The cheapest warm in the house.
About 30% of a home's heat drifts out through the roof, and most Irish attics are running on a few centimetres of tired old insulation. Topping it up to modern depth takes half a day — and the SEAI grant covers most of the bill.
Leinster basedA 3-bed semi typically pays
€450 – €1,200
after the grant
30%
of a home's heat is lost through an under-insulated roof
€2,000
the top SEAI attic grant — most semis get €1,300, and we do the paperwork
½ day
a typical install — warm that same night
How the grant works
Up to €2,000
Approved before the work starts, then paid into your bank a few weeks after it’s done — we handle the application and the paperwork. Figures as of 2026-10-26. Rates vary by house type — your exact grant shows in your estimate.
Is it right for my house?
A good fit if…
- A home built and occupied before 2011 — that's what unlocks the grant
- An attic that's empty or used for storage — boards and boxes are no bother
- Insulation that's thin, patchy or older than the millennium
- Anyone doing a heat pump later — this is the step that makes the numbers work
Probably not, if…
- Built after 2010 — no grant, and your attic is likely already done to modern regs
- An attic converted into a room — that's a rafter job, priced properly at a survey
- Already topped up to 300mm — you're sorted; spend the money on the walls instead
What's in the price
the docket- Mineral wool topped up to modern depth (300mm)
- Ventilation kept clear at the eaves — the detail bad jobs skip
- Water tank and pipes lagged, attic hatch insulated
- SEAI grant paperwork — we handle the claim
Not on this docket
- New flooring or storage decking (we can price raised decking that protects the insulation)
- Rafter insulation for converted attics — surveyed and priced separately
No surprises at the till — anything extra is named at the free survey, never on the invoice.
toasty.ie
The install
- measure
1
Book it
Pick a morning. The crew needs attic access and an hour of parking — that's the whole ask.
- install
2
Half a day's work
Old gaps sorted, new wool rolled to 300mm, eaves ventilation kept clear, tank and pipes lagged.
- enjoy
3
Warm that night
You'll feel it the first cold evening — rooms hold their heat instead of leaking it through the ceiling.
The questions everyone actually asks
Do I qualify for the grant?
If your home was built and occupied before 2011 and the work's done by an SEAI-registered installer, yes — up to €2,000 depending on house type, and we handle the paperwork.
I already have some insulation — does a top-up still qualify?
Usually yes. If what's there is below current standards, topping up to 300mm qualifies for the full grant.
Can I still use the attic for storage?
Yes — we can fit raised decking over the insulation so your boxes sit above it without squashing it flat (squashed insulation stops working).
How long does it take?
A typical semi is half a day, start to finish, with no mess in the house below.
My attic is converted into a bedroom — can you still insulate it?
Yes, but along the roof slope rather than the floor — a different job that needs a survey to price honestly.
See your price — before you talk to anyone.
A few quick questions, an honest estimate, and a free survey if you like what you see.