Wall insulation contractors in Sligo are listed here by area, all SEAI-registered under the Better Energy Homes scheme. Browse, compare and contact approved installers directly, with grants of up to €8,000 towards the work.