Loft Insulation — The Easiest Way to Cut Your Energy Bills
Up to 25% of your home's heat escapes through the roof. Loft insulation is one of the most cost-effective energy improvements you can make, paying for itself in under a year.
With electricity prices at 24.67p/kWh and gas at 6.76p/kWh under the current price cap, a poorly insulated loft in an average UK home wastes hundreds of pounds every year. Around 25% of heat in an uninsulated home escapes through the roof, making loft insulation one of the single most impactful steps you can take to reduce your energy bills. For many households already stretched by the cost of living crisis, this simple upgrade can deliver meaningful savings from day one.
Potential annual saving
Typical installation cost
Average payback period
Heat loss prevented
What Is Loft?
Loft insulation involves laying insulating material between and over the joists in your loft space to prevent heat from escaping through the roof. It is one of the simplest and most affordable energy efficiency measures available. Most installations use mineral wool rolls (such as glass wool or rock wool) laid to a depth of at least 270mm, in line with current Building Regulations.
How It Works
Free Survey
A qualified surveyor visits your home to assess your loft space, check existing insulation depth, and identify any issues such as damp or ventilation concerns.
Preparation
The loft is cleared of any obstructions. Pipes and water tanks are lagged if necessary, and ventilation paths are kept clear to prevent condensation.
Installation
Insulation material is laid between the joists, then a second layer is placed across the joists at right angles to achieve the recommended 270mm depth.
Enjoy Savings
Your home immediately retains more heat, reducing the workload on your boiler and lowering your energy bills from the very first day.
Is It Right for My Home?
Loft insulation is suitable for most homes with an accessible loft space. It works best in properties with less than 100mm of existing insulation. Homes with flat roofs, loft conversions, or rooms built into the roof space may require alternative insulation methods such as rafter insulation. Properties with damp or condensation issues in the loft should have these resolved before installation.
Key Benefits
Slash Energy Bills
Save up to £580 per year on heating costs by preventing heat from escaping through your roof.
Quick Payback
With costs as low as £300, loft insulation can pay for itself in less than a year — one of the fastest returns of any home improvement.
Warmer Home
Your home stays warmer for longer, with more even temperatures across rooms and fewer cold spots.
Reduce Carbon Footprint
Lowering your heating demand reduces carbon emissions, helping the UK meet its net zero targets.
Quick Installation
Most loft insulation jobs take just two to three hours to complete, with minimal disruption to your daily routine.
Boost Property Value
Improving your EPC rating through loft insulation can increase your home's value and appeal to buyers.
Get Your Free Loft Quote
Cost Breakdown
Our partner network means you'll typically pay less than these averages.
| Property Type | Typical Cost | Annual Saving | Payback |
|---|---|---|---|
| Detached | £500 – £600 | £580 | Under 1 year |
| Semi-Detached | £350 – £450 | £355 | Around 1 year |
| Terraced | £300 – £400 | £250 | 1–2 years |
| Bungalow | £400 – £550 | £440 | Around 1 year |
Government Grants Available
ECO4
The Energy Company Obligation scheme funds loft insulation for low-income households and those on qualifying benefits. Fully funded installations are available for eligible homes.
Check Eligibility →Warm Homes Plan
The government's Warm Homes Plan provides grants for insulation measures to fuel-poor households, helping reduce energy bills and improve home comfort.
Check Eligibility →Frequently Asked Questions
Ready to Save with Loft?
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