Gallen insulation are the North Wests leading insulation specialists covering Donegal, Sligo, Leitrim, Fermanagh, Tyrone and Derry.To service our customers in Northern Ireland we have recently opened an office in Castlederg, Co. Tyrone. We offer impartial advice on the best solutions to improving the energy efficency of your home. Our services include supply and installation of Platinum Ecobead cavity wall insulation.

  • Supply and fit of attic insulation.
  • Supply and fit of insulated dry lining boards
  • Supply and fit of external insulation
  • Building energy rating certificates


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We have improved the energy efficency on numerous private homes and also a large number of public building including Churches, Social Centers, Offices, Garda Stations, Schools and Hospitals.

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We are grant approved contractors for the SEAI Better Energy Homes scheme this scheme covers all homes in the republic of ireland built pre 2006 are entitled to grant funding for insulation improvements to their homes grants range from €50.00 upwards. We would be more than happy to guide any homeowner through the grant application

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We are NSAI and BBA approved installers which are national standards requiring our company to maintain the highest standards in workmanship, materials and records.

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Frequently Asked Questions

  • What is a BER certificate?
  • How Can I Improve Your Rating?
  • What is a EcoBead Insulation?
  • How does the Acoustic Insulation work?
  • Can you combine thermal and acoustic insulation?

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