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Gallen Insulation Ltd.

158 Donegal Road
Co. Donegal

Telephone: 074 917 5946
Mobile: 087 648 6675




Gallen Insulation Ltd. are the North West's leading insulation specialists. Gallen Insulation recently opened an office in Castlederg, Co. Tyrone, Northern Ireland. Gallen Insulation offers impartial advice on the best solutions to improving the energy efficiency of your home. Gallen Insulation serves both the new build and retrofit markets in domestic and commercial buildings.

Areas Serviced

Gallen Insulation Ltd is headquartered in Co. Donegal with an additional office in Co. Tyrone to service Northern Ireland customers. Gallen Insulation serves Donegal, Sligo, Leitrim, Fermanagh, Tyrone and Derry. For a full listing of areas serviced please contact Gallen Insulation directly.

Services Provided

  • Cavity Wall Insulation (including KORE Fill Bonded Bead)
  • Dry Lining Insulation
  • Roof Insulation
  • Floor Insulation
  • Attic Insulation
  • Sloping Roof Insulation
  • Acoustic Insulation
  • Airtightness
  • Building Energy Ratings (BER)

Current Offers and Incentives

Gallen Insulation currently participates in the following schemes which may offer cash grants, electricity or gas bill discounts to those who qualify. You can learn more about the current promotions below:




Agrément Cert No. 07/0293


NSAI Agrément Cert No.