Loft Insulation Installation
A first, full loft-floor insulation installation for uninsulated or barely insulated lofts — measured, fitted and finished with the eaves and access left right.
Read about loft insulation installation
National loft insulation specialists
Loft Insulation Installation Across the UK
Arrange a free loft assessment for insulation installation, top-ups, removal, ventilation and raised boarding. We help homeowners find the right solution and arrange work with experienced insulation professionals — with a written quotation before anything begins.
- Free loft assessment
- Experienced professionals
- Written quotation first
- Guarantee up to 5 years
Did you know?
You lose up to 40% of your home’s heat through the roof
A well-insulated loft is one of the most effective ways to keep the heat in and your bills down. Start with your postcode and we’ll review your loft requirements and arrange the right next step — no obligation.
- ✓ Free assessment, no pressure
- ✓ Written recommendation and quotation
- ✓ Experienced insulation professionals
What we do
Loft services for every kind of home
From a first installation to top-ups, removal, boarding, ventilation and moisture work — the right approach depends on your loft.
Loft Insulation Top-Up
Adding to sound existing loft insulation to reach a sensible depth — measured first, combined correctly and finished with the eaves kept clear.
Read about loft insulation top-up
Loft Insulation Removal
Careful removal, bagging and disposal of old, wet or contaminated loft insulation — with cleaning and inspection before anything new goes down.
Read about loft insulation removal
Raised Loft Boarding
Raised boarding systems that give you a usable storage platform without crushing the insulation underneath and destroying its performance.
Read about raised loft boarding
Loft Cleaning
Clearing debris, old materials and contamination from the loft so the space is sound, safe to work in and ready for new insulation.
Read about loft cleaning
Loft Ventilation
Keeping air moving through the loft so moisture escapes and the roof timbers stay dry — eaves ventilation, lap vents and clearing blocked airflow.
Read about loft ventilationInsulation types
Choosing the right material
Different lofts suit different materials. We help you weigh performance, moisture behaviour, sustainability and cost — the final choice depends on an inspection, not the property age alone.
Material
Mineral Wool Insulation
The most widely used loft-floor insulation — glass or rock mineral wool rolls, laid between and across the joists to a suitable depth. Good value, widely available and well understood.
ViewMaterial
Sheep Wool Insulation
A natural loft-floor insulation made from sheep's wool fibres, valued for its breathability and moisture-buffering and often chosen for older and traditional homes.
ViewMaterial
Recycled Plastic Insulation
Loft insulation made from recycled plastic fibres — pleasant to handle, durable and a strong sustainability story, laid much like mineral wool on the loft floor.
ViewMaterial
Multifoil Insulation
Thin, reflective multi-layer insulation fixed at rafter level as part of a warm-roof approach — very different from the soft insulation laid on a loft floor.
ViewProperty guide
Older house? The approach changes.
A Victorian terrace, a 1930s semi and a modern estate home all behave differently in the roof. Our property guide explains what to expect by age and type, and our short tool points you toward a suitable approach.
Pre-1920 Homes
Older homes were built to breathe, and their lofts reward a careful, measured approach rather than a rushed one.
View1920 to 1965 Homes
The terraces and semis of this era are among the most common lofts we work in, and most benefit from a top-up rather than a full replacement.
ViewPost-1965 Homes
Newer homes usually arrive with some insulation already in place, so the real question is whether topping up is worthwhile and how to do it well.
ViewVictorian Terraces
Victorian terraces have compact, awkward lofts and roofs built to breathe, so they reward a patient, well-planned approach.
ViewBenefits
What good loft insulation can do
A well-insulated, well-ventilated loft reduces heat loss, improves comfort and can lower heating demand.
- Up to 40%
- of a home’s heat can be lost through an uninsulated roof Industry guidance
- 270mm
- is the commonly used depth benchmark for wool-based loft installations
- 1–2 days
- is typical for many straightforward projects, depending on the loft
- Up to 5 years
- written guarantee available on eligible installations
Actual savings depend on the property, current insulation, heating system, energy use, installation quality and energy prices. How the figures are worked out.
The science, simply
How insulation works
Insulation slows the transfer of heat through convection, conduction and radiation — keeping warm air in during winter and out during summer.
How it works
Six clear stages, start to finish
No surprises. You always see a written recommendation and quotation before any work is agreed.
- 1
Initial enquiry
You tell us about your property and what you have noticed in the loft. Nothing is committed at this stage.
- 2
Property & loft information
We review the property age, roof type, loft access and any existing insulation, moisture or ventilation concerns.
- 3
Survey or assessment
Where required, a survey or assessment is arranged so measurements and conditions can be checked in person.
- 4
Written recommendation & quotation
You receive a clear written recommendation and quotation setting out the scope, materials, price and any guarantee.
- 5
Installation
Work is completed by The Insulation Company or an approved installation partner, with access protected throughout.
- 6
Completion checks & guarantee
Final checks are carried out, the loft is left clean, and relevant documentation and any guarantee are supplied.
Our work
Genuine loft projects
Real before, during and after photography is the best evidence of good work. We only publish projects with the customer’s permission.
Loft insulation installation Victorian through-terrace house
Loft Insulation Case Study — Chimney Loft Insulation With Portable Work Lighting, Bradford
Emma's front and rear bedrooms, split by a central chimney breast, both cooled quickly. We insulated the 40m² floor on both sides of the chimney to a full 300mm depth.
Bradford
Loft insulation installation Compact 1950s semi-detached house
Loft Insulation Case Study — Compact Loft Insulation Upgrade Around a Hatch, Southampton
Tom noticed condensation on the bedroom windows and rapid overnight heat loss. We gave his compact 31m² loft a full 300mm Knauf glass mineral wool layer, fitted carefully around the hatch and low edge bays.
Southampton
Loft insulation installation Edwardian semi-detached house
Loft Insulation Case Study — Complete Loft Floor Upgrade in a Traditional Brick-Gable Roof, London
Peter's upstairs ran consistently colder than the ground floor even after a heating service. The 46m² loft was almost completely uninsulated, so we installed a full 300mm Knauf glass mineral wool layer from hatch to gable.
London
Before · during · after
How a loft changes through a project
Find loft insulation cover for your area
Enter your postcode to see whether we already have a local page for your area. If not, you can request a free assessment and we’ll confirm coverage before arranging anything.
Ventilation & moisture
Insulation and airflow work together
Adding insulation without considering airflow can trap moisture at the eaves. We look at ventilation and any signs of condensation as part of an assessment — and we’re honest that insulation alone will not fix every damp or mould problem.
Peace of mind
Guarantees you can actually read
We don’t advertise lifetime promises or guaranteed savings. Eligible installations may include a written guarantee of up to five years, with the provider, duration, coverage and exclusions set out clearly before work begins.
How our guarantees workGuarantee of up to five years
Eligible installations may include a written guarantee of up to five years. The provider, duration, coverage and exclusions will be confirmed in your written quotation before work begins. Read how our guarantees work.
Customer feedback
Customer Reviews
Feedback from customers who have used our insulation services.
Rated 5 out of 5
on Google
Very good, prompt and friendly service with an excellent result. Very pleased with the outcome. Well done lads.
Review posted on Google 4 weeks ago
Recommended. Friendly, efficient and did a great job in two very dirty loft spaces. All the waste shifted quickly. Top job. Thanks.
Review posted on Google 6 weeks ago
These guys are the best! Rory and Leo were very kind to me and got it all done in just a day. Thank you.
Review posted on Google 13 weeks ago
Jake and Rory supplied and fitted the insulation in our loft. They did an excellent job and I would recommend them.
Review posted on Google 15 weeks ago
It was refreshing to have two young lads who came in and worked incredibly hard on my loft. They came early and left late to get the job done. The best workers I’ve had in a long time, and I would recommend them 100%.
Review posted on Google 17 weeks ago
Good lads. They were professional throughout, took extra care and left the place spotless. We can already feel the difference with the fresh insulation.
Review posted on Google 23 weeks ago
Advice centre
Practical homeowner guides
Clear, British-English answers to the questions we’re asked most.
Advice
What Happens During a Loft Survey
A loft survey checks depth, condition, moisture and ventilation, then ends in a clear written recommendation. Here is a step-by-step walk through what to expect.
ViewAdvice
Signs Your Loft Insulation Needs Replacing
Damp, mould, pest evidence, compression, unevenness and simple age are the main signs that loft insulation needs replacing rather than topping up. Here is what to look for.
ViewAdvice
How Much Loft Insulation Do I Need?
For wool-based loft-floor insulation, 270mm is the widely used benchmark. Here is where that figure comes from, how to check what you already have, and when more is worth it.
ViewGood to know
Questions homeowners ask us
What does a free loft assessment involve?
We review your property age, roof type, loft access and any existing insulation, then discuss what would suit your loft. Where an in-person survey is needed, we arrange one. You receive a written recommendation and quotation before any work is agreed.
Do you cover my area?
We help homeowners across much of the UK. Use the postcode finder above to see whether we have a local page for your area, or request an assessment and we will confirm coverage before arranging anything.
Who carries out the work?
Depending on the service and location, work may be completed by The Insulation Company or an approved installation partner. The installer, scope, payment arrangements and any guarantee are confirmed in your written quotation.
How much does loft insulation cost?
Cost depends on loft size, access, whether old insulation needs removing, the material chosen and any boarding or ventilation work. Our cost guide explains the factors, and an assessment gives you an accurate written quotation.
Is there a guarantee?
Eligible installations may include a written guarantee of up to five years. The provider, duration, coverage and exclusions are confirmed in your quotation before work begins.
Get a quote
Request your free assessment
Share a few details about your property and loft. We’ll review your requirements and arrange the next step — a written recommendation and quotation before anything is agreed.