Why multifoil, and why here
The property is a CM2 semi with a small integral garage under the main rear bedroom. Two problems stacked on top of each other: a loft that was technically insulated but doing almost no work, and a garage ceiling that was the only thing between an unheated concrete space and a child's bedroom. Mrs. Parekh's surveyor priced a full quilt replacement, but depth between the rafters was tight and she didn't want to lose usable loft height.
Actis Hybris is a reflective multifoil system that hits a 150mm-equivalent U-value in ~35mm of real depth. That profile let us insulate between the rafters without sacrificing headroom, and the same product worked as a direct-fix application to the garage ceiling plasterboard.
What we installed
Two-day install. Day one: cleared the old compressed quilt, fitted Actis Hybris between every rafter in the main loft with the required 20mm air gap, sealed joins with the manufacturer-spec tape, and dressed the eaves. Day two: battened out the garage ceiling, ran a multifoil layer across the full span, and re-boarded with 12.5mm plasterboard for a flush finish.
No grant paperwork, no scheme eligibility — Mrs. Parekh self-funded the job. We invoiced against a fixed quote agreed at survey.
The outcome
Post-install EPC came back at C 72, up from D 58 — a full band jump driven by the combined loft and garage-ceiling measures. Metered gas use dropped from 18,500 kWh in the prior year to 11,200 kWh over the first 12 months post-install, a 39% reduction. At current unit rates that puts the annual saving at roughly £620.
The bedroom above the garage now holds 18-19°C on the coldest nights, measured with a logged thermometer over the first winter — up from 14-15°C the year before. Mrs. Parekh's daughter has moved back into the room.
“The bedroom above the garage used to be unusable in January — now my daughter actually wants to sleep in there. The team was in and out in two days and left everywhere spotless.”