How Long Does Loft Insulation Last?

Tuesday 27th February 2024

Joanna Grimbley-Smith

No comments, yet!

Insulation roll in an attic CONTENTS

 

 

Over time, insulation can settle and lose its thermal resistance, leading to increased heating costs and a less comfortable living environment. Knowing when to have it replaced is crucial to maintaining your home's energy efficiency.

Here at ICE Thermal, our experienced engineers can replace your old loft insulation with our loft insulation installation services. We operate nationwide and are available 365 days a year, including bank holidays. 

Read on to learn more about how long insulation lasts and when you should replace it. 

The importance of loft insulation

Loft insulation is a critical component in maintaining the energy efficiency and comfort of your home. 25% of heat is lost from a property via the roof so properly installed loft insulation can significantly reduce heating and cooling costs, making it an essential investment for homeowners, landlords, and tenants alike.

You can learn more about the benefits of thermal insulation in this blog

How long does loft insulation last?

The lifespan of loft insulation depends on several factors including the type of material used and how well it is installed. Generally speaking, most loft insulation is designed to last for around 40 years. However, this duration can be affected by external conditions such as moisture ingress or pest infestations which could compromise its effectiveness over time.

To maximise the life expectancy and performance of your loft insulation, professional installation is recommended. Attempting DIY installation without proper knowledge or tools can lead to poor placement that diminishes its insulative properties.

Regular checks on your insulation is crucial to make sure it is performing optimally, too. Recognising when your insulation has settled or degraded allows you to take timely action - whether that means adding more layers or replacing old materials entirely.

How long do different insulation materials last?

Fibreglass insulation

Fibreglass is a common choice for loft insulation due to its cost-effectiveness and ease of installation. Although loft insulation rolls can last for 80 to 100 years, fibreglass can compress over time, diminishing its capacity to encase air and stop heat escaping from your home. 

To maintain optimal performance, it is advisable to check fibreglass insulation every few years for signs of compression, damage, and dampness which can affect how well it insulates a property. Replacing or topping up compressed areas helps restore the material's thermal resistance.

Cellulose insulation

Made from recycled paper products, cellulose insulation is an eco-friendly option that boasts superior thermal properties. It typically has a shorter lifespan than fibreglass, and lasts for around 15 to 20 years under ideal conditions. However, like fibreglass, its longevity can be compromised by improper installation or environmental factors, such as dampness.

Regular inspections are crucial for cellulose insulation, too; they let you spot potential issues before they escalate into bigger problems like mould growth or reduced efficiency.

Spray foam insulation

When properly installed by professionals, spray foam can last more than 50 years without significant degradation in performance. This type of insulation adheres well to surfaces, creating a tight seal that significantly improves energy efficiency.

The key with spray foam is ensuring it is professionally applied. Incorrect application may lead not only to reduced lifespan but also potential health risks from off-gassing chemicals during installation.

Rigid foam board insulation

Loft insulation boards offer robust thermal resistance with lifespans extending upwards of 50 years when protected from UV rays and mechanical damage. They are often used in conjunction with other types of loft insulation for enhanced heat retention.

Careful handling during installation ensures these boards remain effective over their lengthy service life. Cracks, for example, can compromise their insulating properties. Regular checks help identify any maintenance that is needed early on.

The signs you need to replace your insulation

Although adding new layers of insulation on top of old ones can restore the energy efficiency of your property, there are times when the existing material needs complete replacement.

Increased energy bills

If you notice a sudden spike in your heating or cooling bills without a significant change in utility rates or usage patterns, it could indicate that your loft insulation is no longer performing effectively. 

Dampness or water damage

Insulation that has been exposed to water from leaks can clump together, losing its effectiveness. This not only reduces the insulative properties but also poses risks for mould growth which can affect air quality and put your health at risk. If patches of dampness or signs of water damage are visible on the ceiling below the loft, it is likely time for an inspection.

Pest infestations

Rodents and insects often find their way into lofts seeking warmth during colder months. Nesting and physical harm by these unwelcome visitors hampers the effectiveness of insulation. Droppings left behind by pests can contaminate the material, too.

Finding evidence such as droppings, gnaw marks, or even visual confirmation of these uninvited guests means urgent action is needed. It is recommended you first contact pest control professionals to eradicate the pest problem, and then look into whether insulation replacement is required. 

The material has aged beyond its life expectancy

Even if your insulation does not get damaged, all materials will degrade to a point where they are no longer able to offer the required levels of protection against heat loss or gain.

If you are unsure about the state of your existing insulation, it is wise to get in touch with thermal insulation installers. They will assess the condition of your insulation and can advise on whether replacement is required. 

How to replace your insulation

It is recommended you always bring in professionals for insulation installation. Firstly, experts possess the necessary knowledge about different types of insulation materials suitable for various homes. They can assess your specific needs based on your house's structure and recommend the best solution accordingly.

Thermal insulation engineers can also ensure that the insulation covers all areas effectively without leaving gaps or spaces which could lead to heat loss. This will prevent common issues such as dampness or mould growth caused by incorrect fitting, too.

Get in touch

To book your loft insulation installation, just contact our team on 020 3376 4802 or send an email to [email protected]. Our friendly team will be happy to schedule your free site survey and provide you with a no-obligation quote. 

 

Comment
Reilly Peters

Reilly Peters

Business Development Manager

Add to contacts

Speak with me today,
I’m here to help

By asking you a few questions either via phone or email I can immediately provide a realistic estimation of the cost.

You’re in good company. We’ve worked with the following commercial clients…

Customer reviews

Our happy customers have rated our service as
4.9 on Google.

View All Reviews

Sue Sullivan

Star Star Star Star Star

7 months ago

Ice did a brilliant job and I would highly recommend them. Reilly in the office booked everything in and was most helpful, and then Harry came and…

Read more

Posted on Google

John Hatswell

Star Star Star Star Star

8 months ago

We had a pressing need to address concerns regarding a clean up of a Trauma site. Ice Services and Zoe were responsive, informative and professional.…

Read more

Posted on Google

Eddie Mack

Star Star Star Star Star

9 months ago

I’ve used ICE Cleaning a few times and the service has been absolutely terrific. Paul Gimenez was incredibly helpful and dealt with everything…

Read more

Posted on Google

Martha Sparkes

Star Star Star Star Star

9 months ago

Power cleaned my external brick walls and look very good. They were punctual, hard working and respectful. I would recommend them with no hesitation.

Read more

Posted on Google

Simon Nicholson

Star Star Star Star Star

9 months ago

Booked ICE Cleaning at short notice to help with the clean-up of our outdoor Event Site in Central London. Whilst they were unable to assist with our…

Read more

Posted on Google

Kim Barnes

Star Star Star Star Star

1 year ago

From start to finish, booking in with Jess in the office to Mark and Lee turning up for app 5-star service from start to finish..Quick turnaround…

Read more

Posted on Google

Mark Treasure

Star Star Star Star Star

1 year ago

We recently used ICE Cleaning to assist with the cleaning of communal areas and flats following a fire in a service riser. I initially spoke with…

Read more

Posted on Google

Martin Haw

Star Star Star Star Star

1 year ago

Very prompt, polite and professional service

Read more

Posted on Google

George C

Star Star Star Star

1 year ago

Very professional and the sales team are very helpful and easy to deal with. The job was carried out quickly and professionally and the site team…

Read more

Posted on Google

Derik Matheus

Star Star Star Star Star

1 year ago

ICE Cleaning is a great company to work with! They have been cleaning our office for two years, and we are thrilled to have them as part of our team.

Read more

Posted on Google

Dannil Sourez

Star Star Star Star Star

1 year ago

ICE Cleaning Solutions is a serious and responsible company that takes pride in their work.

Read more

Posted on Google

Sam Hart

Star Star Star Star Star

1 year ago

Very impressed with ICE cleaning, really efficient and had good service. Dealt with my mould issue in my gym really well and couldn’t be…

Read more

Posted on Google

Luke Stockwell

Star Star Star Star Star

1 year ago

We used ICE Cleaning at BT Sport for a Cage Warriors event in our studios. In previous years this event had caused multiple problems due to the risk…

Read more

Posted on Google

Danielle Baycanli

Star Star Star Star Star

1 year ago

ICE cleaning cleaned the floors and carpets of our school to a very high standard. The team was friendly and efficient and we were very happy with…

Read more

Posted on Google

Emma Bryan

Star Star Star Star Star

1 year ago

ICE cleaning completed a commercial clean for us. They were very professional, prompt, responsive and they event went back the next day to finish…

Read more

Posted on Google

Stuart Goodson

Star Star Star Star Star

1 year ago

Zoe as the first point of contact was extremely helpful and efficient. The decontamination of toxic mercury from my mother’s garage was…

Read more

Posted on Google

Nick Barringer

Star Star Star Star Star

1 year ago

I was dealt with very professionally from first contact through to completion. The people are pleasant and knowledgeable, the work was carried out…

Read more

Posted on Google

Jason Etherington

Star Star Star Star Star

1 year ago

Fantastic service, the technician was very understanding and talked us through the process and was happy to answer any questions. Work was completed…

Read more

Posted on Google

Alison Bailey

Star Star Star Star Star

1 year ago

On calling ICE following a spillage, I first came into contact with Zoe. At all times Zoe was courteous, calm and professional. I asked her to call…

Read more

Posted on Google

Elisabeth Underdown

Star Star Star Star Star

1 year ago

We came back from holiday to see a massive mould problem in 2 of our rooms. We checked around but found this company to be best priced, most…

Read more

Posted on Google
Why choose us

Why choose us?

  • Cater to a wide variety of cleaning situations
  • Nationwide coverage, available 24/7
  • Cater to commercial and domestic clients
  • Free survey provided prior to quotation 
  • Emergency response team
  • Offer a bespoke service designed to suit all your needs 
  • All technicians hold professional health and safety qualifications, including BICSc, IOSH, Dewpoint Professional & Safe Contractor 

We’re fully accredited

We place best practise, professional expertise and health and safety at the core of our business. We’re fully compliant with all legal obligations. You can view a list of our accreditations below, or visit our Health & Safety page for more information.

CSCS
BICSc
IOSH
SafeContractor
Dewpoint® Professional Corporate Membership
IPAF
NACSC
0208 066 0360Open 24/7
Close

We use cookies

If you continue without changing your settings we'll assume you're happy to receive our cookies.
If you'd like to change this just update your browser settings. Find out more.

Okay. I got it.