SEAI Attic Insulation Grant Requirements: 2026 Guide

Attic insulation is often one of the simplest places to start improving a home's energy performance. SEAI describes attic insulation as one of the most cost-effective upgrades available to a home.

Editorial note: Grant rules, amounts and eligibility can change. This article reflects SEAI information checked on 29 August 2026. Always confirm the live rules and your eligibility with SEAI before committing to works.

Affiliate disclosure: EcoPayback.ie may earn a commission from some products, services or installer referrals mentioned on the site. This does not change how we assess or explain the options.

Current SEAI attic insulation grant amounts

The standard individual attic insulation grants are:

Home type	Standard grant
Detached house	€2,000
Semi-detached / end of terrace	€1,500
Mid-terrace	€1,400
Apartment	€1,100

Higher amounts are available for eligible first-time buyers and homeowners on qualifying welfare payments:

Home type	Higher grant
Detached house	€2,500
Semi-detached / end of terrace	€1,900
Mid-terrace	€1,800
Apartment	€1,400

Who can apply?

SEAI's current attic-insulation guidance lists the following applicant types:

Owner occupiers
First-time buyers
Homeowners on qualifying welfare payments
Companies, including Owner Management Companies
Registered charities
Holiday homes
Approved Housing Bodies
Non-private and commercial landlords of tenanted properties

The home needs to have an MPRN and must have been built and occupied before 2011.

A special rule for apartments

The attic insulation grant is not simply available to every apartment.

SEAI says it is available to top-floor apartments, or apartments where heat is escaping from the roof to the outside. An apartment with another apartment directly above it is not eligible for the attic insulation measure.

Higher grant for first-time buyers

The enhanced attic grant for eligible first-time buyers has specific conditions.

You must:

Be a first-time buyer of an existing home
Have a home built and occupied on or before 31 December 2010
Have purchased the property on or after 1 January 2025
Meet the other scheme requirements

The higher grant applies to the attic insulation measure.

SEAI says the applicant must declare first-time-buyer eligibility during the online application and the application may be subject to verification audits.

How to apply

If you are managing the project yourself:

1. Find an SEAI registered contractor

Choose a contractor registered for the relevant work.

Get written quotations and compare:

Insulation specification
Ventilation provisions
Preparation work
Access requirements
Labour
VAT
Warranty
Total installed price

2. Apply for grant approval

You will need information including:

Your MPRN
Dwelling type
Year the home was built and occupied
Registered contractor details
The grant you are applying for

Do not start the work before you have grant approval.

3. Accept the offer

SEAI currently gives applicants 30 days to accept a grant offer.

4. Complete the work

You have eight months from the grant offer to draw down the grant.

5. Arrange the post-works BER

SEAI requires a post-works BER assessment for grant applicants drawing down the grant. A €50 BER grant is available towards this.

6. Submit the completion documents

SEAI lists documents including:

Declaration of Works Form
Request for Payment form
Tax Clearance Certificate where the relevant payment threshold applies

Grant payments are made to the nominated bank account once SEAI receives the required documents. SEAI currently advises allowing 4–6 weeks to process grant payments.

What does good attic insulation involve?

A good attic upgrade is not simply a matter of throwing insulation between the joists.

The contractor should consider:

Existing insulation
Depth and continuity of insulation
Thermal bridges
Eaves ventilation
Water tanks and pipes
Electrical cables
Loft boarding
Access
Roof construction
Condensation risk

The correct approach depends on the home's construction.

Should you board over the insulation?

If you need storage, discuss the design before the insulation is installed.

Compressing insulation can reduce its effectiveness, and simply placing a standard floor over a deep layer of insulation may not be the correct detail.

Ask your contractor to explain how any required storage platform will be constructed while maintaining the intended insulation performance.

Common attic-insulation mistakes

Starting before approval

This can jeopardise the grant.

Choosing insulation thickness based on price

The cheapest quote is not automatically the best technical solution.

Blocking ventilation

Roof and eaves ventilation should be considered as part of the insulation design.

Ignoring pipes and tanks

Cold-water pipes and tanks in an attic need appropriate treatment when the attic becomes colder after insulation is improved.

Treating every attic as the same

Traditional roofs, apartments, storage spaces and different roof constructions need different solutions.

Is attic insulation worth doing before a heat pump?

Potentially, and the broader principle is important: reduce heat loss before sizing a new heating system where practical.

SEAI says heat pumps perform best in well-insulated homes. If your home is poorly insulated, dealing with the building fabric can make the later heating upgrade easier to assess.