Cost guide
How much does a Wall insulation cost?
Considering wall insulation for your solid walls? This can make your home much cosier and cut down on energy bills. We will help you understand the likely costs involved. Investing in wall insulation means you are getting a warmer, more energy-efficient home. You are also benefiting from a more comfortable living space all year round.
Typical price
£4,000 to £14,000
What changes the price
Home Size
Larger homes naturally require more materials and labour for insulation, increasing the overall cost.
Insulation Type
External wall insulation is often more expensive than internal options due to scaffolding and finish requirements.
Material Choice
Different insulation materials offer varying levels of thermal performance and come at different price points.
Current Wall Condition
Any necessary repairs to your solid walls before insulating will add to the total project cost.
Finish & Render
The choice of external render or internal plaster finish can significantly impact the final appearance and cost.
Access Difficulty
Homes with tricky access or complex architectural features may incur higher labour costs.
Prices by region
| Region | Low | Typical | High |
|---|---|---|---|
| London | £6,000 | £11,500 | £14,000 |
| South East | £5,500 | £10,500 | £13,000 |
| South West | £5,000 | £9,500 | £12,000 |
| East of England | £5,000 | £9,500 | £12,000 |
| Midlands | £4,500 | £8,500 | £11,000 |
| North West | £4,500 | £8,000 | £10,500 |
| North East and Yorkshire | £4,000 | £7,500 | £10,000 |
| Scotland and Wales | £4,000 | £7,500 | £10,000 |
Questions people ask
Will solid wall insulation really save me money?
Yes, absolutely. By preventing heat from escaping your home, you will notice a significant reduction in your energy bills over time. This makes your home more comfortable too.
How long does wall insulation installation take?
The project length varies greatly depending on your home's size and the chosen insulation type. A typical installation can take anywhere from one to three weeks.
Do I need planning permission for wall insulation?
For external wall insulation, planning permission might be needed, especially in conservation areas or for listed buildings. Internal insulation usually does not need permission.
What is the difference between internal and external wall insulation?
Internal insulation is fitted inside your home and changes room sizes slightly. External insulation is fitted to the outside, maintaining internal space but altering the exterior appearance.
Are there grants available for solid wall insulation?
Government and local authority schemes are often available to help with the cost of energy efficiency improvements. It is always worth checking what is currently on offer in your area.
Will wall insulation affect my property value?
Many experts agree that improving your home's energy efficiency can enhance its market appeal. A warmer, more economical home is often more attractive to potential buyers.