Insulation in London (15)

Average cavity wall insulation costs in London are:

• £4,600
  • detached property
• £2,700
  • semi-detached property
• £1,800
  • mid-terrace
• £2,400
  • bungalow
• £950
  • flat
• £30 - £65 per m² for polyurethane foam
• £25 - £30 per m² for glass wool

• Up to £300

  • cavity wall insulation survey

  Cavity wall insulation prices typically depend on the property's size and the insulation type.

Get more detailed advice in our cavity wall insulation cost guide.

Which insulation you choose depends on your budget and the size and type of the area to be insulated.

Popular insulation choices include:

• Mineral wool is durable, non-combustible, aids noise reduction and can be inserted on walls and in lofts

• Glass wool is sustainable, efficient and good at reducing energy bills

• Polystyrene insulation boards can be inserted in most places, reduce heat transfer and improve energy efficiency

• Fibreglass is non-combustible, fire-resistant, and mould/mildew-resistant

• Foil insulation is easy to install onto roof rafters, doesn't take up excess space, reduces heat loss and prevents condensation

  Chat with a professional insulation installer in London for more advice. They can inspect your home and recommend the most suitable solution based on your needs.

Until then, get more insulation advice here.

How you insulate your home depends on the placement of the insulation and its materials.

Loft insulation is popular for reducing heat loss, whereas floor insulation is essential for ground-floor rooms.

Cavity wall or solid wall insulation can cut heating costs and improve home comfort. However, you’ll need to check with an insulation specialist or surveyor, as not all walls are suitable for wall insulation.

Draught proofing is a more DIY-friendly form of insulation; you’ll just need to seal gaps around doors, windows, and other openings.

Chat with local insulation installers to understand what insulation services are available in your area and how much they'll cost.

If you've got the know-how and confidence, you can DIY your loft insulation.

But it depends on the type of insulation you're installing; some are easier to install than others. Rigid board, foil, and blanket insulation are more DIY-friendly insulation materials.

Consider installing a professional insulation installer in London for the best results.

Loft insulation is an incredibly long-lasting home improvement project, lasting as long as 40 years or longer. Of course, how long you get out of your insulation depends on the type, installation location, and quality of the insulation.

However, over the years, the effectiveness of your insulation can diminish.

You can arrange regular inspections and potential top-ups to help maintain your insulations’ performance.

You may be eligible for a government grant to cover the cost of loft insulation.

Schemes available include:

• Great British Insulation Scheme provides free or cheaper insulation to help reduce your home's energy bills

• Energy Company Obligation provides funding to help households improve the energy efficiency of their homes

• Home Upgrade Grant (HUG) is a scheme that includes energy efficiency upgrades and low-carbon heating

  Always check you meet the criteria before applying for any loft insulation grants.

When choosing an insulation installer in London, try our top tips:

Use Checkatrade

A professional search directory like Checkatrade makes finding insulation installers in London easy.

To find an engineer qualified to install insulation, check their credentials and experience on their Checkatrade member profile.

Ready to get started? Look for insulation services in London.

Ask for recommendations

To ensure the efficiency of your loft insulation, hire someone you trust.

One of the best ways to do that is to ask friends, family, and colleagues.

Check if they have a Checkatrade member profile to check their credentials and reviews.

Check online reviews

The internet is an excellent place to find experienced tradespeople.

It can be helpful to see what others think of insulation services in London so you know what to expect when the work begins.

Remember to cross-check your reviews on Checkatrade.

Both forms of insulation can improve your home's comfort and energy efficiency.

Loft insulation reduces heat through the roof. It’s also easy to install, has the potential for DIY installation, and is cost-effective.

Cavity wall insulation effectively reduces heat loss through the walls and helps to battle condensation. However, it can be more expensive and usually requires professional installation.

Which one you choose depends on your personal needs and budget. For tailored advice, speak with a professional insulation engineer.

Professional insulation installation is surprisingly quick. Lost insulation can take just a few hours to install in a three-bedroom semi-detached house.

However, the timeframe for your loft insulation installation varies depending on the size of your loft, ease of access, and any job difficulties.

A professional can tell you how long they expect the job to take before work begins.

Ready to contact insulation professionals in London?

Our quick and easy online search can help you find the best tradespeople in your area. You can also request a quote so our chosen professionals can contact you directly.