SuperQuilt multifoil insulation
A/A+ fire ratedWhere a Sudbury loft has already been converted, insulation has to follow the rafters rather than the floor. SuperQuilt does that in 40mm instead of the 200mm-plus a wool build-up would need.
North West London loft specialists
Loft insulation in Sudbury
Sudbury sits in North West London, where the housing is dominated by Victorian and Edwardian terraces close in, and mile after mile of interwar semi-detached and detached suburbia further out. Much of it was insulated to a standard that has since been superseded twice over. We put that right — properly, in a day, for a price agreed in advance.
Free survey in Sudbury
Fixed written price
No call-out charge
Why it matters
The case for insulating your Sudbury loft
25%of a home's heat is lost through an uninsulated roof
1 in 5UK lofts are under-insulated or have the wrong material
270mmthe depth current building regulations recommend
90%less radiant heat loss with SuperQuilt multifoil
Those figures are national, but the logic is entirely local: the roof over a Sudbury house is the cheapest part of it to improve, and the part losing the most.
Sudbury's homes
Older Sudbury homes, modern standards
Sudbury's housing stock largely dates from the 1890s through the 1930s, and the roofs above it are typically generous pitched roofs on the interwar stock, many with hipped ends and a central water tank. Very little of it was built with any insulation at all; what is there now was added later, and its condition depends entirely on who added it and when.
Retrofitted insulation ages in predictable ways. Mineral wool settles and compresses under its own weight over decades. Anything that has been walked on, stored on or boarded over is thinner than it was. Material that has been repeatedly damp has lost most of its value. And the very oldest loose-fill products are often best removed entirely rather than topped over.
A specific local factor: the interwar semis typically have large, square, walkable lofts — the best candidates in London for boarding as proper storage. We look for that on every Sudbury survey.
Our services in Sudbury
Five ways we keep Sudbury homes warm
Every one of these begins with the same free survey and ends with a fixed price agreed before anything starts.
Loft insulation installation
270mm depthMineral wool cross-laid to the 270mm depth current regulations recommend. For most Sudbury homes this is the single highest-value thing you can do to the building.
Loft boarding
Storage-readyBoards laid straight onto joists crush 270mm into 100mm. We batten out instead, so Sudbury homeowners get usable storage and keep the insulation they paid for.
Loft ladders
Fitted in a dayFixed, stable access instead of a stepladder on the landing. Timber, aluminium or concertina, chosen to suit the space your Sudbury home actually has.
Loft makeovers
All-in-oneInsulation, boarding, lighting and a ladder handled together in one visit — cheaper and better sequenced than buying the four separately.
Not sure what your Sudbury loft needs?
Describe the property and what is bothering you about it, and we will recommend the right combination — or tell you that nothing needs doing.
Where we work
Covering Sudbury and the surrounding area
We are in and around Sudbury most weeks, and the same teams cover Harrow and South Harrow. Coverage across North West London is continuous rather than patchy, so a postcode on the boundary is not a problem.
In the loft
Loft work in and around Sudbury
Examples of the work we carry out across the area — insulation, boarding, access and full makeovers.
Questions & answers
Sudbury loft insulation — common questions
Will this improve my EPC rating?
Usually, and often noticeably. Loft insulation depth is recorded directly by the assessor, so increasing it from 100mm to 270mm generally moves the rating. We hand over product documentation and declared performance figures so your assessor records what is actually there.
Do you remove the old insulation?
Where it can stay, it stays and we top over it. Where it cannot, it goes and the disposal is included in the fixed price. You will never find out about removal costs mid-job — that is decided at survey.
Will insulating my loft cause damp?
Correctly installed, no. The risk comes from packing material hard into the eaves and sealing off the airflow the roof depends on. We stop the insulation short and use eaves trays where the pitch requires them.
Do you offer free surveys in Sudbury?
Always, and there is no charge or obligation attached. A survey takes around half an hour. We would rather spend it establishing what your Sudbury loft actually needs than quote blind and revise the price later.
What insulation depth do you fit?
Full recommended depth of 270mm as standard. Going deeper gives sharply diminishing returns; stopping short leaves money on the table every winter. For sloping ceilings in Sudbury loft rooms, multifoil at around 40mm is the practical alternative.
Can I still use my Sudbury loft for storage afterwards?
Yes, provided the boarding is raised. Screwing boards straight onto 100mm joists over 270mm of wool compresses it to a third of its depth and throws away most of what you paid for. We fit raised boarding on battens so the insulation stays at full depth underneath.
What homeowners say
Reviews from Sudbury customers
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Worth reading before you book
How much does loft insulation cost in London? — one of our guides, written by the surveyors who assess lofts across Sudbury and the rest of the capital every week. You can also browse all of our advice guides or read the general FAQ.
Written and fact-checked by the Loft Insulation London survey team, who assess loft spaces across the capital every working week. Last reviewed .
Ready for a warmer Sudbury home?
Half an hour with a tape measure is all it takes to find out where your Sudbury home is losing heat — and there is no charge for it.