Loft insulation installers for homes across the UK
We measure what is in your loft, tell you plainly what it needs, and fit insulation to 270 mm or more with the eaves, tank and wiring dealt with properly.
- Free survey and a fixed written quote
- Guide prices from £495 for a terraced house
- 0% VAT on installed home insulation until 31 March 2027
About 100 mmA top-up across the joists takes it to 270 mm or more.
Start with the depth you have now
Not sure? Choose "Not sure" and we will measure it at the survey.- Free survey, measured not guessed
- Fixed written price before work starts
- England, Wales, Scotland and Northern Ireland
- 0% VAT on home insulation to March 2027
- Photos of every finished loft
What does your loft need?
Every loft job we do, grouped by what it is for. Each one has a guide price and a page explaining how we do it.
Insulate the loft
Loft insulation
Mineral wool laid between and across the joists to 270 to 300 mm.
Loft insulation top-up
An extra layer over older, thinner insulation to reach 270 to 300 mm.
Blown loft insulation
Loose-fill mineral wool blown through a hose into lofts that are hard to roll out.
Sheep's wool and natural loft insulation
Sheep's wool or wood fibre, for breathable older homes or people who prefer natural materials.
Rafter insulation (warm loft)
Rigid boards between the rafters so the loft itself stays warm, for lofts you use.
Room-in-roof insulation
Sloping ceilings, dwarf walls and flat sections of an existing attic room insulated properly.
Boarding, hatches and ladders
Raised loft boarding
Storage boards on loft legs above full-depth insulation, so nothing gets squashed.
Insulated loft hatch
A draught-sealed, insulated hatch to replace a thin board that leaks warm air.
Loft ladder fitting
A folding or sliding ladder fitted to the hatch, often with a new insulated hatch.
Remove and replace
Ventilation and frost protection
Surveys and funding checks
Loft insulation survey
Depth, condition, ventilation, wiring and damp checked, with a written note.
Thermal imaging survey
Infrared images of ceilings and walls to show missing insulation and cold spots.
Loft insulation grants check
A free check of which funding schemes you might qualify for, and who delivers them.
Homes and buildings
Loft insulation for period homes
Breathable insulation and careful handling for Victorian, Edwardian and older lofts.
Loft insulation for flats
Top-floor flats and shared lofts in blocks, with the owners' consent sorted first.
Loft insulation for landlords
Rented houses and HMOs insulated quickly, with photos and paperwork for your records.
Commercial roof void insulation
Offices, shops, schools, churches and halls with pitched roof voids above a ceiling.
Trade and new-build loft insulation
Supply-and-fit loft insulation for builders, developers and roofers, priced per plot.
How we insulate a loft properly
Most insulation problems come from the details. These are the ones we never skip.
Measured before we quote
We check the depth in several places, the joists, the wiring and the tank, so the price fits your loft.
Eaves kept open
Insulation stops short of the eaves and trays hold it back, so the loft can still breathe and stay dry.
Storage without squashing
Boards go on loft legs above the insulation, never straight onto it.
Straight answers on grants
If you could get funded insulation, we tell you before we quote you for it.
Guide prices for a semi-detached house
An average loft with little or no insulation. Your fixed price follows the survey. Prices include VAT where it applies.
Essential
£545 to £945270 mm mineral wool across the loft floor, with the tank jacketed and the pipes lagged
Recommended
£845 to £1,395300 mm mineral wool and an insulated, draught-sealed hatch, with the tank and pipes lagged
Natural fibre
£1,495 to £2,295Sheep's wool to the same performance, plus the insulated hatch and lagging
For comparison, the Energy Saving Trust puts a typical professionally installed loft at about £750 from bare joists. See prices for every home type or work out your own guide price.
Reviews
We only publish reviews from real customers, and we have not collected any yet on this site. After your job we will send you a link to leave one.
What happens after you get in touch
- We call you backWe ask about the loft, the house and what you want from it, and agree a survey time.
- We survey the loftAbout 30 to 45 minutes. We measure, photograph and talk you through it.
- You get a fixed quoteIn writing, with what is included and any VAT shown. No pressure to decide.
- We fit itMost lofts take a day. You get photos of the finished work.
Loft insulation guides
Plain answers, checked October 2026.
- How much does loft insulation cost in 2026?
- How deep should loft insulation be?
- Is loft insulation worth it?
- Which loft insulation: mineral wool, sheep's wool, blown or boards?
- How do you board a loft without squashing the insulation?
- Loft insulation grants in 2026: what is still available?
- Why is there condensation in my loft after insulation?
- Spray foam in your loft: problems, mortgages and removal
Common questions
How much does loft insulation cost?
From bare joists, our guide prices start at about £495 for a terraced house. The Energy Saving Trust puts the typical professionally installed cost at about £750, and about £600 for a top-up. See the prices page for every home type.
How long does loft insulation take?
Most lofts are done in a day. Large lofts, boarding, clearing and removal of old insulation can take longer.
Is the survey free?
Yes, the survey and written quote are free for installation work. Standalone surveys, condensation investigations and thermal imaging are priced on their pages.
How deep should loft insulation be?
At least 270 mm of mineral wool, as recommended by the Energy Saving Trust.
Can I still store things in my loft?
Yes, on raised boarding that sits above the insulation. Boards laid straight on the joists squash it.
Do you offer grants or free insulation?
We quote for privately paid work. If you might qualify for a funded scheme, we tell you first and point you to the official route.
Is there VAT on loft insulation?
Installing insulation in a home is zero-rated until 31 March 2027, then 5%. Boarding, ladders and vents are standard-rated if VAT applies.
Will my loft get damp after insulation?
Not if the eaves stay clear and warm, moist air from the house is kept out. We fit eaves trays and look for air leaks as part of the job.
Areas we cover
All of the UK. Islands and remote addresses are surveyed by arrangement.
England
- Bedfordshire
- Berkshire
- Bristol
- Buckinghamshire
- Cambridgeshire
- Cheshire
- Cornwall
- County Durham
- Cumbria
- Derbyshire
- Devon
- Dorset
- East Riding of Yorkshire
- East Sussex
- Essex
- Gloucestershire
- Greater London
- Greater Manchester
- Hampshire
- Herefordshire
- Hertfordshire
- Isle of Wight
- Kent
- Lancashire
- Leicestershire
- Lincolnshire
- Merseyside
- Norfolk
- North Yorkshire
- Northamptonshire
- Northumberland
- Nottinghamshire
- Oxfordshire
- Rutland
- Shropshire
- Somerset
- South Yorkshire
- Staffordshire
- Suffolk
- Surrey
- Tyne and Wear
- Warwickshire
- West Midlands
- West Sussex
- West Yorkshire
- Wiltshire
- Worcestershire