R'BULL insulates stretch ceilings

The plenum, a volume nobody uses

Between the original ceiling and the stretched fabric, a few centimetres of void remain. That volume serves no purpose while it is open, and it becomes the best place to insulate in the home as soon as it is properly closed.

Why a reflector rather than thick insulation

The height available does not exceed a few centimetres. Thin reflective insulation works on radiation rather than on thickness, which makes it the only family of products compatible with that constraint.

The air gap, which does the work

A reflector on its own does nothing. It is the still air gap in front of it that blocks the exchanges, and that gap has to be closed around its edges to stay still. An open gap becomes a draught.

What that changes with a heating ceiling

The emitter radiates downwards but also upwards. The reflector sends that share back into the room instead of letting it heat the original substrate, which shifts the efficiency of the installation.

What that changes without a heating ceiling

Even with no built-in heating, a closed plenum limits losses towards the loft or the floor above. Many jobs fit the insulation alone, simply because the ceiling was already being renovated.

The question of weight

A roll of R'BULL Pro 13 covers twenty-five square metres for nineteen kilos. That lightness allows fitting in a plenum with no reinforced framework, which is not the case for traditional insulation of the same declared performance.

The product is presented on its data sheet, and the fitting on the page about fitting thin reflective insulation.