
SuperQuilt multifoil insulation
A/A+ fire ratedMultifoil earns its place in Brondesbury roofs where depth is the binding constraint — period timbers, low headroom, or a conversion already boarded out.
North West London loft specialists
If your Brondesbury loft has 100mm of flattened wool and a boarded patch balanced on the joists, you are not alone and you are losing money every winter. We fit insulation to the recommended 270mm depth, and raise any boarding clear so it keeps working.

Why it matters
Those figures are national, but the logic is entirely local: the roof over a Brondesbury house is the cheapest part of it to improve, and the part losing the most.
Brondesbury's homes
Brondesbury'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 Brondesbury survey.
Our services in Brondesbury
Every one of these begins with the same free survey and ends with a fixed price agreed before anything starts.

Multifoil earns its place in Brondesbury roofs where depth is the binding constraint — period timbers, low headroom, or a conversion already boarded out.

Mineral wool cross-laid to the 270mm depth current regulations recommend. For most Brondesbury homes this is the single highest-value thing you can do to the building.

A squared, edged deck reached from the hatch, with the eaves left open so the roof keeps breathing. Sized to what you will actually use rather than the whole Brondesbury footprint.

The thing that turns a loft you avoid into one you use. Grab rails and a boarded landing area where the design allows.

The whole loft dealt with at once, for one fixed price. Most Brondesbury properties are finished within a day.
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
If you are on the edge of Brondesbury — closer to Harrow and Camden, perhaps — you are still inside our working area. The boundaries on this site are for navigation, not for pricing.
In the loft
Examples of the work we carry out across the area — insulation, boarding, access and full makeovers.



Questions & answers
Absolutely. The only wrong way to do it is to board flat onto the joists. We raise the deck on battens or loft legs, board it in tongue-and-groove panels and leave the eaves clear so the roof keeps ventilating.
It is one of the most reliable ways to improve a rating, because depth is a direct input rather than an inferred assumption. How far it moves depends on everything else about the Brondesbury property, but the direction is not in doubt.
Half a day for insulation alone; a full day for a combined job with boarding, lighting and a ladder. Very large Brondesbury lofts or heavy strip-outs occasionally run into a second morning, and we tell you that in advance.
Not if it is done properly. Insulating the floor makes the roof space colder, so moisture condenses more readily — the defence is the ventilation path at the eaves. Blocking it with insulation is what creates damp lofts. We keep it clear on every job. Our ventilation guide explains the mechanism.
We fit ladders alongside insulation and boarding routinely — it is one of the main reasons the combined makeover works out cheaper than booking the elements separately.
270mm of mineral wool, cross-laid — the depth current building regulations guidance points to for a cold loft. Where a Brondesbury property has a room in the roof and depth is constrained, we use 40mm multifoil at rafter level instead.
What homeowners say
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Loft insulation grants and funding — one of our guides, written by the surveyors who assess lofts across Brondesbury 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 .
Half an hour with a tape measure is all it takes to find out where your Brondesbury home is losing heat — and there is no charge for it.