Gavin McGonagle Windows, Replacement Windows and Doors in Donegal

Gavin McGonagle Windows is listed on the SEAI register for external windows and external doors, as of the register download on 7 August 2026. Also listed on the SEAI register for dry-lining insulation. The register changes, so check the current entry with SEAI directly.

Gavin McGonagle Windows is based in Donegal and works across Letterkenny, Buncrana, Ballybofey, Donegal town and Dungloe. The SEAI register also lists 2 other counties in their service area, so it is worth asking how far they travel for a job your size.

Most of the housing here is dashed render bungalows and farmhouses built to take weather, plus coastal properties on fully exposed sites. The local condition that shapes the job is the most severe in the country: Atlantic storms, horizontal rain and sustained wind loading, which is why wind loading here is a structural question, not a comfort one, and frames need fixing specifications to match.

Use the enquiry form on this page and it goes straight to them, or ring them on 086 377 2980. Ask for a measured survey before any price, get the quote in writing, and confirm who makes good the plaster inside and the render outside once the old frames come out.

Ask for a measured survey before any price, and get the quote in writing afterwards. Confirm three things in particular: whether removing and disposing of the old frames is included, who makes good the plaster inside and the render outside, and what the lead time is. Made to measure frames run six to twelve weeks, so the survey date is not the start date.

Letterkenny is in Donegal, where Gavin McGonagle Windows is registered, so yes. They work across Letterkenny, Buncrana, Ballybofey and out to Dungloe. Whether they will travel to a specific townland is worth asking directly, particularly for a smaller job.

No Google rating is showing for Gavin McGonagle Windows at the moment. That can mean nobody has left one, or that fewer than three people have, because we hold a rating back below that rather than presenting one review as a score. It says nothing about the quality of their work. Ask them for two addresses locally where they have done the same job, and go and look at them.