Loft & Insulation Services
Roof insulation, loft insulation and loft boarding across Kent, Sussex and Surrey.
About Our Loft & Insulation Services
Up to a quarter of a home’s heat is lost through an uninsulated or poorly insulated roof. Upgrading your loft insulation is one of the most cost-effective energy improvements you can make — it pays for itself within a few years through reduced heating bills and keeps your home warmer in winter and cooler in summer. Building regulations now require minimum insulation levels for any roof work, and bringing your property up to standard is a straightforward job when carried out alongside other roofing projects.
Radiant Roofing provides loft insulation, roof insulation and loft boarding services across the South East. Whether you need your existing insulation topped up, a complete loft insulation installation or a boarded loft floor for safe, usable storage space, our team delivers clean, efficient results with minimal disruption to your daily routine.
If your home feels draughty, your heating bills are higher than expected or you simply want to make better use of your loft space, contact us for a free assessment. We will check your current insulation levels, advise on the most effective upgrade and provide a clear, written quotation.
Our Loft & Insulation Services
Loft Insulation
Mineral wool or rigid board insulation installed between and over ceiling joists to bring your loft up to current building regulation standards. We also clear and dispose of old, damaged insulation where needed.
Learn more →
Roof Insulation
Insulation fitted at rafter level for loft conversions and habitable roof spaces. We install rigid board or breathable insulation between and below rafters to achieve required U-values.
Learn more →
Loft Boarding
Raised loft boarding installed above insulation to create safe, usable storage space without compressing your insulation. We fit loft legs and moisture-resistant chipboard for a sturdy, level floor.
Learn more →Insulation Types We Install
We work with all common insulation materials suitable for domestic loft and roof applications. The right choice depends on your property, the type of installation and your performance requirements.
Mineral Wool
The most widely used loft insulation in the UK. Mineral wool rolls are laid between and over ceiling joists to create a continuous thermal blanket. Cost-effective and straightforward to install.
Key Benefits
- Achieves current building regulation standards at 270mm total depth
- Excellent thermal and acoustic insulation properties
- Non-combustible with good fire resistance
- Cost-effective with a rapid payback period
Why Choose Radiant Roofing?
Roofing & Insulation Combined
As a roofing company, we can combine insulation work with re-roofing, loft conversions and other roof projects. This saves you money and ensures the insulation is installed correctly as part of the wider build.
Building Regulation Compliance
We ensure all insulation work meets current building regulation requirements for thermal performance. Whether it is a straightforward top-up or a full rafter-level installation, we achieve the required U-values.
Clean, Careful Work
Loft work can be messy. We protect your ceilings, lay dust sheets on landing areas and remove all waste on completion. Our team works carefully in confined spaces to avoid damage to ceilings, wiring and plumbing.
Honest Advice
We will tell you if your existing insulation is adequate, if a top-up is all you need or if a full replacement is worthwhile. We never recommend unnecessary work — just practical improvements that deliver real energy savings.
View Our Work
A selection of recent projects from across our services.
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
A standard loft insulation top-up for a typical three-bedroom house costs between £300 and £600. A full installation including removal of old insulation costs between £500 and £1,200. Loft boarding adds approximately £30 to £50 per square metre depending on the system used. We provide free, written quotations with no hidden charges.
According to industry estimates, insulating a previously uninsulated loft can save around £200 to £300 per year on heating bills for a typical semi-detached house. Even topping up from 100mm to the current recommended 270mm can save £50 to £100 per year. The investment typically pays for itself within two to four years.
A straightforward insulation top-up typically takes half a day. A full installation with old insulation removal takes a full day. Adding loft boarding to the project adds approximately half a day to a day depending on the area covered. We always confirm the expected timeline before work begins.
Yes — this is exactly what our loft boarding service provides. We use raised loft legs that lift the boarding above the insulation, maintaining its full thickness and thermal performance. Compressing insulation by boarding directly onto it significantly reduces its effectiveness, so raised boarding is the only approach we recommend.
We cover the whole of Kent, Sussex and Surrey, including Tunbridge Wells, Sevenoaks, Tonbridge, Maidstone, Crawley, East Grinstead, Haywards Heath, Reigate and the surrounding areas. If you are unsure whether we cover your location, give us a call and we will be happy to confirm.
Ready to Get Started?
Whether it's a repair, replacement, or a brand new roof — get in touch today for a free, no-obligation quote.
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