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Roof Insulation

Roof insulation is the single most effective way to reduce your home’s energy consumption and save you money on your energy bills. Trust Grant Store to insulate your home, workplace, or local authority buildings and reap almost instant financial and ecological benefits

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  • We’re with you all the way, from lead to aftercare
  • Expert advisors and approved installers
  • Nationwide coverage with 50 years of experience
loft insulation

Our innovative loft insulation solutions

Did you know that the average home loses 25% of its heat through the roof? By installing new loft insulation, you can make your home more energy efficient and save up to £400 on your annual heating bills. We use state-of-the-art insulating technology and include as many eco-friendly materials in our loft insulation projects as possible to make your property warmer and reduce your carbon footprint.

Our team has over 50 years of experience in advising homeowners, business owners, and local councils on the best possible way to make their buildings more energy efficient, so speak to them to get a highly competitive quote for insulation installation today.

roof insulation

How does installing new insulation work?

Here’s how the process works:

  • The loft space will need to be cleared and any obstacles removed
  • We’ll then measure the loft space and calculate how much insulation is needed
  • Based on our findings, we’ll recommend the most effective insulation
  • We’ll install the insulation between the joists or rafters and seal any gaps or air leaks

Hit the button below to get a competitive quote or advice on the best loft insulation solution for your building.

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How much could you save?

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This field is for validation purposes and should be left unchanged.

  • We’re with you all the way, from lead to aftercare
  • Expert advisors and approved installers
  • Nationwide coverage with 50 years of experience

Why add loft insulation to your home?

The better insulated your home is, the more energy-efficient it’ll be. But that’s not the only reason to add new roof insulation to your home. Here are five other good reasons that will convince you!

Reduces heat loss

Loft insulation can help reduce heat loss by up to a quarter, which can save you money on your energy bills

Warmer in the winter and cooler in the summer

It makes your home more comfortable and energy-efficient and reduces the need for air conditioning

Improved soundproofing

Roof insulation can help improve the soundproofing of your home, making it more peaceful and quiet

Can improve air quality

Loft insulation can reduce the amount of dust and pollutants that enter your home, which is especially beneficial for people with allergies or asthma

Increases the value of your home

A property that’s well insulated is worth more on the open housing market than one that isn’t

Fully Accredited Roof Insulation Installers

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Why come to us for roof insulation?

At Grant Store, we pride ourselves on being the only point of contact you’ll need throughout the whole process, from the initial quote all the way through to your aftercare. With over half a century of experience, fully qualified and regulated installers, and a host of glowing Trustpilot reviews to our name, you can count on us to get the job done right.

How it works

We’ve devised a simple 1, 2, 3 system to make the process of getting loft insulation installed hassle-free.


Tell us about your property

This is just to establish a few basic facts, like its location, size, square footage of the roof area, and heating requirements. It’s also to find out if you’re eligible for generous roof insulation grants, either under the ECO4 scheme, the LA Flex scheme, or the Great British Insulation Scheme.



We’ll perform a comprehensive survey of your property to see how much loft insulation you’ll need and what the best materials for the job are. If you do meet the criteria for a roof insulation grant, we’ll also help you apply for it.



Our professional installers are fully regulated and accredited, so you know you’ll be getting first-class service every step of the way on your new roof insulation journey.


You must have lots of questions. We’ve answered some of the most commonly-asked questions about house insulation and home insulation grants here, but please speak to the team if you have any more.

Is it worth replacing loft insulation?

Whether or not it’s worth replacing loft insulation depends on a number of factors, including the age and condition of your existing insulation, the type of insulation you have, and how high your energy bills are. If you’re unsure, then speak to our team, who’ll give you some neutral advice on what they think the best course of action would be for you.

Roof insulation also perfectly complements other forms of heating technology, such as boilers, central heating systems, heat pumps, and even solar energy installations. Grants are available for all of these products, so speak to us on 01942 918 844 for more information.

What thickness should my loft insulation be?

The recommended thickness of loft insulation in the UK is 270mm. This is the minimum thickness that will meet the current building regulations, but if you want to maximise your energy savings, you may want to consider installing 300mm of insulation.

What is the best loft insulation to use?

The best loft insulation to use depends on a number of factors, including your budget, the type of loft you have, and your personal preferences. However, some of the most popular and effective types of loft insulation include glass wool, rock wool, cellulose, and spray foam.

We’ll help you decide which material we think is best to properly insulate your home and give you the best return on your investment.

Who qualifies for loft insulation grants?

An exhaustive list of qualification requirements for ECO4 loft insulation funding is available on our dedicated ECO4 page. The Great British Insulation Scheme is an offshoot of ECO4, and it’s designed to support low-income and vulnerable households but is also available to those living in homes with an Energy Performance Certificate rating of D-G and within Council Tax bands A-D in England and A-E in Scotland and Wales. Funding is intended to run from around April 2023 until March 2026.

Finally, with LA Flex funding, your eligibility is determined on a person-to-person basis by your local council. We operate nationwide, so speak to our expert team to find out the LA Flex criteria for your local council.