LoftZone commisioned the largest ever survey of UK lofts
LoftZone commissioned the largest ever survey of loft users, interviewing 6,000 householders and asking them how they use their lofts and what they knew about insulation. The survey was undertaken by an independent professional organisation, chosen by The Carbon Trust.
The full survey is available upon request, and here’s the summary: 82% of Houses squash insulation, and most don’t realise this is bad for it.

The survey found out that an enormous 82% of people said they squash their insulation for storage or access purposes, usually by putting boxes directly on top of the insulation or by screwing boards to the joists.
Two-thirds of those who used their loft for storage had boarded it, with 89% saying it was at least half full.
Squashing insulation stops it working (see here) but unfortunately this isn’t well known, as only 26% said they knew squashing insulation was bad for it. Many people thought that squashed insulation worked better, but this is completely wrong.

Loft storage is vital !
The survey also found that 76% of people said that storage in their loft was either “very important” or “essential”.

This is a serious problem as whilst loft insulation works well when it’s not squashed, this doesn’t fit with the needs of householders, who want to use their loft for more than just insulation. Also, many people refuse insulation altogether as they don't want to clear their loft.
That’s why we invented LoftZone StoreFloor, which solves the problem of how to use an insulated loft for storage and access (link to another page on the site).

Squashed insulation wastes the UK one whole power station per year
82% of people squash their loft insulation, which at least halves its effectiveness.

But since 25% of your building’s heat goes out the roof, this means most people aren’t getting the full benefit of their insulation. In fact, adding it up across the whole of the UK, we waste one whole power station because of squashed insulation

The UKs Loft Insulation isn't working as it should.

Building regulations around the world require loft insulation to reduce heating and air conditioning bills.
In the UK the minimum is 270mm (11”) and many houses have more than that.
That’s much higher than your joists, which are typically only 100mm or less.
But our research on loft usage showed that people want to use their lofts for storage and access purposes, and 82% squash the insulation with boxes or boards.

This is against insulation manufacturers’ instructions, because insulation works through the trapped air inside it.
But just how badly does it affect its performance?
We commissioned the National Physical Laboratory (NPL), the premier testing agency in the UK, to test insulation when it was compressed.

The results were worse than anyone thought; if you squash your insulation from 270mm down to a joist height of 100mm then its performance reduces by 50%. If you squash it down to 75mm joists, it loses 60%. So the heat lost at least doubles!
You can see NPL’s coverage of this research in their own press release and download our own review of all the academic literature here. That means that in the vast majority of buildings, loft insulation isn’t working the way it’s meant to.
It’s a national tragedy which means that people’s heating bills are too high and that we are wasting the energy from up to 12 whole power stations each year.
That’s why we developed LoftZone StoreFloor, which solves the problem of how to use an insulated loft for storage and access.

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