Ranked by customer reviews on LocallyIrish.ie — updated 15 November 2026
As of 15 November 2026, LocallyIrish.ie ranks 1 attic & cavity insulation in Co. Cork by customer rating. The top-rated is C&S Construction Services - Boiler Services & Repairs & Installs & Wall & Attic Insulation Upgrades in Cork, with 5.0 stars from 1 review on LocallyIrish.ie.
Each business is scored on its average rating weighted by how many ratings it has, so a handful of perfect scores cannot outrank hundreds of near-perfect ones. Reviews left on LocallyIrish.ie and the business's Google rating are counted together; the rating shown on each entry is labelled with its source. A Google rating needs at least 5 ratings to count. Businesses without enough ratings are listed separately, unranked. Paid listings cannot buy a higher position. The list refreshes hourly.
Connolly Insulation
Grenagh

C&W Insulations
Midleton

Industrial Insulation Specialists Ltd
Cork

OS Insulate
Skibbereen

Solastech Insulation & Ventilation Ltd
Fermoy

Envirobead
Mallow

Irish Insulation Direct
Fermoy
Mitchelstown Insulations
Mitchelstown

Envirobead LTD
Cork

Ecocel
Cork

Wall 2 Wall
Cork
External Insulation
Ballinhassig

CEL Energy Ltd
Kinsale

All Time Cosy Homes
Millstreet

TIS Ltd
Cork
Thermal Insulation Distributors Ltd (TIDL)
Cork

Passive House Systems
Ballincollig
R.E.D Group
Cork
Alu Fit
Kanturk
Scotties insulation
Owen Mullen Insulation Fabrication
Fermoy
Insulex Limited
Ballinadee
Kelly Carpentry & Building
Mitchelstown
C&S Construction Services - Boiler Services & Repairs & Installs & Wall & Attic Insulation Upgrades in Cork is currently the top-rated attic & cavity insulation in Co. Cork, with 5.0 stars from 1 review on LocallyIrish.ie. See the full ranked list above.
Each business is scored on its average rating weighted by how many ratings it has, so a handful of perfect scores cannot outrank hundreds of near-perfect ones. Reviews left on LocallyIrish.ie and the business's Google rating are counted together; the rating shown on each entry is labelled with its source. A Google rating needs at least 5 ratings to count. Businesses without enough ratings are listed separately, unranked. Paid listings cannot buy a higher position. The list refreshes hourly.
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