Cost and quote guidance
A standard accessible Cork attic job is often €600–€1,500 gross before grant, or roughly €0–€600 net when an eligible SEAI attic grant applies. Larger or full-replacement jobs are often €1,200–€2,500 gross. Spray foam is a separate band.
A standard accessible-attic mineral-wool job is often €600–€1,500 gross, and can drop to roughly €0–€600 net after an eligible SEAI grant. Larger or full-replacement jobs are often €1,200–€2,500 gross. Spray foam sits in a separate band, often €1,400–€3,000+.
These are typical Irish estimates, drawn from contractor price guides and retail material pricing. Your exact price depends on the size and condition of your attic, whether old material has to come out, and what the quote includes — so get a quote or call to pin it down.
A small or medium attic where the existing insulation can stay
€400–€900
Usually means adding mineral wool to bring an under-insulated attic closer to the required depth. Repairs, clearing storage or removing damaged material cost extra.
An accessible attic of roughly 60–90 m²
€800–€2,000
This is the most useful range for a standard installation where there is little usable insulation and no major access or moisture problem.
A larger detached home, awkward layout or restricted access
€1,500–€3,500+
More floor area, low headroom, several roof sections or work around tanks, wiring and downlights can move the quote towards the top end.
Old, damaged or contaminated material that cannot remain
€2,000–€4,000+
This is a provisional Irish range because removal is often priced separately. Ask for removal, disposal and the new installation as individual lines.
Insulating the sloping roof rather than the attic floor
€1,500–€3,500+
This is a different job from a standard ceiling-level mineral-wool installation and may not qualify for the same grant route. Get the proposed system and ventilation approach in writing.
€600–€1,800
Typical for about 30 m². Raised boarding, lighting, shelving or a larger storage area can cost more.
€400–€700
A standard fitted ladder or hatch improvement. Structural widening is normally quoted separately.
Quote separately
No independently verified Cork labour range. Irish vent units are typically a few euro each as materials only. UK labour guides are not Cork prices.
Roughly €50–€200
A low-confidence estimate for a small add-on. The exact amount depends on the tank and length of exposed pipework.
Ask for the measured attic area on the quote. A simple rectangular attic is quicker to cover than a roof space split into several sections or filled with hard-to-reach corners.
If access is tight, the installer may need more preparation time or a hatch improvement before work starts. Ask whether access work is included or will be charged separately.
Existing insulation does not always need to come out. Ask whether it can stay, be corrected or be topped up. If removal is recommended, get the reason, disposal method and price in writing.
The quote should name the material, planned depth and area covered. Compare the same specification across quotes rather than choosing from the final total alone.
Stored belongings and existing floorboards may need to be cleared, lifted or raised so the insulation is not compressed. Confirm who moves everything and whether reinstatement is included.
Ask how the installer will handle tank jackets, pipe lagging, downlight covers, wiring and chimneys. These items are often included in a good scope but should not be assumed.
Adding insulation without protecting airflow can create problems. Ask whether eaves ventilation has been checked and whether any leak, damp or condensation work needs to happen first.
Check whether the price includes bags, disposal, cleaning up, VAT and any paperwork needed for a grant. If anything is excluded, ask for the likely extra cost before agreeing to the work.
For example, a qualifying semi-detached homeowner with an eligible €1,800 attic job and a €1,500 standard grant could be left with about €300 to pay. This is only an example: grant approval and eligibility still need to be confirmed, the grant cannot be assumed for every job, and work should not begin before the required approval is in place.
Check current grant amounts and steps →The ranges combine Irish contractor price guides, published Irish cost guides, retail prices and homeowner reports. Cork-only published prices are limited, so broader Irish figures are included.
Current official grant amounts and application route.
Irish dwelling-type cost ranges and grant comparisons.
Munster contractor guide with Irish total-job and material ranges.
Irish house-size and material cost comparisons.
Munster removal pricing used to sense-check removal-and-replacement estimates.
Irish boarding, raised-floor and hatch cost ranges.
Anecdotal Cork comparison of DIY material cost, contractor pricing and grants.
Call for a chat about your attic, or send the details and get a call back.
FAQs
A straightforward top-up or standard mineral-wool installation will often cost about €600–€2,000 before a grant. Large, difficult or removal-and-replacement jobs can cost €2,000–€4,000 or more. These are rough Cork and Irish estimates rather than fixed quotations.
Usually. If the existing insulation is dry, usable and can stay in place, a top-up may cost roughly €400–€900. Removing old or damaged material first can move the job into a much higher price range.
No. It may be possible to leave it in place and add more. Ask why removal is recommended and get removal, disposal and replacement priced separately before agreeing to it.
It can reduce an eligible standard job substantially. As a simple example, a €1,800 semi-detached attic job minus a €1,500 standard grant would leave about €300. Your home, contractor, work and application must qualify, so confirm the current amount and receive approval before work starts.
Share attic size, access notes and whether you also have a grant question.
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