How we put this list together
This is an editorial comparison page, not a paid directory. The contractors listed below are visible through SEAI's contractor list, Cork business directories, and verified web presence as of April 2026. We've added our own observations on specialism and approach. We are not affiliated with any of the named contractors. We may, in future, take a flat-fee referral from contractors who receive a quote enquiry through this site — that fee won't influence editorial inclusion or ordering.
| Contractor | Base | Focus | SEAI registered |
|---|---|---|---|
| HPS Group | Carrigaline, Cork | Insulation (cavity, attic, EWI), uPVC windows + doors, building services | Yes (per their published material) |
| EcoWrap | Cork city, regional | External wall insulation specialist (EWI) | Yes |
| EnergyEfficiency.ie | National, Cork delivery | Cavity wall insulation, retrofit consultancy | Yes |
| Save On Heat | National, Cork delivery | Heat pumps, retrofit assessments | Yes |
| Smaller specialists | City + county | Various — attic-only, cavity-only, attic + cavity | Mixed (always verify) |
HPS Group — what they do, what they're known for
HPS Group is a long-established Cork construction and energy-upgrade business based at The Boatyard, Church Road, Carrigaline, run by the Healy family. The trading company has been visible in Cork since at least 2012, with a freephone (1800 636363) that's been on their material for years.
Their published service range covers building services, uPVC windows and doors, insulation (cavity wall, external wall, attic, dry lining), pitched and flat roof insulation, and SEAI grant administration. The dual focus on building work + insulation + glazing in one shop is unusual — most Cork insulation specialists do one of those, not all three.
Where they tend to fit: homeowners who want a single contractor for a full-fabric upgrade (attic + cavity + windows + maybe a porch or roof) rather than coordinating three separate trades. Where a single-measure specialist often beats them: pure EWI work, where dedicated specialists like EcoWrap have deeper system-specific expertise.
Note: HPSGroup.ie is an independent retrofit guide and is not affiliated with HPS Group (Carrigaline). Information on HPS Group above is drawn from publicly available sources including their published service material and Cork business directories.
EcoWrap — what they do
EcoWrap is a Cork-based external wall insulation specialist. Single-measure focus — they do EWI, full stop, with the system-specific expertise that comes from running 100% of their work in one product category. For homes where the right answer is EWI (older solid-wall builds, no cavity, hard-to-treat or already-insulated cavities), they tend to be the technically strongest fit. For homes where cavity wall is the right answer, a multi-measure contractor will often quote keener.
EnergyEfficiency.ie — what they do
National operation with Cork delivery. Cavity wall insulation is their volume product. They handle the SEAI paperwork, which some homeowners find genuinely useful — others find unnecessary middleman cost. Quote from them and from a local Cork specialist to compare.
What to ask any Cork insulation contractor
- SEAI registration number? Verify on the SEAI website. Without registration, no grant.
- Will you fill out the SEAI application for me, or do I do it? Both are valid; clarity matters.
- What product / system are you using? For EWI: which system (Wetherby, Marmorit, Baumit, etc.) — the system warranty is a real thing. For cavity: bonded bead, mineral wool, or platinum bead — and why.
- Warranty length and terms? Industry standard is 25-year insurance-backed for EWI, 10–25 years for cavity. Read it.
- Is the post-works BER included or do I arrange separately? SEAI subsidises this at €50 if you arrange yourself; some contractors bundle it.
- References — recent jobs in similar properties? A photo gallery of "houses we've done" is much more useful than testimonials.
The single biggest filter on a Cork quote
Whether the contractor recommends the right measure for your specific house, or pushes the measure they make most on. A house with a fully-insulated cavity (often 1970s+ builds with foam already in) cannot benefit from cavity insulation; the right answer is internal wall or external wall. A contractor who quotes you cavity work on that house is wrong for one of two reasons — they didn't survey properly or they're up-selling. Either way, walk.
Want help comparing quotes on a specific job? Send us the quotes — we'll read them.