
SuperQuilt multifoil insulation
A/A+ fire ratedA/A+ fire rated and around 40mm thick. For Welling properties where deepening the rafters is impractical, this is what makes the numbers work.
South East London loft specialists
If your Welling 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 Welling house is the cheapest part of it to improve, and the part losing the most.
Welling's homes
In a typical Welling property built during the 1880s through the 1930s, the roof accounts for the largest single share of heat loss of any element in the building envelope. Warm air rises, the ceiling is thin, and above it sits a ventilated void at close to outdoor temperature for most of the winter.
The good news is that this is the cheapest part of the fabric to improve, by a long way. Wall insulation is disruptive and expensive. Window replacement is a major capital cost. Loft insulation is a day's work with materials that cost very little relative to what they save, and it needs no permissions of any kind.
The one local caveat: 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 factor that in at survey stage.
Our services in Welling
Every one of these begins with the same free survey and ends with a fixed price agreed before anything starts.

A/A+ fire rated and around 40mm thick. For Welling properties where deepening the rafters is impractical, this is what makes the numbers work.

The standard job, done to standard: two layers, the second laid across the joists to kill the cold bridge, eaves left clear. Most Welling lofts are finished in half a day.

Tongue-and-groove panels, screwed rather than nailed so they lift again if a cable needs reaching — raised clear of the insulation throughout.

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 Welling 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 Welling — closer to Bexleyheath and Elmstead, 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
Price depends on the loft's floor area, the depth and condition of anything already up there, how easy the space is to move around in, and whether old material has to be removed. That is why every Welling quote follows a free survey rather than a phone call. Once given, the price is fixed. Our cost guide sets out each variable.
No. Loft insulation, boarding and loft ladders are all improvement works well outside planning control, in Welling as everywhere else. A loft conversion — creating a habitable room with structural alterations — is different and normally needs building control approval. We do not carry out conversions.
270mm of mineral wool, cross-laid — the depth current building regulations guidance points to for a cold loft. Where a Welling property has a room in the roof and depth is constrained, we use 40mm multifoil at rafter level instead.
Correctly installed, no. The risk comes from packing material hard into the eaves and sealing off the airflow the roof depends on. We stop the insulation short and use eaves trays where the pitch requires them.
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.
Pipes get lagged and the tank gets insulated on the sides and top only. Leaving the base open is deliberate — it is the only thing preventing a frozen tank in a hard winter.
What homeowners say
Placeholder review 1 — paste a real customer quote about your work in Welling here.Customer nameWelling · replace with the review date
Placeholder review 2 — paste a real customer quote about your work in Welling here.Customer nameWelling · replace with the review date
Placeholder review 3 — paste a real customer quote about your work in Welling here.Customer nameWelling · replace with the review date
Placeholder review 4 — paste a real customer quote about your work in Welling here.Customer nameWelling · replace with the review date
Note for the site owner: these four review cards are placeholders. Replace the quotes and names below with real reviews from your Google Business Profile, Checkatrade or Trustpilot before you launch. Review schema has deliberately been left out until the reviews are genuine — marking up invented reviews breaches Google's guidelines.
How much does loft insulation cost in London? — one of our guides, written by the surveyors who assess lofts across Welling 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 .
We will look at your Welling loft, measure what is there and tell you honestly whether it needs work. No charge either way.