SuperQuilt multifoil insulation
A/A+ fire ratedAt roughly 40mm, multifoil delivers serious performance without stealing headroom — which is why it is the answer for Deptford homes with a room in the roof or a sloping ceiling.
South East London loft specialists
Loft insulation in Deptford
Our installers work in Deptford and across the wider South East London area every week, which means we know what is behind the hatch before we open it. That familiarity is why our quotes hold and why the job usually takes a day rather than three.
Free survey in Deptford
Fixed written price
No call-out charge
Why it matters
The case for insulating your Deptford 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
For a Deptford homeowner the practical upshot is simple — the loft is the first upgrade worth making and the one most likely to have been done to an outdated standard.
Deptford's homes
Older Deptford homes, modern standards
Deptford's housing stock largely dates from the 1880s through the 1930s, and the roofs above it are typically pitched tile and slate roofs with reasonable head height, and hipped ends on the interwar semis that reduce the usable void. 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: hipped roofs on 1930s semis cut the usable loft area down sharply at the corners, which changes how much of it is worth boarding. We look for that on every Deptford survey.
Our services in Deptford
Five ways we keep Deptford 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 depthTopping up from the 100mm many Deptford houses still have to a full 270mm is the cheapest meaningful energy improvement available to a UK homeowner.
Loft boarding
Storage-readyBoards laid straight onto joists crush 270mm into 100mm. We batten out instead, so Deptford homeowners get usable storage and keep the insulation they paid for.
Loft ladders
Fitted in a dayMany older Deptford hatches are too small for a ladder to swing through safely. We measure at survey and price any enlargement up front rather than on the day.
Loft makeovers
All-in-oneThe whole loft dealt with at once, for one fixed price. Most Deptford properties are finished within a day.
Not sure what your Deptford 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 Deptford and the surrounding area
Greenwich and Camberwell are all covered by the team that works Deptford, which is why we can usually offer a survey slot within the same week rather than the same month.
In the loft
Loft work in and around Deptford
Examples of the work we carry out across the area — insulation, boarding, access and full makeovers.
Questions & answers
Deptford loft insulation — common questions
What insulation depth do you fit?
The recommended 270mm, achieved in two layers: the first between the joists, the second laid across them to eliminate the cold bridge through the timber. Skipping that second cross-lay is one of the most common shortcuts in the trade.
Can I still use my Deptford loft for storage afterwards?
You can, and most Deptford customers do — but the deck has to sit above the insulation, not on it. That is the whole reason raised boarding exists. Tell us at survey stage if storage matters to you, because it changes how the insulation is planned.
Do I need planning permission in Deptford?
Not for insulation, boarding or a ladder. The line falls at conversion — turning the loft into a habitable room — which is a structural job requiring building control sign-off and a different trade entirely.
How long does the work take in a typical Deptford home?
A straightforward insulation job in a three-bedroom Deptford property is a half-day. Larger, cluttered or awkward-access lofts take longer, and stripping out failed material adds time — all of which is established at survey and reflected in the quote.
How much does loft insulation cost in Deptford?
There is no single figure, and anyone offering one for Deptford without seeing the loft is guessing. The largest swing factor is almost always whether the existing material can be topped over or has to be stripped out and disposed of. We survey free of charge and quote a fixed price afterwards.
Can you fit a loft ladder at the same time?
Yes, and it is cheaper done together. The one thing to check is the hatch: many older Deptford openings are too small for a ladder to swing through safely, so enlargement may be needed. We measure at survey and price it up front. See loft ladders.
What homeowners say
Reviews from Deptford customers
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Worth reading before you book
Loft condensation and ventilation — one of our guides, written by the surveyors who assess lofts across Deptford 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 Deptford home?
Half an hour with a tape measure is all it takes to find out where your Deptford home is losing heat — and there is no charge for it.