What builders do
General builders manage and carry out larger construction projects — extensions, full renovations, attic and garage conversions, and structural alterations. A good main contractor coordinates all the other trades (groundwork, blockwork, roofing, electrics, plumbing, plastering) and keeps the job on programme and on budget. For anything structural, you'll also need engineer and, often, planning input.
Hire attic insulations without the cowboys
Fast payback
Attic insulation is one of the cheapest energy upgrades, often paying for itself in a couple of years.
Grant support
Installers can advise on SEAI Better Energy grants and supply the paperwork you need.
Done properly
Correct depth, ventilation and walkboards — insulation that performs without trapping damp.
How the job gets done
Assessment
Your installer checks current insulation, ventilation and any damp or wiring issues.
Installation
Insulation is topped up to recommended depth, with the hatch and pipes lagged and vents kept clear.
Sign-off
You get documentation for grant claims and a tidy, walk-boarded attic where needed.
Credentials & what to check
Qualifications to look for
- CIRI (Construction Industry Register Ireland)The statutory register of competent builders — a strong signal of a professional contractor.
- Safe Pass & site managementStandard Irish site-safety and management training.
- Public liability insuranceLarger projects carry more risk — every Hero Verified builder holds min. €2.6m cover.
Before you hire
- ✓Use a written contract with a staged payment schedule tied to milestones — never pay large sums upfront.
- ✓Check CIRI registration and ask for references and addresses of recent jobs you can see.
- ✓For extensions, confirm who's handling planning, engineer's certs and building regs compliance.
What does it cost?
Indicative prices before any SEAI grant. Cost depends on attic size, access and insulation type.
Vetted trades ready to quote
Dortlands Construction Limited
Meath
The Maintenance Man
Dublin
Kitchen Splashbacks
Dublin
William Wright
Tipperary
Lennon carpentry and construction
Mayo
Lazarehome
Dublin