At RH Insulation, we know how important it is to keep your home warm and your energy bills low, especially here in Dublin, where the weather can change in a flash!

One of the best ways to make your house cosier and more efficient is by upgrading your attic insulation. Here, we answer the most common questions we get from our customers about attic insulation.

1. What is Attic Insulation and Why Do I Need It?

Attic insulation is a layer of special material placed in your attic to stop heat from escaping through your roof.

In Dublin’s chilly winters and mild summers, good attic insulation keeps the warmth in when you need it and helps your home stay cool when the sun comes out.

A well-insulated attic means you use less energy to heat your home, so you save money and help the environment too.

2. How Much Can I Save with Attic Insulation?

You can save a lot! If your attic is poorly insulated or the insulation is old, adding a new layer can cut your heating bills by over 35%.

Even topping up older insulation can save 10% to 30% on your bills. With energy prices rising, these savings add up fast, especially over a cold Dublin winter.

3. What Types of Insulation Are Best for Attics in Dublin?

There are a few types of attic insulation, but the most popular in Dublin are:

• Blanket (Roll) Insulation: Made from fibreglass or mineral wool, comes in rolls and is cost-effective.
• Loose-fill Insulation: Blown into place, good for hard-to-reach spaces.
• Spray Foam: Expands to fill gaps but is more expensive.

Most Dublin homes use blanket insulation because it’s affordable, easy to install, and works well in our damp climate.

4. How Much Insulation Do I Need?

For best results, we recommend 300mm (about 12 inches) of insulation in your attic.

This meets Irish building regulations and gives you the best protection against heat loss. If you already have some insulation, it can often be topped up to reach this level.

5. How Do I Know If My Attic Needs More Insulation?

Here are some signs your attic might need more insulation:

• Your home feels cold even with the heating on.
• Your energy bills are higher than expected.
• You can see the joists (wooden beams) in your attic above the insulation.
• The insulation looks thin, patchy, or is less than 300mm deep.
• There’s dampness or mould in your attic.

If you’re unsure, RH Insulation offers free surveys for homes in Dublin—just give us a call!

6. How Is Attic Insulation Installed?

Our team at RH Insulation makes the process simple:

1. We lay down new rolls of high-quality insulation or top up what’s already there.
2. We make sure not to block any vents, so your attic stays dry.
3. We can also insulate your water tank and pipes to stop them freezing in winter.

Most jobs are finished in a few hours, and we always tidy up before we leave.

7. How Much Does Attic Insulation Cost in Dublin?

For a typical Dublin home, attic insulation costs between €1,200 and €3,000 (Needs checked), depending on your attic’s size and the type of insulation you choose.

8. Are There Grants for Attic Insulation in Dublin?

Yes! The Sustainable Energy Authority of Ireland (SEAI) offers grants to help with the cost of attic insulation. The grant amount depends on your house type, but it can be up to €1,500 for a detached house.

We can help you with the grant application, so you get the best deal possible.

9. Does Attic Insulation Help with Damp and Mould?

Proper attic insulation helps keep your attic dry by stopping warm, moist air from meeting cold surfaces and causing condensation.

We always make sure your attic is well-ventilated, so you don’t have to worry about damp or mould.

10. How Long Does Attic Insulation Last?

When installed correctly, attic insulation can last for decades. We use only high-quality materials that are made to stand up to the Irish climate.

11. Can I Insulate My Attic Myself?

Some people try DIY, but it’s easy to make mistakes, like blocking vents or leaving gaps, which can cause problems. At RH Insulation, our trained team does the job right, so you get the full benefit and peace of mind.

The grant is only payable to SEAI registered Installers such as RH Insulation Ltd

12. What About Attic Flooring and Storage?

If you use your attic for storage, we can raise the floor to fit enough insulation underneath. This way, you get a warm home and don’t lose your storage space.

Customer Testimonial

“We had RH Insulation insulate our attic in Dublin last winter. The house is so much warmer now, and our heating bills have dropped. The team was friendly, quick, and left everything spotless. I’d recommend them to anyone!”
Patrick Murphy, Dublin 4

Why Choose RH Insulation for Your Dublin Home?

• Over 20 years’ experience in the Dublin area
• Expert advice and free surveys
• SEAI grant help and paperwork
• Fast, tidy, and friendly service
• Only the best materials for your home

Ready to make your Dublin home warmer and save on bills?

Contact RH Insulation today for a free attic insulation survey. Your comfort is our priority!