External Wall Insulation in Blanchardstown
Wrap your Blanchardstown home with the NSAI-certified Baumit external wall insulation system. We are Isotherm — direct SEAI-registered insulation contractors operating from Unit 20, Westlink Industrial Estate, Kylemore Road, Inchicore, Dublin 10. Our dedicated crews install high-density graphite EPS wraps, fit bespoke aluminium window sills fabricated by our sister workshop Cills.ie, and deduct up to €8,000 in SEAI grants directly from your invoice.
Explore Dedicated Suburb Guides in Dublin 15 & North Dublin
Insulating 1980s–2000s estates & hollow-block homes in Blanchardstown
Blanchardstown underwent massive residential expansion between 1975 and 2005. Estates such as Huntstown, Hartstown, Corduff, Roselawn, Delwood, Mountview, Whitestown, and Coolmine contain thousands of solid concrete block, hollow block, and narrow-cavity semi-detached and terraced homes. These properties present specific thermal challenges that external wall insulation solves permanently:
Estates like Corduff, Roselawn, and Delwood contain substantial numbers of homes built with 9-inch hollow concrete blocks. Because these blocks have internal void cores rather than an insulated cavity, pumped bead insulation cannot be used. External wall insulation wraps the dense concrete structure from the outside, turning cold outer walls into heat-storing thermal batteries.
In estates such as Huntstown, Hartstown, and Mountview, houses were built with 50mm cavities that suffer severe cold bridging along concrete floor edges, window lintels, and gable walls. Applying a 100mm–120mm Baumit EPS external wrap provides continuous unbroken insulation, stopping condensation and black mould on interior walls.
Positioned on Dublin's northwest fringe bordering Clonee and Meath, Blanchardstown homes face direct driving rain and open wind exposure. Older dashed surfaces absorb water, causing cold damp walls. Baumit SilikonTop silicone render forms an impenetrable hydrophobic barrier that sheds water instantly while remaining fully vapour-permeable.
Internal drylining shrinks bedroom and living room dimensions, requires rewiring sockets, and creates severe internal disruption. External wall insulation is carried out 100% on the outside of your Blanchardstown property, modernizing your home's curb appeal and lowering winter heating bills by up to 45%.
Why Blanchardstown homeowners choose Isotherm over lead brokers
Unlike online broker portals that sell your project to unknown third-party contractors, Isotherm delivers direct contractor accountability:
15–20 Mins From Inchicore Depot
Based at Unit 20, Westlink Industrial Estate in Inchicore, our operations depot is located minutes from Blanchardstown via the M50 and N3. Our project managers and installation crews are on site daily.
NSAI-Certified Baumit Systems
We are fully certified Baumit applicators. Every house wrap utilizes matched, European-certified components—high-density graphite EPS, flexible basecoats, reinforcing mesh, and self-cleaning silicone renders.
Custom Cills.ie Metal Sills
We manufacture bespoke powder-coated aluminium window sills in our sister workshop Cills.ie. Featuring welded watertight end caps and thermal break pads, our sills eliminate leak risks for the lifetime of your home.
SEAI wrap grants deducted directly from your Blanchardstown invoice
Isotherm is an SEAI Registered Contractor (#10423). We handle all technical pre-approval paperwork and grant compliance, deducting the grant value directly from your invoice so you only pay the net balance.
Calculate Your Blanchardstown EWI Quote
Model your wall area, insulation thickness, and SEAI grant deduction instantly.
Our 6-step Blanchardstown house wrap installation process
From the initial laser survey to your final post-works BER certificate, our direct crews handle every stage with precision:
Site Survey & Laser Scan
We inspect masonry condition, window reveal depths, plinth clearances, roof overhangs, and external service cables (ESB, gas meter, broadband).
SEAI Grant Approval
We lodge the SEAI Better Energy Homes grant application on your behalf, locking in your €3,000 to €8,000 grant pre-approval before scaffolding arrives.
Baumit EPS Board Fixing
We unclip services onto certified standoff brackets, adhere high-density Baumit graphite EPS with continuous boundary-bead adhesive, and mechanically anchor into masonry.
Cills.ie Sill Installation
Custom powder-coated aluminium window sills fabricated in our Inchicore workshop are installed with thermal insulation pads and welded watertight end caps.
Reinforced Silicone Render
We embed alkali-resistant fibreglass mesh into Baumit ProContact basecoat, apply Baumit UniPrimer, and hand-trowel self-cleaning Baumit SilikonTop silicone render.
Post-BER & Net Invoice
An independent BER assessor conducts the final audit, your new B or A BER rating is published, and we deduct the full SEAI grant directly from your invoice.
Recent external insulation projects in Blanchardstown
Explore recent residential house wrap retrofits completed by our direct installation crews in Blanchardstown:
Roselawn / Delwood, Blanchardstown, Dublin 15
1970s 4-Bed Semi-Detached House
“Solid concrete block gable and uninsulated front elevation wrapped. Cold drafts in upstairs bedrooms completely eliminated; heating bills reduced by 46%.”
Hartstown / Huntstown, Blanchardstown, Dublin 15
1980s 3-Bed End-of-Terrace House
“Extensive cold bridging along exposed gable wall cured. External ESB meter box and gas service pipe extended with certified standoff brackets.”
Coolmine / Clonsilla Border, Blanchardstown, Dublin 15
1980s 3-Bed Semi-Detached House
“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 standard 3-bedroom semi-detached or end-of-terrace house in Blanchardstown (such as in Huntstown, Hartstown, Corduff, or Roselawn) typically costs between €13,000 and €19,000 gross. As an SEAI Registered Contractor (#10423), Isotherm deducts the €6,000 SEAI grant directly from your invoice, meaning your net out-of-pocket payment is €7,000 to €13,000. Mid-terrace homes range from €10,500 to €14,000 gross (net €7,000 to €10,500 after the €3,500 grant), while detached properties receive an €8,000 grant and apartments receive €3,000.
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, pathway alignments, and estate details during your physical survey.
Why is external wall insulation ideal for 1980s hollow block & uninsulated cavity walls in Blanchardstown?+
Many Blanchardstown estates built in the 1970s and 1980s feature 9-inch hollow concrete block walls or poorly insulated 50mm cavities. 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. Traveling via the M50 Northbound or the N3 Navan Road corridor, our installation crews and supervisors reach Blanchardstown in just 15 to 20 minutes. This enables daily site management, quick delivery of custom Cills.ie window sills, and seamless client communication.
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. Rather than using low-grade plastic clip-on extenders, our sister workshop Cills.ie custom fabricates heavy-duty, powder-coated aluminium window sills in our Inchicore facility. Each sill features welded watertight end caps, thermal barrier pads, and is powder-coated to match your window frames in RAL 7016 Anthracite Grey, RAL 9016 White, or any custom RAL colour.
How long does the installation take in Blanchardstown?+
A standard 3-bed semi-detached house wrap in Blanchardstown takes approximately 2 to 3 weeks on site from scaffolding setup to final silicone render application, weather permitting. All work is conducted externally with zero disruption inside your home.
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 introduced in March 2026, 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.
Related External Insulation Resources & Guides
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.