2 for 1 insulation with FREE home delivery!
Without loft insulation you could be losing as much as 15%* of your heating costs through your roof unnecessarily. If you currently have no insulation and install the recommended depth (270mm) you could save around £150* a year on your heating bills! Or if you already have some insulation, why not top it up to 270mm and feel even more warm and toasty?
Can YOU do it yourself?
We’ve got together with Build Center and Rockwool to bring you a hassle-free way to buy DIY loft insulation:
- GREAT PRICES - Compare our 2 for the price of 1 promotional offer^ to DIY stores and you'll see that npower DIY insulation makes sense.
- FREE DELIVERY - Order online and delivery to your door will be included as part of the 2 for 1 offer
- QUALITY MATERIALS - Rockwool insulation is a sustainable product that delivers effective thermal performance
- SAFETY KIT INCLUDED - Safety goggles, safety mask, gloves and Installation Guide (which you can also read below) supplied and delivered with your insulation
For advice on installation download the Rockwool guide here
Buy online or get a free quote
Simply click on the calculator button and you will be taken to our page on Build Center's website to buy online or get a free quote.
Or call Build Center about npower DIY on 0845 270 8250
What will loft insulation cost?
Rockwool offer two thicknesses of insulation – our calculator will help you work out how many rolls you’ll need of each thickness.
| Depth of roll (mm) | Area of roll (m 2 ) | Price per roll | Price per m 2 |
|---|---|---|---|
| 100 | 5.76 | £9.18 | £0.80 |
| 170 | 3.36 | £12.02 | £1.79 |
Prices above are inclusive of VAT at the standard rate and are subject to change by Build Center.
See how quickly loft insulation pays for itself.
3 Bed Semi Detached House Typical Example†
(Standard pricing)
With no existing insulation
| 100mm rolls needed | 170mm rolls needed | Total Cost | Annual Saving | Payback |
|---|---|---|---|---|
| 8 | 14 | £119 | £150 | 10 months |
With 100 mm insulation existing – Top up to 270mm
| 100mm rolls needed | 170mm rolls needed | Total Cost | Annual Saving | Payback |
|---|---|---|---|---|
| 0 | 14 | £84 | £22 | 46 months |
† Prices based on 44m2 loft area. Energy Savings calculated by the Energy Savings Trust, November 2009
For DIY use only. This product is subsidised under the Carbon Emissions Reduction Target and is intended for insulating existing homes. It is not intended for use in new buildings or extensions. Further subsidies cannot be claimed by professional installers on this product. Purchases are limited to 100m2 coverage per household.
Prefer to collect?
If you don’t want to buy online you can go visit the Build Center website and use their useful branch finder tool and bring home your great value insulation yourself.
Branch finder tool
Don’t fancy doing it yourself?
If you don't want to do it yourself, then you can have your loft insulation installed by a professional, for more information visit the npower home insulation page.
npower home insulation
