Grants

SEAI Roof Insulation Grants (Ireland) | What You Can Claim in 2026

Grant rules and amounts change over time. Treat SEAI as the source of truth for eligibility, registered contractors, and pre-approval steps before work starts.

TL;DR

Quick summary for busy readers. These are the key cost takeaways to know before you compare contractor quotes.

  • Many homeowners combine insulation upgrades with roof works because access is easier while scaffolding is up.
  • Grants generally require SEAI-registered contractors and correct pre-approval workflows.
  • A roof replacement can trigger Part L upgrades in some cases—plan insulation early, not as an afterthought.

Why this matters for roof projects

If your project triggers a thermal upgrade under Part L, insulation can become part of the legal compliance path for the works, not just an optional comfort upgrade. Even when it is optional, it is often cheaper to do while the roof is open.

What to verify on the official side

  • Current grant values and eligible upgrade types on SEAI’s website.
  • Whether your contractor route needs SEAI registration for the grant pathway you are using.
  • Pre-approval requirements and documentation you must keep for payment claims.

Read hidden costs of roof replacement for Part L context, and use the roof cost calculator to baseline your overall budget before you speak with contractors.