External Wall Insulation in Dublin 15
Protect your Dublin 15 home from draughts and rising energy costs with the NSAI-certified Baumit external wall insulation system. Our direct employed crews install high-density graphite EPS thermal wraps and bespoke aluminium window sills by Cills.ie — with up to €8,000 in SEAI grants deducted straight from your invoice.
Explore Dedicated Suburb Guides in Dublin 15 & North Dublin
Dublin 15 External Wall Insulation & SEAI Grants
Projects typically start from €180 to €220. Isotherm deducts the SEAI grant directly from your invoice at source.
For homes subject to heavy exposure, we apply specialized silicone-based acrylic renders (such as Baumit SilikonTop) to provide exceptional rain repellency, algae protection, and vapor breathability.
For window cills where water runoff is high, we fit bespoke aluminium over-sills manufactured with a special protective powder coating from Cills.ie to guarantee 100% watertight drainage and long-term durability.
*Starting figures vary depending on project extras, architectural detailing, finish selection, silicone-based acrylic render requirements, and special powder coating for window cills. Fixed quotation provided after a free on-site survey.
Real project photos across Dublin 15 estates
Every home is surveyed, scaffolded, wrapped with certified Baumit graphite EPS, and completed with custom aluminium window sills by our own direct crews.
Laurel Lodge Estate, Castleknock, Dublin 15
1980s 4-Bed Semi-Detached House
System: Baumit ProSystem 120mm Graphite EPS
Finish: Baumit SilikonTop 1.5mm (Chalk White 0019)
Sill Detail: Bespoke powder-coated aluminium sills by Cills.ie in RAL 7016 Anthracite Grey
BER Upgrade: E1 (324 kWh/m²/yr) → B1 (88 kWh/m²/yr)
Solid concrete block gable and front facade wrapped. Cold draughts and bedroom condensation eliminated; annual gas heating demand reduced by 44%.
Hartstown & Huntstown Estates, Blanchardstown, Dublin 15
1980s 3-Bed End-of-Terrace Home
System: Baumit ProSystem 100mm Graphite EPS (λ 0.031)
Finish: Baumit NanoporTop Self-Cleaning Silicone Render (Pebble Grey 0876)
Sill Detail: Custom aluminium window over-sills with welded end caps by Cills.ie
BER Upgrade: D2 (290 kWh/m²/yr) → A3 (68 kWh/m²/yr with Attic Upgrade)
Extensive cold bridging along exposed gable wall cured. External ESB meter box and gas service pipe extended with certified standoff brackets.
Manorfields Estate, Clonee / Ongar Edge, Dublin 15
1990s 4-Bed Detached Dormer Home
System: Baumit OpenSystem Breathable Mineral Composite Wrap
Finish: Baumit SilikonTop 1.5mm Texture (Oatmeal Cream 0244)
Sill Detail: Aluminium sills fabricated by Cills.ie in RAL 9005 Jet Black
BER Upgrade: D1 (245 kWh/m²/yr) → B1 (79 kWh/m²/yr)
Large exterior surface area fully insulated. 4 exposed elevations wrapped with high-impact mesh basecoat, providing robust thermal protection.
External wall insulation questions in Dublin 15
How much does external wall insulation cost in Dublin 15 in 2026?+
A job typically starts from €180 to €220. Final figures depend on extras, architectural details, and chosen finishes — such as whether silicone-based acrylic render is required for enhanced weather resistance, and whether window cills subject to high water runoff require special powder coating. As an SEAI Registered Contractor (#10423), Isotherm deducts your SEAI grant (up to €8,000 for detached, €6,000 for semi-detached/end-terrace, €3,500 for mid-terrace, and €3,000 for apartments) directly from your invoice at source.
Do I need planning permission to wrap my house in Dublin 15?+
For the vast majority of suburban houses across Dublin 15 (including Blanchardstown, Clonsilla, Ongar, Huntstown, Hartstown, and Tyrrelstown), external wall insulation is classified as Exempted Development under Section 4(1)(h) of the Planning and Development Act 2000, provided the external finish matches the character of the neighbourhood. If your property is a Protected Structure or in an Architectural Conservation Area (such as historic Castleknock Village), consultation with Fingal County Council is required. We evaluate planning and boundary clearances during your survey.
How fast can Isotherm crews reach Dublin 15 from your Inchicore depot?+
Our central depot and workshop are located at Unit 20, Westlink Industrial Estate, Kylemore Road, Inchicore, Dublin 10, D10 TD35. Via the M50 Northbound or N3 corridor, our direct installation crews and project supervisors reach Dublin 15 (Castleknock, Blanchardstown, Clonsilla, Ongar) in just 15 to 20 minutes, ensuring daily on-site supervision and rapid material replenishment.
Why is the Baumit external wall insulation system specified for Dublin 15 homes?+
We specify NSAI Agrément certified Baumit external wall insulation systems featuring high-density graphite EPS (λ = 0.031 W/mK) and vapour-permeable Baumit SilikonTop silicone render. Dublin 15 homes face open exposure to rain-bearing winds from the Dublin/Meath plains. Baumit silicone render actively repels driving rain while allowing trapped masonry moisture to breathe outward, resisting micro-cracking and algae growth.
How are window sills handled when 100mm–150mm of external insulation is added?+
Adding external insulation extends beyond existing concrete sills. To guarantee permanent weather tightness and eliminate thermal bridging, we fit custom powder-coated aluminium window sills with welded watertight end caps fabricated by our sister workshop Cills.ie in our Inchicore depot.
Does my home qualify for the 2026 SEAI External Wall Insulation Grant?+
To qualify for the SEAI Better Energy Homes grant in Dublin 15, your home must have been built and occupied on or before 31 December 2010 (verified by ESB MPRN meter registration). Under the updated 2026 SEAI rules, homes that previously received a cavity wall bead grant are now fully eligible to claim the full €6,000 to €8,000 external wall insulation grant.
Book your Dublin 15 Baumit house wrap survey
Our own direct installation crews survey, wrap, and render homes across Dublin 15. Guaranteed fixed-price quotes with SEAI grants up to €8,000 deducted directly from your invoice.
