Loft Insulation
Mineral wool or rigid board insulation installed to current standards — cutting heat loss and energy bills.
- Meets current Building Regulations (270mm+)
- Mineral wool and rigid board options
- Fixed pricing with no hidden extras
Up to 25% of Your Heat Escapes Through the Roof
An uninsulated or poorly insulated loft is one of the biggest sources of heat loss in a typical UK home. Warm air rises, passes through the ceiling and escapes through the roof — wasting energy and pushing up your heating bills. Older properties often have little or no loft insulation, while many homes built before 2000 have insulation well below current standards.
Radiant Roofing installs loft insulation across Kent, Sussex and Surrey. We lay mineral wool or rigid insulation boards between and over ceiling joists to bring your loft up to the current Building Regulation standard of 270mm. We also remove old, damaged or contaminated insulation where needed and ensure ventilation is maintained throughout the roof space.
How It Works
Loft Assessment
We inspect your loft, measure existing insulation depth and check for any issues — damp, ventilation, wiring, pipes — that need addressing first.
Fixed Quote
You receive a clear quote covering insulation supply, installation and any preparatory work — no hidden charges.
Insulation Installation
We lay insulation between and over joists to achieve the required depth, ensuring even coverage with no gaps, compressions or missed areas.
Guarantee
All insulation work is backed by our workmanship guarantee. Properly installed loft insulation lasts the life of the property.
Loft Assessment
We inspect your loft, measure existing insulation depth and check for any issues — damp, ventilation, wiring, pipes — that need addressing first.
Fixed Quote
You receive a clear quote covering insulation supply, installation and any preparatory work — no hidden charges.
Insulation Installation
We lay insulation between and over joists to achieve the required depth, ensuring even coverage with no gaps, compressions or missed areas.
Guarantee
All insulation work is backed by our workmanship guarantee. Properly installed loft insulation lasts the life of the property.
What Our Loft Insulation Service Includes
We install loft insulation in all types of property, from Victorian terraces to modern estates. Every installation meets current Building Regulations for thermal performance.
What Does Loft Insulation Cost?
Typical price range
£300 – £1500
VAT may apply depending on the project
Factors that affect the price:
- 1Loft area (measured in square metres)
- 2Existing insulation depth (top-up vs full install)
- 3Insulation type (mineral wool or rigid board)
- 4Whether old insulation needs removing first
Topping up existing insulation to 270mm typically costs £300 to £600. A full loft insulation installation in a previously uninsulated loft runs £600 to £1,500. We provide a fixed quote after inspecting your loft.
What Our Customers Say
Verified Google ReviewsJane S.
Kent
They were very friendly, professional and polite and left the site immaculate at the end of the day. I would thoroughly recommend them to others. The work was carried out to a very high standard.
Peter B.
East Sussex
Excellent work, highly recommended! Very knowledgeable, by far the best roofing company we have ever used and super nice guys.
Sarah M.
Surrey
Radiant Roofing completed our roof repair quickly and professionally. Great communication throughout and a fantastic result.
Frequently Asked Questions
Loft insulation typically costs between £300 and £1,500. Topping up existing insulation to 270mm costs £300 to £600 for a standard house. A full installation in an uninsulated loft costs £600 to £1,500 depending on loft size and insulation type.
Current Building Regulations recommend 270mm of mineral wool insulation in a loft. Many older properties have 100mm or less. Topping up to 270mm makes a significant difference to heat retention and energy bills. We measure your existing depth and advise on the best approach.
Yes. The Energy Saving Trust estimates that insulating an uninsulated loft can save around £250 to £400 per year on heating bills. Even topping up from 120mm to 270mm can save £25 to £50 per year. The insulation typically pays for itself within two to five years.
We cover Kent, East Sussex, West Sussex and Surrey. Our teams regularly install loft insulation in Tunbridge Wells, Crowborough, Sevenoaks, Tonbridge, Uckfield, Haywards Heath, East Grinstead and surrounding areas.
Yes. All loft insulation installations are backed by our workmanship guarantee. Properly installed insulation requires no maintenance and lasts the lifetime of the property.
Contact Us!
Get in touch with us!
Looking for a free quote? Just fill in the form below, and we'll take care of the rest!
Contact Information:
Mobile (24/7): 07753 165 005
Landline (Office Hours): 01892 356 967
Email: contact@radiantroofing.co.uk
Head Office:
Address:
Alpha House
Crowborough Hill
Crowborough
TN6 2EG
Opening Hours:
Monday to Friday: 7:30 am – 6:00 pm
Saturday: 7:30 am – 12:00 pm
Sunday: Closed (mobile still available)
Our Mobile and Email is available 24/7
