SuperQuilt multifoil insulation
A/A+ fire ratedWhere a Balham 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.
South London loft specialists
Loft insulation in Balham
Our installers work in Balham and across the wider South 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 Balham
Fixed written price
No call-out charge
Why it matters
The case for insulating your Balham 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 Balham loft is worth spending anything on.
Balham's homes
The character of Balham roofs
Balham is a good illustration of how South London was built. The stock here runs to dense Victorian terraces and villas, interwar semis and a substantial amount of purpose-built and converted flats, and the roofs are predominantly slate and tile pitched roofs, with many terraces running unbroken for a considerable length. Within a single street you can find a loft you can stand up and walk around in, and one three doors along where the only sensible approach is to work on your knees.
That variation is exactly why we survey before quoting. Two lofts of identical floor area can differ by a substantial margin in price because one has 150mm joists and a wide hatch, and the other has shallow, irregular timbers, a 400mm opening and a cold water tank sitting in the middle of the run.
Locally, subdivision into flats is very common, so ownership of the roof space is worth establishing before work is booked — worth knowing before you compare quotes.
Our services in Balham
Five ways we keep Balham 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 Balham homes this is the single highest-value thing you can do to the building.
Loft boarding
Storage-readyStorage that does not flatten your insulation. We raise the deck on battens so the full depth survives underneath — the version most Balham lofts should have had first time.
Loft ladders
Fitted in a dayMany older Balham 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 Balham properties are finished within a day.
Not sure what your Balham 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 Balham and the surrounding area
We are in and around Balham most weeks, and the same teams cover Brixton and Wandsworth. Coverage across South London is continuous rather than patchy, so a postcode on the boundary is not a problem.
In the loft
Loft work in and around Balham
Examples of the work we carry out across the area — insulation, boarding, access and full makeovers.
Questions & answers
Balham 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.
What happens to the water tank and pipes?
They end up above the new insulation line, in a colder space than before, so they must be lagged. The cold water tank is insulated on its sides and lid but never underneath — the warmth rising from the house is what keeps it from freezing. We handle this as part of the job.
What homeowners say
Reviews from Balham customers
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Worth reading before you book
Loft insulation grants and funding — one of our guides, written by the surveyors who assess lofts across Balham 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 Balham home?
Tell us about your Balham loft and we will arrange a survey, usually within the same week.