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Internal Wall Insulation Dublin: Is It Right for You?

Best suited to solid-wall period homes, protected structures and terraces where external insulation isn’t possible. Typically €120–€220 per m², with an SEAI grant of up to €4,500.

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Best Insulation for Interior Walls

Improving your home’s energy efficiency doesn’t have to be complicated or invasive.

Internal wall insulation offers a straightforward solution to heat loss, providing homeowners with a warm, comfortable environment while reducing energy bills.

This option is particularly effective for homes with solid walls or for those looking to maintain the exterior appearance of their property.

Man Doing Dry Lining

Internal vs External: Which Applies to You?

Choose internal wall insulation if: your home is a protected structure or in a conservation area where the exterior can’t be altered; you live in a terraced or mid-row property where wrapping just your section isn’t practical; or you want to keep your home’s existing exterior appearance.

Choose external wall insulation instead if: your exterior can be altered, you want the bigger thermal upgrade external insulation typically provides, or you’d like to refresh your home’s appearance at the same time. See our external wall insulation page for cost and detail.

Not sure which applies? A free assessment will confirm what’s actually possible for your property.

Most internal wall insulation in Dublin homes is installed as insulated plasterboard — see our dry lining insulation service for that approach in detail.

Cost of Internal Wall Insulation

Exact cost depends on wall area, insulation thickness and finish — we confirm the figure after a free assessment.

Cost per m²: €120–€220

Typical total (semi-detached): €5,000–€25,000+

SEAI grant: Up to €4,500

Wall Insulation Installer

What Makes Internal Wall Insulation Essential?

Heat loss through walls is one of the primary culprits behind high energy costs and fluctuating indoor temperatures. By adding a layer of insulation to your interior walls, you can significantly improve your home’s thermal performance.

 

Internal wall insulation helps retain warmth during colder months and keeps interiors cooler in summer, ensuring year-round comfort.

 

At OSBER, we deliver tailored internal insulation solutions designed to meet the unique needs of Irish homes. Whether you’re renovating or upgrading your home’s energy efficiency, our services are efficient, reliable, and cost-effective.

Key Advantages of Internal Wall Insulation

Better Energy Efficiency: Minimise heat loss and optimise your home’s thermal performance.

Cost Savings: Reduce energy bills over time with improved insulation.

Consistent Comfort: Maintain steady indoor temperatures regardless of external weather conditions.

Damp Resistance: Protect your home from issues caused by damp and condensation.

Flexibility: Ideal for older homes with solid walls or those without cavity wall insulation options.

Aesthetic Retention: Preserve the original exterior design of your property.

[x] heating upgrade & boilers

Ideal for a Range of Properties

Internal wall insulation is suitable for:

  • Older Homes: Perfect for solid-walled properties without cavity walls.
  • Heritage Buildings: Retain the exterior character while improving energy performance.
  • Modern Homes: Enhance energy efficiency in rooms with insufficient insulation.

Our Step-by-Step Installation Process

  • Comprehensive Evaluation: Our experts assess your property to determine the best insulation strategy tailored to your home.
  • Preparation Work: We carefully prepare the work area by removing wall fixtures and furniture, ensuring a seamless process.
  • Insulation Installation: Premium insulated plasterboards are fitted to the interior walls to create a thermal barrier.
  • Finishing Touches: Walls are skimmed and prepared, ready for painting or other decorative finishes.
  • Post-Installation Inspection: We ensure every detail is perfected and leave your space clean and tidy.
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A Reliable Partner for SEAI Grant Support

  • One of the unique benefits of choosing OSBER is our comprehensive support with SEAI grants. These grants make it more affordable for homeowners to invest in energy-efficient upgrades. Our team assists with the application process, ensuring you can access financial aid with ease.

    With grants of up to €4,500 available for internal wall insulation, this is the perfect time to consider upgrading your home. Let OSBER guide you through the grant process and help you unlock the full potential of your property.

Services

Frequently Asked Questions

Internal wall insulation is usually the right choice if your exterior can’t be altered — protected structures, conservation areas, or terraced homes where you can’t insulate just one section. If your exterior can be changed, external wall insulation typically provides a bigger thermal upgrade and refreshes your home’s appearance at the same time. We’ll advise honestly during a free assessment.
Typically €120–€220 per m², or €5,000–€25,000+ total for an average home depending on size. The SEAI grant covers up to €4,500. We confirm an exact quote after a free assessment.

Internal wall insulation involves adding insulated boards or layers to the interior walls of your home to reduce heat loss. This method is particularly effective for homes with solid walls that lack cavity insulation.

By creating a thermal barrier, internal wall insulation traps heat within your home, reducing the need for constant heating. This results in lower energy consumption and decreased utility bills.

While it works best for older homes with solid walls or heritage buildings where exterior insulation is not feasible, it can also enhance energy efficiency in modern homes with poorly insulated walls.

Internal wall insulation preserves the exterior look of your home. Inside, the walls may lose a small amount of space due to the added insulation boards, but this is minimal.

Yes, it reduces condensation on interior walls, which helps prevent the growth of damp and mould. This contributes to a healthier indoor environment.

The timeline depends on the size of your property and the scope of the project, but most installations are completed within a few days. OSBER ensures minimal disruption during the process.

Yes, homeowners in Ireland may qualify for SEAI grants of up to €4,500 to help cover insulation costs. OSBER can assist you with the application process to maximise your savings.

After installation, walls are skimmed and prepared for painting or other decorative finishes. You’ll need to redecorate, but the final results will be a smooth and ready-to-use surface.

The space loss is minimal, typically a few centimetres per wall. This is a small compromise for the significant energy savings and improved comfort.

Yes, by improving your home’s energy rating and thermal comfort, internal wall insulation can enhance its overall market appeal and value.

OSBER offers expert assessments, high-quality materials, and seamless installations tailored to your home. We focus on customer satisfaction and provide full support, including guidance with SEAI grants.

Contact OSBER today for a consultation or quote. Our team will assess your property and provide a customised plan to improve your home’s energy efficiency.

Ready to Enhance Your Home’s Energy Efficiency?

Unlock incredible savings and step into a sustainable future with Osber.ie. Our convenient contact form is just a click away. Fill in your details, let us know how we can assist you, and our friendly staff will get back to you promptly, to discuss your construction project according to your goals, or inquire about our services.

Get A Free Quote & Site Visit

Preferred Date & Time for Site Visit
How would you like to be contacted?

Get A Free Quote & Site Visit

Preferred Date & Time for Site Visit
How would you like to be contacted?