SuperQuilt multifoil insulation
A/A+ fire ratedWhere a Harlesden 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 Harlesden
Whether you are in a period terrace, an interwar semi or something considerably more recent, we specify insulation for the roof it is actually going into. Harlesden homes get a free survey, a fixed price and work carried out to current recommended standards.
Free survey in Harlesden
Fixed written price
No call-out charge
Why it matters
The case for insulating your Harlesden 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
Which is why a free survey is worth half an hour of your time — the measurement itself usually settles whether a Harlesden loft is worth spending anything on.
Harlesden's homes
What we find in Harlesden roof spaces
The roofs over Harlesden are mostly generous pitched roofs on the interwar stock, many with hipped ends and a central water tank, and they were built during the 1890s through the 1930s for a housing market with no expectation of thermal performance. Insulation arrived later, retrofitted into spaces never designed to accommodate it, and the results vary enormously from street to street.
On survey we routinely find the same handful of problems: material compressed to a fraction of its depth by boards laid straight onto the joists, insulation packed hard into the eaves and sealing off the roof's only ventilation path, hatches left as bare uninsulated panels, and recessed downlighters buried under wool. None of these are exotic and all of them are fixable — but they need finding first.
The interwar semis typically have large, square, walkable lofts — the best candidates in london for boarding as proper storage, which is one more reason we measure rather than assume.
Our services in Harlesden
Five ways we keep Harlesden 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 depthThe standard job, done to standard: two layers, the second laid across the joists to kill the cold bridge, eaves left clear. Most Harlesden lofts are finished in half a day.
Loft boarding
Storage-readyTongue-and-groove panels, screwed rather than nailed so they lift again if a cable needs reaching — raised clear of the insulation throughout.
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 Harlesden home actually has.
Loft makeovers
All-in-oneOne team, one survey, one sequence of work. The insulation depth sets the batten height, the batten height sets the ladder landing — which is why doing it piecemeal costs more.
Not sure what your Harlesden 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 Harlesden and the surrounding area
Our Harlesden coverage extends naturally into Willesden and Wembley and the surrounding streets. There is no travel surcharge and no minimum job size within the area.
In the loft
Loft work in and around Harlesden
Examples of the work we carry out across the area — insulation, boarding, access and full makeovers.
Questions & answers
Harlesden loft insulation — common questions
Do you work in the streets around Harlesden?
Yes. Harlesden is well within our regular working area, along with everywhere immediately around it — see the full list of areas.
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?
It depends what is up there. Cross-laying a new layer over sound existing material is both cheaper and perfectly correct. Failed, contaminated or loose-fill material is stripped, bagged and disposed of — slow work, and we show it as its own line on the quote.
Will insulating my loft cause damp?
It can if the ventilation is ignored, which is why we check it before anything comes off the van. If we find an existing condensation problem in a Harlesden loft, we deal with the cause first rather than insulating over it.
Do you offer free surveys in Harlesden?
Always, and there is no charge or obligation attached. A survey takes around half an hour. We would rather spend it establishing what your Harlesden loft actually needs than quote blind and revise the price later.
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.
What homeowners say
Reviews from Harlesden 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 Harlesden 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 Harlesden home?
We will look at your Harlesden loft, measure what is there and tell you honestly whether it needs work. No charge either way.