Attic Insulation in Dublin
Bringing the attic up to current depth with the details that keep it working: ventilation, hatch and services.
Heat rises, and in a typical Irish semi a poorly insulated attic is one of the biggest single sources of heat loss. Many attics still have the 50mm to 100mm of glass wool laid when the house was built, compressed by storage boxes and disturbed by electricians. Current practice is around 300mm of mineral wool laid in two cross layers, or an equivalent depth of other materials.
The details matter as much as the depth. We keep a ventilation gap at the eaves so the roof timbers stay dry, insulate and draught-seal the attic hatch, lag water tanks and pipes so they do not freeze in the newly cold attic, and raise walkways and storage on stilts so the insulation is not crushed. Where rooms are in the roof or the attic is used, rafter-level insulation may be the right approach instead.
It is the cheapest major upgrade most homes can make and is grant-aided by SEAI for qualifying homes.
Planning a bigger project, such as an extension or a whole-house retrofit? Our parent company MZCC.ie carries out building, carpentry and retrofit works.
Attic Insulation by area
How attic insulation applies to the homes in each area we cover, from period red-bricks to modern estates.
Co. Dublin
- Attic Insulation in Sandyford
- Attic Insulation in Dundrum
- Attic Insulation in Clontarf
- Attic Insulation in Lucan
- Attic Insulation in Dún Laoghaire
- Attic Insulation in Malahide
- Attic Insulation in Ranelagh
- Attic Insulation in Rathfarnham
- Attic Insulation in Stillorgan
- Attic Insulation in Blackrock
- Attic Insulation in Foxrock
- Attic Insulation in Mount Merrion
- Attic Insulation in Goatstown
- Attic Insulation in Dublin 4
- Attic Insulation in Dublin 6
- Attic Insulation in Castleknock
Co. Kildare
Attic Insulation: common questions
How deep should attic insulation be?
Around 300mm of mineral wool, laid in two cross layers, meets current practice for most attics. Many older Dublin homes have 100mm or less, often compressed.
Can I still use my attic for storage?
Yes. We install raised platforms so stored items sit above the insulation rather than crushing it, which keeps the insulation working.
Will insulating the attic cause condensation in the roof?
Not if the eaves ventilation is kept clear and the hatch is sealed, which is part of every installation. Blocking eaves ventilation is the common mistake that causes condensation, and we avoid it.
Related services
Airtightness Testing
Blower-door testing that measures how much heat your home leaks through gaps, and shows exactly where.
Cavity Wall Insulation
Bonded bead or mineral fibre injected into empty cavities, usually done in a day with no mess inside.
Home Energy Advice
Independent advice on your BER, which upgrades to do first, and which SEAI grants your home can use.
Book a free survey for attic insulation.
Tell us about your home and we will arrange a visit, usually within a week. No obligation.