External Wall Insulation in Donegal

Direct external wall insulation contractor serving Donegal. Certified Sto and Baumit systems with SEAI grant deductions.

We install certified Baumit external wall insulation systems across County Donegal, serving homeowners in Letterkenny and surrounding areas.

Book free on-site survey Call 01 223 8774

Local Housing Stock

Property profiles in Donegal

Donegal has a varied mix of housing types, from older stone cottages and solid block farmhouses to modern housing estates. Many solid-wall properties in County Donegal suffer from high heat loss and dampness because they lack a cavity wall. External wall insulation is the most effective retrofit method for these properties, protecting the structural walls and dramatically boosting the BER rating.

Climate Challenges

Weather exposure in Donegal

County Donegal experiences typical Irish weather, marked by high moisture levels, cold damp periods, and rain. Damp masonry conducts heat away from the home much faster. EWI acts as a waterproof shield, keeping the internal walls warm and dry, which eliminates damp and mould issues while keeping heating bills low.

Planning & Council Regulations in Donegal

Planning Authority: Donegal County Council

In County Donegal, external wall insulation is generally considered exempted development under planning regulations, provided it does not change the essential character of the area. However, if your building is listed as a Protected Structure or lies in a Conservation Area, you should consult with Donegal County Council before beginning installation.

2026 SEAI Grants in Donegal

We process the SEAI grant paperwork on your behalf and deduct the grant amount directly from your invoice.

Detached

€8,000

Semi-D

€6,000

Mid-Terrace

€3,500

Apartment

€3,000

Eligibility: Your home in Donegal must have been built and occupied before 2011. We handle the pre-works SEAI application prior to starting on site.

Areas Covered in Donegal

Our installation crews cover towns and residential estates across Donegal, including:

Letterkenny Donegal Town Buncrana Ballyshannon Killybegs

Progress

Step 1 of 3

1. Property Profile

Select your building details to start your out-of-pocket calculation.

House Type

Existing Wall Type

Approximate Year Built

*Note: Properties must be built and occupied before 2011 to qualify for the SEAI grant.

Contractor Standards

Certified Sto & Baumit Systems Installed in Donegal

Every wrap in Donegal includes bespoke powder-coated aluminium window sills fabricated by our sister workshop, Cills.ie.

Sto render finish with custom Cills.ie aluminium sills on an external wall insulation project in Donegal

StoTherm Classic System · Donegal

High-durability organic basecoat and self-cleaning silicone topcoat with custom aluminium sills preventing cold bridges.

Baumit external insulation system with extended window sills on a completed house wrap in Donegal

Baumit openSystem · Donegal

Vapour-permeable breathable insulation with unclipped gas meter box brackets and sleeved wall ventilation.

Frequently Asked Questions (Donegal)

Do I need planning permission for EWI in Donegal?+

For most standard homes in County Donegal, EWI is exempt from planning. However, for historical structures or properties in conservation areas, you must check with Donegal County Council.

How much is the SEAI grant for external insulation in Donegal?+

SEAI offers grants of up to €8,000 for detached houses, €6,000 for semi-detached/end-terrace houses, €3,500 for mid-terrace houses, and €3,000 for apartments in County Donegal. Isotherm deducts this directly from your invoice.

Book your on-site wall survey in Donegal

We survey your property, specify the certified Sto or Baumit system, calculate your SEAI grant, and carry out the installation with direct crews.

Call 01 223 8774 Request Survey Online