External wall insulation in Raheny — 100mm house wraps, installed by us
Looking to insulate your home in Raheny or Dublin 5? We are Isotherm — direct SEAI-registered external wall insulation contractors. Check out our recently completed 100mm insulation projects in Dublin 5, engineered with NSAI-certified Baumit graphite EPS, coastal-resistant self-cleaning silicone render, and custom aluminium window sills from our Inchicore workshop.
Recently completed 100mm insulation project in Dublin 5
Real photos of a solid concrete block house completed with 100mm external wall insulation, self-cleaning Baumit SilikonTop silicone render, and bespoke aluminium sills by Cills.ie.
Completed 100mm House Wrap — Raheny, Dublin 5
Solid Block Semi-Detached House
System: Baumit ProSystem 100mm Graphite EPS (λ 0.031)
Finish: Baumit SilikonTop 1.5mm Silicone Render (Chalk White 0019)
Sills: Bespoke Aluminium Sills with Welded End Caps by Cills.ie
BER Upgrade: E2 (345 kWh/m²/yr) → B1 (84 kWh/m²/yr)
Recently completed 100mm external wall insulation wrap on solid block home in Dublin 5. Thermal bridging eliminated, coastal weather protection with Baumit SilikonTop, and custom aluminium window sills fabricated by Cills.ie.
100mm Thermal Envelope & Gable Elevation — Dublin 5
Solid Block Semi-Detached House
System: Baumit ProSystem 100mm Graphite EPS
Finish: Baumit SilikonTop Breathable Silicone Topcoat
Sills: Custom Powder-Coated Aluminium Over-Sills
BER Upgrade: E1 (330 kWh/m²/yr) → B1 (82 kWh/m²/yr)
Unbroken exterior thermal blanket covering exposed gable and rear walls. Downpipes, roofline junctions, and plinths sealed to eliminate draughts and heat escape.
Window Reveal & Cill Detailing — Dublin 5 / Raheny
Window & Junction Workmanship
System: 100mm Baumit EPS + Basecoat Mesh Reinforcement
Finish: Self-Cleaning SilikonTop Silicone Render
Sills: Bespoke Cills.ie Sills with Welded Watertight Upstands
BER Upgrade: D2 (290 kWh/m²/yr) → A3 (68 kWh/m²/yr with Solar PV)
Precision window reveal wrapping with expanded mesh corner beads and custom aluminium over-sills from our Inchicore fabrication shop, ensuring 100% watertight drainage.
Mid-century solid blockwork & Dublin Bay coastal exposure
Raheny is characterized by mature 1950s to 1970s suburban housing estates (such as Maywood, St. Anne’s, Belmont, Grange Abbey, Foxfield, and Avondale). The majority of these houses were built with 9-inch hollow concrete block or solid masonry walls without thermal cavities.
Because 9-inch hollow blocks have no cavity, cavity bead pumping is impossible. Internal drylining reduces precious living room dimensions and causes cold bridging at floor joints. Wrapping with 100mm Baumit EPS insulates the masonry from the exterior, raising wall temperatures and stopping heat loss by up to 45%.
Raheny’s proximity to Bull Island and Dublin Bay exposes houses to driving sea spray and persistent dampness. We specify Baumit SilikonTop silicone render, which is hydrophobic, breathable, and highly resistant to coastal green algae and dirt build-up.
Grant values deducted straight from your Raheny invoice
Isotherm is an SEAI Registered Contractor (#10423). We handle all technical pre-approval and post-works paperwork, deducting the grant upfront.
External wall insulation questions in Raheny
How much does 100mm external wall insulation cost in Raheny, Dublin 5?+
A standard 3-bedroom semi-detached house in Raheny typically costs between €13,000 and €19,000 gross for a full 100mm Baumit EPS house wrap. With our direct SEAI grant deduction of €6,000, your net out-of-pocket investment is typically between €7,000 and €13,000. Detached homes in Raheny receive an €8,000 grant, while mid-terrace houses receive €3,500. We deduct the grant directly from your invoice at source.
Can mid-century solid block or hollow block homes in Raheny be externally insulated?+
Yes, absolutely. Most mature homes in Raheny and Dublin 5 (such as in St. Anne's, Maywood, Belmont, Foxfield, and Grange) feature solid concrete block or 9-inch hollow-core block walls. These walls have no cavity to pump with bead insulation. External wall insulation (EWI) is the single most effective way to eliminate thermal bridges, eradicate condensation and black mould, and keep your home warm and dry.
Why is Baumit SilikonTop silicone render recommended for Raheny homes?+
Raheny is located along Dublin Bay, exposing facades to damp coastal air, high salt content, and driving easterly rain. Standard acrylic renders can suffer from algae staining and moisture trapping. We apply NSAI-certified Baumit SilikonTop and NanoporTop silicone topcoats, which are vapour-permeable, highly water-repellent, and self-cleaning during rainfall.
Do I need planning permission for external wall insulation in Raheny?+
For standard suburban residential properties across Raheny and Dublin 5, 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 from Dublin City Council as long as the exterior finish is consistent with the surrounding streetscape.
How do you handle window sills and services on Raheny house wraps?+
When adding 100mm of external insulation, existing concrete sills lose their overhang. Our sister workshop Cills.ie fabricates bespoke powder-coated aluminium window sills with welded watertight end caps that drain water safely past the new insulation. Our crews also unclip ESB meter boxes and gas pipes, remounting them on certified standoff extension brackets.
How long does a 100mm house wrap take to install in Raheny?+
A standard Raheny semi-detached house wrap takes approximately 2 to 3 weeks on site from scaffolding erection to final silicone render topcoat. All work is conducted on the exterior with zero dust or interior room disruption.
Book your 100mm wall insulation survey in Raheny
Direct installation crews. Fixed-price quote with up to €8,000 SEAI grant deducted straight from your bill.
