External Wall Insulation in Blanchardstown
Transform your Blanchardstown home into an energy-efficient, draught-free sanctuary. Our skilled full-time crews install high-performance Baumit external wall insulation and custom aluminium window sills by Cills.ie, keeping heat in and cutting heating bills — with up to €8,000 in SEAI grants deducted directly from your invoice.
Blanchardstown 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 Blanchardstown estates
Every home is surveyed, scaffolded, wrapped with certified Baumit graphite EPS, and completed with custom aluminium window sills by our own direct crews.
Delwood & Roselawn Estates, Blanchardstown, Dublin 15
1970s 4-Bed Semi-Detached House
System: Baumit ProSystem 120mm Graphite EPS
Finish: Baumit SilikonTop 1.5mm Silicone Render (Chalk White 0019)
Sill Detail: Bespoke powder-coated aluminium sills by Cills.ie in RAL 7016 Anthracite Grey
BER Upgrade: E1 (330 kWh/m²/yr) → B1 (86 kWh/m²/yr)
Solid concrete block gable and uninsulated front elevation wrapped. Cold drafts in upstairs bedrooms completely eliminated; heating bills reduced by 46%.
Corduff & Whitestown Estates, Blanchardstown, Dublin 15
1980s 3-Bed End-of-Terrace House
System: Baumit ProSystem 100mm Graphite EPS (λ 0.031)
Finish: Baumit NanoporTop Self-Cleaning Silicone Render (Pebble Grey 0876)
Sill Detail: Aluminium 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.
Clonsilla & Mount Symon Estates, Blanchardstown / D15
1990s 4-Bed Detached House
System: Baumit OpenSystem Breathable Composite Wrap
Finish: Baumit SilikonTop 1.5mm Texture (Oatmeal Cream 0244)
Sill Detail: Heavy-duty aluminium sills by Cills.ie in RAL 9016 Traffic White
BER Upgrade: D1 (250 kWh/m²/yr) → B1 (82 kWh/m²/yr)
Severe thermal bridging around bay windows and front facade eliminated. Modern silicone render finish transformed the property aesthetic completely.
External wall insulation questions in Blanchardstown
How much does external wall insulation cost in Blanchardstown 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 for external wall insulation in Blanchardstown?+
For standard residential housing estates in Blanchardstown (including Huntstown, Hartstown, Mountview, Whitestown, Coolmine, and Delwood), external wall insulation is classified as Exempted Development under Section 4(1)(h) of the Planning and Development Act 2000. It does not require planning permission as long as the external finish is in keeping with surrounding homes. We confirm all boundary clearances and details during your physical survey.
Why is external wall insulation ideal for 1980s hollow block walls in Blanchardstown?+
Many Blanchardstown estates built in the 1970s and 1980s feature 9-inch hollow concrete block walls. Hollow block walls cannot be cavity-pumped because there is no continuous cavity. External wall insulation wraps the structural concrete from the outside, keeping internal masonry warm, eliminating cold bridging around window frames and floor junctions, and eradicating black mould permanently.
How fast can Isotherm crews reach Blanchardstown from your Inchicore depot?+
Our operations depot and fabrication workshop are located at Unit 20, Westlink Industrial Estate, Kylemore Road, Inchicore, Dublin 10, D10 TD35. Traveling via the M50 Northbound or the N3 Navan Road corridor, our installation crews and supervisors reach Blanchardstown in just 15 to 20 minutes, enabling daily site management and rapid response.
How do you handle window sills on Blanchardstown house wraps?+
When adding 100mm to 120mm of Baumit external insulation, existing window sills become too shallow. We install custom powder-coated aluminium window sills fabricated by our sister workshop Cills.ie in our Inchicore facility, featuring welded watertight end caps and thermal barrier pads to eliminate thermal bridging.
Does my Blanchardstown home qualify for the 2026 SEAI grant?+
Yes, if your home was built and occupied on or before 31 December 2010. Furthermore, under SEAI's second wall measure rules, homes that previously had cavity bead insulation pumped into their walls can now also claim the full €6,000 to €8,000 external wall insulation grant to reach an A-rated building envelope.
Book your Blanchardstown Baumit house wrap survey
Our own direct installation crews survey, wrap, and render homes across Blanchardstown. Guaranteed fixed-price quotes with SEAI grants up to €8,000 deducted directly from your invoice.
