Products we use
Actis Hybris Insulation
Hybrid reflective insulation, for roofs without the depth for mineral wool
Where a roof is insulated at rafter level and there is not the space for a deep layer of mineral wool, a hybrid reflective system is often the sensible answer. This page explains what Hybris is and when we specify it.
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Actis has been making insulation for around thirty five years, and designs products for roofs, walls, lofts and floors. Hybris is its hybrid reflective range, built as a system rather than a single roll, and intended to be workable on both refurbishment jobs and new build.
Hybrid reflective means the panel combines an insulating core with reflective facings, so it is doing two jobs at once in a thinner build-up than mineral wool of the same intent. That is the whole reason it exists, and the reason we reach for it in particular situations rather than as a default.
Where we use it
Rooms in the roof and tight rafters
A cold loft, where the insulation sits on the ceiling and the roof space above stays unheated, is straightforward: mineral wool at depth does the job and costs less. Hybris is not for that.
It comes into its own where the roof is insulated at the slope rather than the ceiling. A converted loft, a room in the roof, a vaulted or sloping ceiling, or a dormer, where the rafters are only so deep and you cannot simply add more thickness without losing head height or boxing the room in. In those situations a thinner build-up that still performs is worth paying for.
It is specified case by case. The rafter depth, the ventilation path behind the insulation and what the roof covering is doing all feed into it, which is why this is a survey decision rather than something to settle over the phone.
A note on claims
What we will and will not say
Reflective and multifoil insulation attracts a lot of bold marketing. We would rather not add to it. What we will say is that Hybris is a recognised product from a long-established manufacturer, that it suits roofs where depth is the constraint, and that the right specification depends on your roof.
For the more common loft situation, see Knauf Insulation Loft Roll, or the loft insulation guides in our knowledge centre.
Free no-obligation survey
Roof insulated
at the slope?
We survey the rafter depth and the ventilation, then quote what actually fits. Call, email, or fill out the contact form.
