SuperQuilt multifoil insulation
A/A+ fire ratedA/A+ fire rated and around 40mm thick. For Sidcup properties where deepening the rafters is impractical, this is what makes the numbers work.
South East London loft specialists
Loft insulation in Sidcup
Loft insulation, boarding, ladders and complete makeovers for homes throughout Sidcup. Free survey, fixed written quote, no call-out charge — and an honest answer if your loft turns out not to need anything.
Free survey in Sidcup
Fixed written price
No call-out charge
Why it matters
The case for insulating your Sidcup 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 Sidcup house is the cheapest part of it to improve, and the part losing the most.
Sidcup's homes
Why Sidcup houses lose more heat than they should
Most of Sidcup was built during the 1880s through the 1930s, and its roofs are typically pitched tile and slate roofs with reasonable head height, and hipped ends on the interwar semis that reduce the usable void. Nothing about that construction is defective — these are, for the most part, sound, well-built houses. They were simply designed for a world where heating was cheap and thermal performance was not something anyone measured.
Bolting modern expectations onto that fabric is largely a matter of doing a few things properly rather than doing many things at all. Full-depth insulation at ceiling level, a ventilation path that has not been blocked, a hatch that is sealed rather than left as a hole, and boarding that sits above the wool instead of on top of it. Get those four right and the loft stops being the weak point.
Bear in mind too that hipped roofs on 1930s semis cut the usable loft area down sharply at the corners, which changes how much of it is worth boarding.
Our services in Sidcup
Five ways we keep Sidcup 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 Sidcup homes this is the single highest-value thing you can do to the building.
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 dayThe thing that turns a loft you avoid into one you use. Grab rails and a boarded landing area where the design allows.
Loft makeovers
All-in-oneFor Sidcup homeowners who want the roof space to stop being a problem and start being storage: everything, in a day.
Not sure what your Sidcup 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 Sidcup and the surrounding area
We are in and around Sidcup most weeks, and the same teams cover Welling and Bexleyheath. Coverage across South East London is continuous rather than patchy, so a postcode on the boundary is not a problem.
In the loft
Loft work in and around Sidcup
Examples of the work we carry out across the area — insulation, boarding, access and full makeovers.
Questions & answers
Sidcup loft insulation — common questions
What insulation depth do you fit?
270mm of mineral wool, cross-laid — the depth current building regulations guidance points to for a cold loft. Where a Sidcup property has a room in the roof and depth is constrained, we use 40mm multifoil at rafter level instead.
How long does the work take in a typical Sidcup home?
Half a day for insulation alone; a full day for a combined job with boarding, lighting and a ladder. Very large Sidcup lofts or heavy strip-outs occasionally run into a second morning, and we tell you that in advance.
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.
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.
What homeowners say
Reviews from Sidcup 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 Sidcup 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 Sidcup home?
Half an hour with a tape measure is all it takes to find out where your Sidcup home is losing heat — and there is no charge for it.