How much is the SEAI grant for external insulation in Castlebar?

Homeowners in Castlebar can claim SEAI insulation 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. Isotherm deducts this directly from your invoice.

External wall insulation in Castlebar

Q: Do I need planning permission for EWI in Castlebar?

For most standard homes in Castlebar, external wall insulation falls under exempted development. However, if your property is a Protected Structure or is located in an Architectural Conservation Area (ACA) within Mayo, you should check with Mayo County Council before starting.

Direct external wall insulation contractor serving Castlebar, Co. Mayo. Certified Baumit systems with direct SEAI grant deduction.

We survey and wrap houses in Castlebar, Co. Mayo with NSAI-certified Baumit external insulation systems. Direct contractor crews, SEAI grant deducted from invoice, and custom aluminium window sills fabricated by our sister workshop, Cills.ie.

Local Housing Stock

Castlebar property profiles

Mayo 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 Mayo 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.

Why Wrap in Castlebar

Thermal & facade performance

Wrapping your Castlebar home with Baumit graphite EPS external insulation stops heat escaping through masonry, eliminates condensation, and permanently upgrades your comfort and BER rating.

Planning Regulations in Castlebar

Planning Authority: Mayo County Council

In County Mayo, 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 Mayo County Council before beginning installation.

2026 SEAI Grants in Castlebar

We process your SEAI grant paperwork directly and deduct the grant value from your invoice.

Detached

€8,000

Semi-D / End

€6,000

Mid-Terrace

€3,500

Apartment

€3,000

Eligibility: Properties in Castlebar built and occupied on or before 31 December 2010 qualify for SEAI grant support. Homes with previous cavity bead insulation now qualify for the full EWI grant under the 2026 second wall measure.

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

NSAI-Certified Baumit Systems Installed in Castlebar

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

Baumit external wall insulation system with custom Cills.ie aluminium sills on a completed house wrap in Castlebar

Baumit EPS System · Castlebar

NSAI-certified graphite EPS boards mechanically anchored and bonded, finished with weather-resistant SilikonTop silicone render and custom Cills.ie aluminium sills.

Baumit openSystem breathable external wall insulation on an external wall insulation project in Castlebar

Baumit openSystem & Sto (on request)

Vapour-permeable breathable systems for solid masonry walls, with unclipped gas meter box brackets and sleeved wall ventilation. Sto systems also installed on request.

Frequently Asked Questions (Castlebar)

Do I need planning permission for EWI in Castlebar?+

For most standard homes in Castlebar, EWI falls under exempted development. However, if your house is a protected structure or in an Architectural Conservation Area (ACA) within Mayo, changing the facade requires planning permission from Mayo County Council.

How much can I save on heating in a typical Castlebar home?+

A typical solid-walled semi-detached house in Castlebar can save between €600 and €1,000 per year on heating bills after completing a full external insulation upgrade, while significantly improving indoor comfort and draft elimination.

How long does the installation process take in Castlebar?+

A standard semi-detached or detached home in Castlebar takes approximately 2 to 3 weeks to insulate externally, depending on weather conditions. This includes scaffolding set-up, board application, mesh basecoat, and the final decorative render.

Book your on-site wall survey in Castlebar

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

Call 01 223 8774 Request Survey Online