Community Ranked

Best Attic & Cavity Insulation in Co. Antrim

Ranked by Google ratings — updated 2026

Clever Insulation Belfast - Loft Insulation Northern Ireland - Affordable Warmth Scheme Approved

5.0(84 Google ratings)

Belfast Listed Website

One Step Insulation Ltd

5.0(63 Google ratings)

Ballyclare Listed Website

Certainfil Cavity Insulation

4.6(62 Google ratings)

Belfast Listed Website

Northern Loft Insulation Ltd

3.9(11 Google ratings)

Carrickfergus Listed Website

Energystore Ltd

3.7(22 Google ratings)

Lisburn Listed Website

Also in Co. Antrim — not enough ratings to rank yet

One Step Insulation Ltd

Ballyclare

Mic contracts

Antrim

Protherm Insulation Services Ltd

Belfast

D Engineering Ltd

Newtownabbey

Peter Cox | Belfast

Belfast

Warm Fill

Larne

Energy Insulation Ltd

Belfast

S E Insulation Ltd

Belfast

Property Furb

Ballymena

Clarke Eco Wall

Ballymena

Best attic & cavity insulation by town

Antrim Ballyclare Ballymena Belfast Carrickfergus Larne Lisburn Newtownabbey

Best attic & cavity insulation in Antrim — FAQs

What is the best attic & cavity insulation in Antrim?

Clever Insulation Belfast - Loft Insulation Northern Ireland - Affordable Warmth Scheme Approved is currently the top-rated attic & cavity insulation in Co. Antrim, with 5.0 stars from 84 Google ratings. See the full ranked list above.

How are the best attic & cavity insulation in Antrim ranked?

Businesses are ranked by average customer rating, then by how many ratings they have. We use reviews left on LocallyIrish.ie where a business has them, and otherwise its Google rating, which is shown and labelled on each entry.

How can my attic & cavity insulation business rank higher in Antrim?

Encourage happy customers to leave a review on your LocallyIrish.ie listing. More high-star reviews move you up the "Best of" ranking for Co. Antrim.

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