Frequently Asked Questions

Want to learn more about how loft insulation or cavity wall insulation works? Curious about the savings that home insulation can give you? Feel free to browse our FAQs, and if you want to check if you’re eligible for free home insulation grants please take our 30 second eligibility test or get in touch with us by calling 0800 368 9938.

Loft Insulation

Can I get free loft insulation?

Thousands of homes in the UK are entitled to some form of loft insulation grant. In many cases, customers get it absolutely free under the Government ECO scheme.

The size of your home insulation grant will depend on where in the UK you live, and if you’re on one of many social benefits like Child Tax Credit, Pension Guarantee Credit, Working Tax credit etc.

Any costs you may have to pay are likely to be a fraction of the cost of buying and installing the materials yourself – saving you time and money. Plus, you’ll have the benefit of cheaper energy bills (over £200 per year) that’ll pay for the insulation many times over.

Take our 30 second check or call today on 0800 368 9938 to see if you’re eligible for an insulation grant today. We’re authorised to access the grants so we’ll do all the admin whilst you relax in your warmer home.

What is loft insulation?

Loft insulation is man-made mineral fibre in a roll form. It gives you cheaper energy bills and a warmer home by trapping up to 25% more of the heat you’re paying for and stopping it from escaping through the roof.

This ‘thermal barrier’ means that BillSaveUK loft insulation will also keep your home warmer in winter and help reduce the impact of higher energy bills.

Often referred to as “Quilt” the material generally used is made from silica sand, creating a wool-type product also known as glass wool. Old style loft insulation was known to be itchy, but modern loft insulation has been re-designed to be soft to touch and virtually non-itchy. Regardless though, it will be delivered into your loft sealed inside a plastic package and our home insulation installers will clean up after themselves to ensure you’re not left with any mess.

How long does loft insulation last?

Providing the loft insulation is left undisturbed, it is maintenance free and should last indefinitely. This means that each year, it’ll save you energy and give you cheaper heating bills.

How do I get loft insulation installed?

Call or email us today to find out the size of your government grant for loft insulation.

We’ll explain the whole process to you and also arrange for an energy saving expert to check your home for suitability for new home insulation. Once that survey has been carried out and if you’ve decided to go ahead with your installation, a member of our Installation Department will contact you to book the work for a time convenient to you. Typically this is within 2 weeks of booking.

Do I need to take everything out of my loft?

You’ll need to make sure that any items stored within the loft space are removed prior to our crews arriving. We may, at our discretion, remove small items such as Christmas trees and suitcases, but our technicians are not able to move either general or large amounts of items.

If you are unsure, please contact us beforehand.

Do I need to provide anything?

No, our installation teams have all the equipment they need, including lights and ladders.

Do I need to remove any boarding?

To make your loft insulation work as effectively as possible, we’ll need any existing boards removed prior to the date of installation.

If you’re unable or do not want to remove the boards but still want to proceed, we will follow the standard industry best practice and lay the insulation over the boards.

How is loft insulation installed?

Our highly trained technician will arrive on the agreed date. They will be wearing our traditional red and blue BillSaveUK uniform and will produce their identification on request.

The loft insulation material is made by industry leaders Knauf, and will be in sealed bags. They’ll be carried into your loft and opened there to prevent any mess elsewhere in your home. The insulation will be laid between and across the joists and insulate your loft hatch.

Please note that once we have finished, the joists will not be visible and for your safety, we recommend that you do not access the loft without the use of crawling boards, and only still if you are aware of the exact position of the joists.

How long does it take to install loft insulation?

The installation of your new loft insulation should take between 1-2 hours to complete.

Is there much mess?

Unlike some other installers, we pride ourselves on making sure there is as little mess and disruption as possible. A small amount of dust may fall from the loft hatch but this will be cleared by the crew and all loft insulation packaging will be removed from your home before we leave.

Will loft insulation save me money?

The Energy Saving Trust (2016) calculate that the average saving per year from installing loft insulation is approximately £240.

Plus it’ll also help make your house feel warmer during cold weather and improve the energy efficiency rating of your home.

Just as importantly, it’ll also help you do your bit for the environment by reducing your carbon footprint by around 990kg of CO2 per year compared to an uninsulated loft.


Cavity Wall Insulation

Can I get free cavity wall insulation?

Tens of thousands of homes in the UK with cavity walls are entitled to some form of free home insulation grant under the government’s latest ECO scheme. It makes energy companies responsible for reducing carbon emissions, or face fines from the government. So the energy companies work with approved installers like BillSaveUK to insulate lofts and cavity walls, and pay us in the form of grants.

You might even be eligible for 100% free cavity wall insulation, depending on where in the UK you live, and other factors like being on particular benefits like Child Tax Credit, Child Benefit, Carer or Disability benefits and Pension Credit. The rules are generous but can be hard to explain in writing, so the best thing to do call now on 0800 368 9938 or contact us for more information.

When you contact us, we’ll check the size of your grant and explain how everything works. You won’t need to apply for it, we’re authorised to access the grants so you don’t need to. If the grant doesn’t fully cover the cost of the work, we’ll give you an indicative price when you call. Please remember that this is often a tiny fraction of the cost of installing insulation, and you won’t be hit with hidden fees afterwards.

The other important thing to bear in mind is that insulating your house walls can save you hundreds of pounds every year on your heating bills, so any contribution you have to make will pay for itself many times over in a short space of time.

Before we book the installation, we’ll send an energy saving expert around to check your house is suitable and finalise the arrangements.

Want to know more? Watch this video of a real-life survey

Do I have to do anything before installation takes place?

The technician will need to gain access to all walls, so he will need to get inside attached garages, lean-to-sheds, conservatories etc. If you have a wall right on a boundary, you may like to mention to your neighbour that the technician will need to go onto their property in order to inject the cavity insulation into your walls.

It’s also a good idea to remove vehicles from the drive and items close to the walls. In return this will give the technician better access for equipment and tools.

Some vibration might be caused by drilling, so you might want to remove ornaments, particularly on external walls, for safety and peace of mind.

Here’s a video of one of our cavity wall insulation teams in action

Does the technician have to come into the house?

The technician needs to undertake checks before and after installing cavity insulation, including any heating appliances, so it is essential that they have access inside the property.

Does installing cavity wall insulation cause any mess?

The drilling outside will create some dust, but our technician will clean up after the installation of your new cavity wall insulation.

Please note that the  nature of our weather can at times hamper the clean up process, but unlike some other installers of cavity wall insulation, we pride ourselves on making sure you’re happy with the work that is carried out on your property.

You can see how our cavity wall insulation teams clear up after themselves in this video about the installation process.

Do I already have cavity wall insulation?

Check the outside of your house for a pattern of drilled holes approx 1 – 2 inches wide and filled with mortar. You might find them under windows and you can see where the brickwork or mortar has been drilled.

This may indicate that some insulation has been installed previously, but does not necessarily mean that the cavities are completely full. We can help if you need a cavity wall insulation top up.

Also, during your survey, we’ll take measurements of your home including a depth gauge and inspection of the cavity to be filled. From these measurements we know the amount of material required to correctly fill your walls.

The technician will record this data and match this against the quantity of insulation used. Our internal office staff operate a 100% check of this data and measure your results before we issue your 25 year guarantee.

We also carry out spot checks of installations to ensure the high quality that we’re known for.

Here’s a video showing how the pre-installation survey works

What about the ventilators that are in the external wall?

The technician will investigate them to check they are sleeved. If they are not, the technician will remove them and seal around them to stop them being blocked by the wall insulation. Other vents, which may be redundant, such as cavity vents or vents that are in bedrooms may be closed off.

The technician should discuss these with you, so if you have any questions please ask.

What about filling the holes caused by drilling?

After injecting the blown mineral fibre cavity wall insulation, the technician will fill all the injection holes with mortar that closely matches the existing colour and texture.

Don’t worry if the new mortar colour doesn’t match the original straight away. On some older properties or weathered facades it may take several months for the newness of the mortar to blend.

On pebbledash finishes, they will apply pebbles to the surface to match the existing finish as closely as possible.

What will you do about painted areas on my external walls?

We will fill any holes but we will not normally paint over them because, even if the original paint is used, it may not match due to natural weathering that has occurred since it was last painted.

When will I receive the guarantee?

BillSaveUK will carry out the cavity wall insulation guarantee application on your behalf and send it to you. Please note it can take up to 8 weeks.

Will cavity wall insulation make my house feel warmer?

Cavity wall insulation dramatically reduces heat loss through the insulated wall therefore you will be able to achieve the same temperature in your home by turning your thermostat down by a little.

Independent research also shows that it can also save you up to £275 a year on your energy bills (Source: Energy Savings Trust 2016)

Plus, it can make your house feel cooler in the summer as the insulated cavity will prevent some of the suns heat from entering the walls.

What should I do if I want to talk to you after the installation?

Most questions or concerns about insulating your house walls can be resolved swiftly and efficiently, so feel free to speak to a member of our customer services team.

How long will the cavity wall insulation last?

Your new cavity wall insulation is maintenance free and will last for the lifetime of your home.

This means even if you don’t get 100% free cavity insulation, you can be sure it could save you thousands of pounds off your heating bills.